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Zheng Q, Wang T, Zhang G, Zhang X, Huang C, Cheng X, Huo L, Cui X, Xu Y. Synergy of Active Sites and Charge Transfer in Branched WO 3/W 18O 49 Heterostructures for Enhanced NO 2 Sensing. ACS Sens 2024; 9:1391-1400. [PMID: 38364864 DOI: 10.1021/acssensors.3c02443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Achieving reliable detection of trace levels of NO2 gas is essential for environmental monitoring and protection of human health protection. Herein, a thin-film gas sensor based on branched WO3/W18O49 heterostructures was fabricated. The optimized WO3/W18O49 sensor exhibited outstanding NO2 sensing properties with an ultrahigh response value (1038) and low detection limit (10 ppb) at 50 °C. Such excellent sensing performance could be ascribed to the synergistic effect of accelerated charge transfer and increased active sites, which is confirmed by electrochemical impedance spectroscopy and temperature-programmed desorption characterization. The sensor exhibited an excellent detection ability to NO2 under different air quality conditions. This work provides an effective strategy for constructing WO3/W18O49 heterostructures for developing NO2 gas sensors with an excellent sensing performance.
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Affiliation(s)
- Qiuyue Zheng
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Tingting Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
- Postdoctoral Workstation of Zhejiang Fomay Technology Co., Ltd., Linhai 317099, Zhejiang, China
| | - Guanyi Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xianfa Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Chaobo Huang
- College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Xiaoli Cheng
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Lihua Huo
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xinlei Cui
- Key Laboratory of Environmental Catalysis and Energy Storage Materials, Suihua University, Suihua 152061, China
| | - Yingming Xu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
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2
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Chen W, Zheng J, Fang Y, Wang Y, Hu J, Zhu Y, Zhu X, Li W, Zhang Q, Pan C, Zhang B, Qiu X, Wang S, Cui S, Wang J, Wu J, Luo Z, Guo Y. Role of the In-Situ-Formed Surface (Pt-S-O)-Ti Active Structure in SO 2-Promoted C 3H 8 Combustion over a Pt/TiO 2 Catalyst. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:3041-3053. [PMID: 38291736 DOI: 10.1021/acs.est.3c08380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Typically, SO2 unavoidably deactivates catalysts in most heterogeneous catalytic oxidations. However, for Pt-based catalysts, SO2 exhibits an extraordinary boosting effect in propane catalytic oxidation, but the promotive mechanism remains contentious. In this study, an in situ-formed tactful (Pt-S-O)-Ti structure was concluded to be a key factor for Pt/TiO2 catalysts with a substantial SO2 tolerance ability. The experiments and theoretical calculations confirm that the high degree of hybridization and orbital coupling between Pt 5d and S 3p orbitals enable more charge transfer from Pt to S species, thus forming the (Pt-S-O)-Ti structure with the oxygen atom dissociated from the chemisorbed O2 adsorbed on oxygen vacancies. The active oxygen atom in the (Pt-S-O)-Ti active structure is a robust site for C3H8 adsorption, leading to a better C3H8 combustion performance. This work can provide insights into the rational design of chemical bonds for high SO2 tolerance catalysts, thereby improving economic and environmental benefits.
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Affiliation(s)
- Wei Chen
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Juan Zheng
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yarong Fang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yutao Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Nanostructure Research Centre, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Jinpeng Hu
- Fujian Longxin 3D Array Technology Co., Ltd., Longyan 364000, P. R. China
| | - Yuhua Zhu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiaoxiao Zhu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Weihao Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Qian Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Chuanqi Pan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Baojian Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiaofeng Qiu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Sibo Wang
- Fujian Longxin 3D Array Technology Co., Ltd., Longyan 364000, P. R. China
| | - Shuang Cui
- Division of Analysis, SINOPEC (Beijing) Research Institute of Chemical Industry, Co. Ltd., Beijing 100013, P. R. China
| | - Jinlong Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
- Wuhan Institute of Photochemistry and Technology, Wuhan 430082, P. R. China
| | - Jinsong Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Nanostructure Research Centre, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Zhu Luo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
- Wuhan Institute of Photochemistry and Technology, Wuhan 430082, P. R. China
| | - Yanbing Guo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
- Wuhan Institute of Photochemistry and Technology, Wuhan 430082, P. R. China
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Yan H, Liu T, Lv Y, Xu X, Xu J, Fang X, Wang X. Doping SnO 2 with metal ions of varying valence states: discerning the importance of active surface oxygen species vs. acid sites for C 3H 8 and CO oxidation. Phys Chem Chem Phys 2024; 26:3950-3962. [PMID: 38250964 DOI: 10.1039/d3cp05840a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
To elucidate the valence state effect of doping cations, Li+, Mg2+, Cr3+, Zr4+ and Nb5+ with radii similar to Sn4+ (CN = 6) were chosen to dope tetragonal SnO2. Cr3+, Zr4+ and Nb5+ can enter the SnO2 lattice to produce solid solutions, thus creating more surface defects. However, Li+ and Mg2+ can only stay on the SnO2 surface as nitrates, thus suppressing the surface defects. The rich surface defects facilitate the generation of active O2-/Oδ- and acid sites on the solid solution catalysts, hence improving the reactivity. On the solid solution catalysts active for propane combustion, several reactive intermediates can be formed, but are negligible on those with low activity. It is confirmed that for propane combustion, surface acid sites play a more vital role than active oxygen sites. Nevertheless, for CO oxidation, the active oxygen sites play a more vital role than the acid sites.
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Affiliation(s)
- Haiming Yan
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, P.R. China.
| | - Teng Liu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, P.R. China.
| | - Yu Lv
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, P.R. China.
| | - Xianglan Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, P.R. China.
| | - Junwei Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, P.R. China.
| | - Xiuzhong Fang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, P.R. China.
| | - Xiang Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, P.R. China.
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Dong C, Mu R, Li R, Wang J, Song T, Qu Z, Fu Q, Bao X. Disentangling Local Interfacial Confinement and Remote Spillover Effects in Oxide-Oxide Interactions. J Am Chem Soc 2023; 145:17056-17065. [PMID: 37493082 DOI: 10.1021/jacs.3c02483] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Supported oxides are widely used in many important catalytic reactions, in which the interaction between the oxide catalyst and oxide support is critical but still remains elusive. Here, we construct a chemically bonded oxide-oxide interface by chemical deposition of Co3O4 onto ZnO powder (Co3O4/ZnO), in which complete reduction of Co3O4 to Co0 has been strongly impeded. It was revealed that the local interfacial confinement effect between Co oxide and the ZnO support helps to maintain a metastable CoOx state in CO2 hydrogenation reaction, producing 93% CO. In contrast, a physically contacted oxide-oxide interface was formed by mechanically mixing Co3O4 and ZnO powders (Co3O4-ZnO), in which reduction of Co3O4 to Co0 was significantly promoted, demonstrating a quick increase of CO2 conversion to 45% and a high selectivity toward CH4 (92%) in the CO2 hydrogenation reaction. This interface effect is ascribed to unusual remote spillover of dissociated hydrogen species from ZnO nanoparticles to the neighboring Co oxide nanoparticles. This work clearly illustrates the equally important but opposite local and remote effects at the oxide-oxide interfaces. The distinct oxide-oxide interactions contribute to many diverse interface phenomena in oxide-oxide catalytic systems.
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Affiliation(s)
- Cui Dong
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Rentao Mu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Rongtan Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianyang Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Tongyuan Song
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhenping Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Qiang Fu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xinhe Bao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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5
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Wang X, Guo N, Peng J, Wang Y, Li H, Ren D, Gui K. Excellent operating temperature window and H 2O/SO 2 resistances of Fe-Ce catalyst modified by different sulfation strategies for NH 3-SCR reaction. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:50635-50648. [PMID: 36797387 DOI: 10.1007/s11356-023-25912-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 02/09/2023] [Indexed: 04/16/2023]
Abstract
Expecting to gain an excellent operating temperature window and superior catalytic activity of the catalyst in SCR reaction, the Fe-Ce bimetallic oxide catalyst was firstly prepared and sulfated with two different sulfation strategies by H2SO4. It is interestingly found that both the two sulfation strategies can significantly broaden the operating temperature window of the catalyst. In particular, the SFC and FCS both exhibit superior resistance to H2O + SO2, and the NOx conversion of the SFC even displays no changes in the coexistence of H2O and SO2. The characterization results show that different sulfation strategies can generate amorphous sulfate species rather than bulk sulfate species. Furthermore, more surface-adsorbed oxygen as well as higher contents of Ce3+ and Fe3+ can be obtained on the sulfated catalysts, especially for the SFC catalyst. Meanwhile, different sulfation strategies will progressively enhance the redox ability and amounts of strong acid sites, which will contribute to broadening the operating temperature window for the NH3-SCR reaction. Additionally, different sulfation methods do not change the reaction pathway of catalysts. However, the adsorption of ad-NH3 species and reactivity of ad-NOx species are significantly changed. These lead to the reaction pathway shifts to E-R direct over the SFC and the promotion of E-R and L-H mechanisms over the FCS catalyst.
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Affiliation(s)
- Xiaobo Wang
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing, 211171, Jiangsu, China.
- College of Chemistry and Materials Science, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu, 241002, Anhui, China.
| | - Ning Guo
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing, 211171, Jiangsu, China
| | - Jiaqi Peng
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing, 211171, Jiangsu, China
| | - Yue Wang
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing, 211171, Jiangsu, China
| | - Haijie Li
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing, 211171, Jiangsu, China
| | - Dongdong Ren
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, Shandong, China
| | - Keting Gui
- School of Energy and Environment, Southeast University, Nanjing, 210096, Jiangsu, China
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6
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Song ZY, Li YY, Duan W, Xiao XY, Gao ZW, Zhao YH, Liang B, Chen SH, Li PH, Yang M, Huang XJ. Decisive role of electronic structure in electroanalysis for sensing materials: Insights from density functional theory. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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7
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Wang Q, Wang Y, Wei L, Wang K, Liu C, Ma D, Liu Q. Promotional mechanism of activity of CeEuMnO ternary oxide for low temperature SCR of NO. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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Wan T, Wang G, Guo Y, Fan X, Zhao J, Zhang X, Qin J, Fang J, Ma J, Long Y. Special direct route for efficient transfer hydrogenation of nitroarenes at room temperature by monatomic Zr tuned α-Fe2O3. J Catal 2022. [DOI: 10.1016/j.jcat.2022.09.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Zou J, Impeng S, Wang F, Lan T, Wang L, Wang P, Zhang D. Compensation or Aggravation: Pb and SO 2 Copoisoning Effects over Ceria-Based Catalysts for NO x Reduction. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:13368-13378. [PMID: 36074097 DOI: 10.1021/acs.est.2c03653] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Severe catalyst deactivation caused by multiple poisons, including heavy metals and SO2, remains an obstinate issue for the selective catalytic reduction (SCR) of NOx by NH3. The copoisoning effects of heavy metals and SO2 are still unclear and irreconcilable. Herein, the unanticipated differential compensated or aggravated Pb and SO2 copoisoning effects over ceria-based catalysts for NOx reduction was originally unraveled. It was demonstrated that Pb and SO2 exhibited a compensated copoisoning effect over the CeO2/TiO2 (CT) catalyst with sole active CeO2 sites but an aggravated copoisoning effect over the CeO2-WO3/TiO2 (CWT) catalyst with dual active CeO2 sites and acidic WO3 sites. Furthermore, it was uniquely revealed that Pb preferred bonding with CeO2 among CT while further being combined with SO2 to form PbSO4 after copoisoning, which released the poisoned active CeO2 sites and rendered the copoisoned CT catalyst a recovered reactivity. In comparison, Pb and SO2 would poison acidic WO3 sites and active CeO2 sites, respectively, resulting in a seriously degraded reactivity of the copoisoned CWT catalyst. Therefore, this work thoroughly illustrates the internal mechanism of differential compensated or aggravated deactivation effects for Pb and SO2 copoisoning over CT and CWT catalysts and provides effective solutions to design ceria-based SCR catalysts with remarkable copoisoning resistance for the coexistence of heavy metals and SO2.
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Affiliation(s)
- Jingjing Zou
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nanoscience and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Sarawoot Impeng
- National Nanotechnology Center, National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Fuli Wang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nanoscience and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Tianwei Lan
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nanoscience and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Lulu Wang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nanoscience and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Penglu Wang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nanoscience and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nanoscience and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
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Chen W, Yang S, Liu H, Huang F, Shao Q, Liu L, Sun J, Sun C, Chen D, Dong L. Single-Atom Ce-Modified α-Fe 2O 3 for Selective Catalytic Reduction of NO with NH 3. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10442-10453. [PMID: 35749227 DOI: 10.1021/acs.est.2c02916] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A single-atom Ce-modified α-Fe2O3 catalyst (Fe0.93Ce0.07Ox catalyst with 7% atomic percentage of Ce) was synthesized by a citric acid-assisted sol-gel method, which exhibited excellent performance for selective catalytic reduction of NOx with NH3 (NH3-SCR) over a wide operating temperature window. Remarkably, it maintained ∼93% NO conversion efficiency for 168 h in the presence of 200 ppm SO2 and 5 vol % H2O at 250 °C. The structural characterizations suggested that the introduction of Ce leads to the generation of local Fe-O-Ce sites in the FeOx matrix. Furthermore, it is critical to maintain the atomic dispersion of the Ce species to maximize the amounts of Fe-O-Ce sites in the Ce-doped FeOx catalyst. The formation of CeO2 nanoparticles due to a high doping amount of Ce species leads to a decline in catalytic performance, indicating a size-dependent catalytic behavior. Density functional theory (DFT) calculation results indicate that the formation of oxygen vacancies in the Fe-O-Ce sites is more favorable than that in the Fe-O-Fe sites in the Ce-free α-Fe2O3 catalyst. The Fe-O-Ce sites can promote the oxidation of NO to NO2 on the Fe0.93Ce0.07Ox catalyst and further facilitate the reduction of NOx by NH3. In addition, the decomposition of NH4HSO4 can occur at lower temperatures on the Fe0.93Ce0.07Ox catalyst containing atomically dispersed Ce species than on the α-Fe2O3 reference catalyst, resulting in the good SO2/H2O resistance ability in the NH3-SCR reaction.
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Affiliation(s)
- Wei Chen
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Shan Yang
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Hao Liu
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Fang Huang
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Qinghao Shao
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Lichen Liu
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Jingfang Sun
- Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing 210093, P. R. China
| | - Chuanzhi Sun
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Dezhan Chen
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Lin Dong
- Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing 210093, P. R. China
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11
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Chen Y, Zhang Y, Feng X, Li J, Liu W, Ren S, Yang J, Liu Q. In situ deposition of 0D CeO 2 quantum dots on Fe 2O 3-containing solid waste NH 3-SCR catalyst: Enhancing redox and NH 3 adsorption ability. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 149:323-332. [PMID: 35772293 DOI: 10.1016/j.wasman.2022.06.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/13/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
As NOx has been turning into a crucial environmental problem, NH3-SCR technology with relatively simple device, reliable operation and low secondary pollution, has become a widely used commercial and mature de-nitration technology. However, some weaknesses restricted the further application of commercialized V2O5-WO3/TiO2 NH3-SCR catalysts, while Fe2O3-based catalysts have received much attention due to their high thermal stability, passable N2 selectivity and low cost. In this study, Fe2O3-containing solid waste derived from Zn extraction process of electric arc furnace dust was exploited as the base material for catalyst preparing. Owing to the complementary and synergistic effect of CeO2 and Fe2O3, 0D CeO2 quantum dots (CeQDs) with fully-exposed active sites, large specific surface area, and rapid charge transfer have been introduced and deposited onto Fe2O3-containing solid waste nanorods. The in-situ deposition of CeQDs led to the admirable enhancement in NH3-SCR catalytic activity, N2 selectivity and SO2 tolerance of the extremely low-cost Fe2O3 catalyst. Comprehensive characterizations and DFT calculations describing the adsorption of O2 and NH3 were applied to analyze the catalyst structure and further investigate the detailed relationship between structural properties and activity as well as reaction mechanism. This work provides new insights for the high-value utilization of iron-containing solid waste and a practical reference for boosting the performance of NH3-SCR catalysts by introducing quantum dots.
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Affiliation(s)
- Yangfan Chen
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
| | - Yuchen Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
| | - Xin Feng
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
| | - Jiangling Li
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgical and New Materials, Chongqing University, Chongqing 400044, PR China.
| | - Weizao Liu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgical and New Materials, Chongqing University, Chongqing 400044, PR China
| | - Shan Ren
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgical and New Materials, Chongqing University, Chongqing 400044, PR China
| | - Jian Yang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgical and New Materials, Chongqing University, Chongqing 400044, PR China
| | - Qingcai Liu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgical and New Materials, Chongqing University, Chongqing 400044, PR China
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12
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Xu S, Yin L, Wang H, Gao L, Tian X, Chen J, Zhang Q, Ning P. Improved Alkali-Tolerance of FeOx-WO3 Catalyst for NO Removal via in situ Reserving FeOx Active Species. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Keller S, Bentrup U, Rabeah J, Brückner A. Impact of dopants on catalysts containing Ce1-xMxO2-δ (M = Fe, Sb or Bi) in NH3-SCR of NOx – A multiple spectroscopic approach. J Catal 2022. [DOI: 10.1016/j.jcat.2021.04.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Liu W, Gao Z, Sun M, Gao J, Wang L, Zhao X, Yang R, Yu L. One-pot synthesis of CrαMnβCeTiOx mixed oxides as NH3-SCR catalysts with enhanced low-temperature catalytic activity and sulfur resistance. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117450] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Zang P, Liu J, Liu X, Zhang G, Chen J, Li J, Zhang Y. Remarkable enhancement in the N 2 selectivity of NH 3-SCR over the CeNb 3Fe 0.3/TiO 2 catalyst in the presence of chlorobenzene. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:19309-19323. [PMID: 34713406 DOI: 10.1007/s11356-021-17116-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
The simultaneous removal of NOx and dioxins is the frontier of environmental catalysis, which is still in the initial stage and poses several challenges. In this study, a series of CeNb3Fex/TiO2 (x = 0, 0.3, 0.6, and 1.0) catalysts were prepared by the sol-gel method and examined for the synergistic removal of NOx and CB. The CeNb3Fe0.3/TiO2 catalyst exhibits an optimum catalytic performance, with an NOx conversion greater than 95% at 260-380 °C. It also exhibits an optimal CB oxidation activity, in which CB promoted both the NOx conversion and N2 selectivity below 250 °C. Moreover, the more favorable ratios of Ce4+ to Ce3+ and plentiful surface-adsorbed oxygen species are the reasons why CeNb3Fe0.3/TiO2 catalyst has better catalytic activity than other catalysts at the lower temperature. Simultaneously, owing to the modulation of Fe to the redox properties of Ce and Nb, the large number of oxygen vacancies and acid sites was generated, and the CeNb3Fe0.3/TiO2 catalyst is beneficial to NOx reduction and CB oxidation. Furthermore, the results of in situ DRIFTS study reveal the NH3-SCR reactions over CeNb3Fe0.3/TiO2 catalysts are mainly conformed to by the L-H mechanism (< 350 °C) and E-R mechanism (> 350 °C), respectively, and the multi-pollutant conversion mechanism in the synergistic reaction was systematically studied.
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Affiliation(s)
- Pengchao Zang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China
| | - Jun Liu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China.
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China.
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, National Engineering, Tsinghua University, Beijing, 100084, People's Republic of China.
| | - Xiaoqing Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, National Engineering, Tsinghua University, Beijing, 100084, People's Republic of China
- School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, People's Republic of China
| | - Guojie Zhang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China.
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China.
| | - Jianjun Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, National Engineering, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, National Engineering, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Yongfa Zhang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, People's Republic of China
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16
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Wang H, Zhu T, Qiao Y, Dong S, Qu Z. Investigation of the promotion effect of Mo doped CuO catalysts for the low-temperature performance of NH3-SCR reaction. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Feng C, Han L, Wang P, Liu X, Zhou G, Zhang D. Unraveling SO 2-tolerant mechanism over Fe 2(SO 4) 3/TiO 2 catalysts for NO x reduction. J Environ Sci (China) 2022; 111:340-350. [PMID: 34949363 DOI: 10.1016/j.jes.2021.04.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/16/2021] [Accepted: 04/16/2021] [Indexed: 06/14/2023]
Abstract
Developing low-temperature SO2-tolerant catalysts for the selective catalytic reduction of NOx is still a challenging task. The sulfation of active metal oxides and deposition of ammonium bisulfate deactivate catalysts, due to the difficult decomposition of the as-formed sulfate species at low temperatures (<300 °C). In recent years, metal sulfate catalysts have attracted increasing attention owing to their good catalytic activity and strong SO2 tolerance at higher temperatures (>300°C); however, the SO2-tolerant mechanism of metal sulfate catalysts is still ambiguous. In this study, Fe2(SO4)3/TiO2 and Ce2(SO4)3/TiO2 catalysts were prepared using the corresponding metal sulfate salt as the precursor. These catalysts were tested for their low-temperature activity and SO2 tolerance activity. Compared to Ce2(SO4)3/TiO2, Fe2(SO4)3/TiO2 showed significantly better low-temperature activity and SO2 tolerance. It was demonstrated that less surface sulfate species formed on Fe2(SO4)3/TiO2 and Ce2(SO4)3/TiO2. However, the presence of NO and O2 could assist the decomposition of NH4HSO4 over Fe2(SO4)3/TiO2 at a lower temperature, endowing Fe2(SO4)3/TiO2 with better low-temperature SO2 tolerance than Ce2(SO4)3/TiO2. This study unraveled the SO2-tolerant mechanism of Fe2(SO4)3/TiO2 at lower temperatures (<300 °C), and a potential strategy is proposed for improving the low-temperature SO2-tolerance of catalysts with Fe2(SO4)3 as the main active component or functional promoter.
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Affiliation(s)
- Chong Feng
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Lupeng Han
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Penglu Wang
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Xiangyu Liu
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Guangyuan Zhou
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China; Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Dengsong Zhang
- State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China.
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18
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Xu Q, Li Z, Wang L, Zhan W, Guo Y, Guo Y. Understand the role of redox property and NO adsorption over MnFeOx for NH3-SCR. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02203b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Widening the operation temperature window of selective catalytic reduction NO by NH3 (NH3-SCR) is a challenge to meet the increasingly stringent emission control regulations of NOx. Hence, MnFeOx with different...
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19
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Ce/Cr and Ce/Co modified ferrite catalysts for high temperature water-gas shift reaction at elevated pressures. J Catal 2022. [DOI: 10.1016/j.jcat.2021.11.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Lu X, Dang Y, Li M, Zhu C, Liu F, Tang W, Weng J, Ruan M, Suib SL, Gao PX. Synergistic promotion of transition metal ion-exchange in TiO 2 nanoarray-based monolithic catalysts for the selective catalytic reduction of NO x with NH 3. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00996j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The improved performance of the multi-component Cu–Ce–Mn/TNA catalysts over the mono-metallic catalysts demonstrated the synergistic promotion of multi-transition-metal-doped nanoarray catalysts for efficient NO abatement.
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Affiliation(s)
- Xingxu Lu
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - Yanliu Dang
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - Meilin Li
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Chunxiang Zhu
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - Fangyuan Liu
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - Wenxiang Tang
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - Junfei Weng
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - Mingyue Ruan
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Steven L. Suib
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Pu-Xian Gao
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
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21
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Cao X, Dai Y, Qin J, Qi X, Qin Y, Chen M, Ma J, Long Y. Ce-Doped α-FeOOH as a High-Performance Catalyst for Atom-Economic Synthesis of Imines: Enhanced Oxygen-Activating Capacity and Acidic Property. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao Cao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Yiwei Dai
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Jiaheng Qin
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Xin Qi
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Yao Qin
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Ming Chen
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Jiantai Ma
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Yu Long
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
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22
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Li Z, Chen J, Jiang M, Li L, Zhang J, Duan W, Wen J, Wang H, Liu M, Zhang Q, Chen J, Ning P. Study on SO2 Poisoning Mechanism of CO Catalytic Oxidation Reaction on Copper–Cerium Catalyst. Catal Letters 2021. [DOI: 10.1007/s10562-021-03846-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Guan Y, Liu Y, Lv Q, Wang B. Fe decorated CeO2 microsphere catalyst with surface oxygen defect for NO reduction by CO. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Zhou Z, Li W, Liu Z. Significantly Enhanced Catalytic Performance of Fe 2(SO 4) 3/CeO 2 Catalyst for the Selective Catalytic Reduction of NO x by NH 3. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02977] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zizheng Zhou
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Weihua Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhiming Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Center for Pollution Control and Resource Recovery, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
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25
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Xue L, Hao L, Ding H, Liu R, Zhao D, Fu J, Zhang M. Complete and rapid degradation of glyphosate with Fe 3Ce 1O x catalyst for peroxymonosulfate activation at room temperature. ENVIRONMENTAL RESEARCH 2021; 201:111618. [PMID: 34237337 DOI: 10.1016/j.envres.2021.111618] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 06/26/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
Glyphosate, a common broad-spectrum herbicide, is a serious environmental pollutant that causes a significant threat to humans. Hence, there is a pressing task to remove glyphosate from the environment. Here, we report an excellent Fe3Ce1Ox catalyst synthesized via the one-step co-precipitation method for activating peroxymonosulfate (PMS) to degrade glyphosate at 25 °C. As a result, glyphosate is completely degraded with a high degradation rate of 400 mg L-1·h-1, and the TOC and TN removals are 85.6% and 80.8%, respectively. As proven by systematic characterizations, the Fe-Ce synergistic effect plays a significant role in promoting PMS activation. The main reactive oxygen species for glyphosate oxidation are surface-bound SO4-· and ·OH, produced by activating PMS by electron transfer between Fe2+/Fe3+ and Ce3+/Ce4+ of Fe3Ce1Ox. In light of the products determined, the possible degradation process of glyphosate is also speculated: C-N and C-P bonds of glyphosate molecules are attacked to form aminomethylphosphonic acid (AMPA) and orthophosphate (PO43-) by surface-bound SO4-· and ·OH that continuously mineralize and dephosphorylate AMPA to generate small molecules and inorganic ions, such as H2O and PO43-. The results of this work suggest that Fe3Ce1Ox/PMS could provide a potential candidate for efficiently removing organic compounds containing nitrogen or phosphorus from wastewater.
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Affiliation(s)
- Lingxiao Xue
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Lijing Hao
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Hui Ding
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China.
| | - Rui Liu
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Dan Zhao
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Jianfeng Fu
- School of Environmental Science & Engineering, Tianjin University, Jinnan District, Tianjin, 300350, China
| | - Mengling Zhang
- Huadian Aqua Membrane Separation Technology (Tianjin) Co. Ltd., Tianjin, 301700, China
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26
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Wang H, Qu Z, Liu L, Dong S, Qiao Y. Promotion of NH 3-SCR activity by sulfate-modification over mesoporous Fe doped CeO 2 catalyst: Structure and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125565. [PMID: 33689994 DOI: 10.1016/j.jhazmat.2021.125565] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 02/26/2021] [Accepted: 02/27/2021] [Indexed: 06/12/2023]
Abstract
The mesoporous Fe doped CeO2 catalyst after modifying organic sulfate functional groups show an excellent activity with above 80% NOx conversion in a temperature range of 250-450 °C. These organic-like sulfate groups bound to the Fe-O-Ce species leads to the strong electron interaction between Fe3+-O-Ce4+ species and sulfate groups, which modifies the acidity and redox properties of catalyst. The strong ability of S˭O/S-O in sulfate groups to accommodate electrons from a basic molecule is a driving force in the generation of acidic properties, and thus promotes to produce new Brønsted acid sites. The bondage of Fe-O-Ce species obviously inhibits the creation of thermostable bidentate NO3- species. Besides, the redox cycles between Fe3+ and Ce4+ are disrupted, thus inhibiting NH3 oxidation at medium-high temperatures and resulting in the increase of NOx conversion. Furthermore, the in situ DRIFTS results show that for the fresh samples, the coordinate NH3 reacts not only with NO3- through L-H mechanism, but also with oxygen species to form NOx. Differently for sulfated sample, the coordinate NH3 might react with achieved NO2 instead of the oxygen species through E-R mechanism, meanwhile the NH4+ could react with the NO3- species through L-H mechanism.
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Affiliation(s)
- Hui Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, China
| | - Zhenping Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, China.
| | - Lianlian Liu
- Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden
| | - Shicheng Dong
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, China
| | - Yujie Qiao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, China
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27
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Zheng X, Zhang G, Yao Z, Zheng Y, Shen L, Liu F, Cao Y, Liang S, Xiao Y, Jiang L. Engineering of crystal phase over porous MnO 2 with 3D morphology for highly efficient elimination of H 2S. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125180. [PMID: 33858115 DOI: 10.1016/j.jhazmat.2021.125180] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/27/2020] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
In the present work, we report a facile oxalate-derived hydrothermal method to fabricate α-, β- and δ-MnO2 catalysts with hierarchically porous structure and study the phase-dependent behavior for selective oxidation of H2S over MnO2 catalysts. It was disclosed that the oxygen vacancy, reducibility and acid property of MnO2 are essentially determined by the crystalline phase. Systematic experiments demonstrate that δ-MnO2 is superior in active oxygen species, activation energy and H2S adsorption capacity among the prepared catalysts. As a consequence, δ-MnO2 nanosphere with a hierarchically porous structure shows high activity and stability with almost 100% H2S conversion and sulfur selectivity at 210 °C, better than majority of reported Mn-based materials. Meanwhile, hierarchically porous structure of δ-MnO2 nanosphere alleviates the generation of by-product SO2 and sulfate, promoting the adoptability of Mn-based catalysts in industrial applications.
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Affiliation(s)
- Xiaohai Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Guanqing Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Zheng Yao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Yong Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Lijuan Shen
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China; Fujian Key Laboratory of Pollution Control & Resource Reuse, College of Environmental Science and Engineering, Fujian Normal University, Fuzhou, Fujian 350007, PR China.
| | - Fujian Liu
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Yanning Cao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Shijing Liang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China.
| | - Yihong Xiao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, PR China
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28
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Selective catalytic reduction of NO by Co-Mn based nanocatalysts. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2021. [DOI: 10.1515/ijcre-2020-0240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
One of the most significant aspects in selective catalytic reduction (SCR) of nitrogen oxides (NOx) is developing suitable catalysts by which the process occurs in a favorable way. At the present work SCR reaction by ammonia (NH3-SCR) was conducted using Co-Mn spinel and its composite with Fe-Mn spinel, as nanocatalysts. The nanocatalysts were fabricated through liquid routes and then their physicochemical properties such as phase composition, degree of agglomeration, particle size distribution, specific surface area and also surface acidic sites have been investigated by X-ray diffraction, Field Emission Scanning Electron Microscope, Energy-dispersive X-ray spectroscopy, energy dispersive spectroscopy mapping, Brunauer–Emmett–Teller, temperature-programmed reduction (H2-TPR) and temperature-programmed desorption of ammonia (NH3-TPD) analysis techniques. The catalytic activity tests in a temperature window of 150–400 °C and gas hourly space velocities of 10,000, 18,000 and 30,000 h−1 revealed that almost in all studied conditions, CoMn2O4/FeMn2O4 nanocomposite exhibited better performance in SCR reaction than CoMn2O4 spinel.
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29
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Ou X, Chen K, Wei L, Deng Y, Li J, Li B, Dong L. Effect of Co Doping on Magnetic and CO-SCR Properties of γ-Fe 2O 3. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00305] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xuemei Ou
- School of Chemistry and Chemical Engineering, Guangxi University, Daxue East Road 100, Nanning 530004, P. R. China
| | - Kean Chen
- School of Chemistry and Chemical Engineering, Guangxi University, Daxue East Road 100, Nanning 530004, P. R. China
| | - Longqing Wei
- School of Chemistry and Chemical Engineering, Guangxi University, Daxue East Road 100, Nanning 530004, P. R. China
| | - Yaqian Deng
- School of Chemistry and Chemical Engineering, Guangxi University, Daxue East Road 100, Nanning 530004, P. R. China
| | - Ju Li
- School of Chemistry and Chemical Engineering, Guangxi University, Daxue East Road 100, Nanning 530004, P. R. China
| | - Bin Li
- School of Chemistry and Chemical Engineering, Guangxi University, Daxue East Road 100, Nanning 530004, P. R. China
| | - Lihui Dong
- School of Chemistry and Chemical Engineering, Guangxi University, Daxue East Road 100, Nanning 530004, P. R. China
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30
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Comprehensive understanding of the superior performance of Sm-modified Fe2O3 catalysts with regard to NO conversion and H2O/SO2 resistance in the NH3-SCR reaction. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63666-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Jia X, Liu H, Zhang Y, Chen W, Tong Q, Piao G, Sun C, Dong L. Understanding the high performance of an iron-antimony binary metal oxide catalyst in selective catalytic reduction of nitric oxide with ammonia and its tolerance of water/sulfur dioxide. J Colloid Interface Sci 2021; 581:427-441. [PMID: 32777626 DOI: 10.1016/j.jcis.2020.07.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 02/05/2023]
Abstract
In recent years, Fe-based catalysts for the selective catalytic reduction of NO with NH3 (NH3-SCR) have been attracting more attention. In this work, a novel Fe-Sb binary metal oxide catalyst was synthesized using the ethylene glycol assisted co-precipitation method and was characterized using a series of techniques. It was found that the catalyst with a molar ratio of 7:3 (Fe:Sb) displayed the best NH3-SCR activity with 100% conversion of NOx (nitrogen oxides) over a wide temperature window and with good resistance to H2O + SO2 at 250 °C. The X-ray photoelectron spectroscopy (XPS) and in situ diffused reflectance infrared Fourier transform spectroscopy (in situ DRIFTS) of NOx adsorption results suggested that strong electron interactions between Fe and Sb in Fe-O-Sb species existed and electrons of Sb could be transferred to Fe through the 2Fe3+ + Sb3+ ↔ 2Fe2+ + Sb5+ redox cycle. The introduction of Sb significantly improved the adsorption behaviour of NOx species on the Fe0.7Sb0.3Ox surface, which benefitted the adsorption/transformation of NOx, thereby facilitating the NH3-SCR reaction. In addition, the Fe0.7Sb0.3Ox catalyst demonstrated a good tolerance of H2O and SO2, since the decomposition of NH4HSO4 on the catalyst surface was promoted by the introduction of Sb.
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Affiliation(s)
- Xuanxuan Jia
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, PR China
| | - Hao Liu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, PR China; School of Energy Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yu Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, PR China
| | - Wei Chen
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, PR China
| | - Qing Tong
- Center of Modern Analysis, School of the Environment, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210093, PR China
| | - Guangxia Piao
- School of Energy Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Chuanzhi Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, PR China.
| | - Lin Dong
- Center of Modern Analysis, School of the Environment, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210093, PR China
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32
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Kang L, Han L, Wang P, Feng C, Zhang J, Yan T, Deng J, Shi L, Zhang D. SO 2-Tolerant NO x Reduction by Marvelously Suppressing SO 2 Adsorption over Fe δCe 1-δVO 4 Catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:14066-14075. [PMID: 33064939 DOI: 10.1021/acs.est.0c05038] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
SO2-tolerant selective catalytic reduction (SCR) of NOx at low temperature is still challenging. Traditional metal oxide catalysts are prone to be sulfated and the as-formed sulfates are difficult to decompose. In this study, we discovered that SO2 adsorption could be largely restrained over FeδCe1-δVO4 catalysts, which effectively restrained the deposition of sulfate species and endowed catalysts with strong SO2 tolerance at an extremely low temperature of 240 °C. The increasing oxygen vacancies, enhanced redox properties, and improved acidity contributed to the SCR activity of the FeδCe1-δVO4 catalyst. The reaction pathway changed from the reaction between bidentate nitrate and the NH3 species over CeVO4 catalysts via the Langmuir-Hinshelwood mechanism to that between gaseous NOx and the NH4+/NH3 species over FeδCe1-δVO4 catalysts via the Eley-Rideal mechanism. The effective suppression of SO2 adsorption allowed FeδCe1-δVO4 catalysts to maintain the Eley-Rideal pathways on account of the reduced formation of sulfate species. This work demonstrated an effective route to improve SO2 tolerance via modulating SO2 adsorption on Ce-based vanadate catalysts, which presented a new point for the development of high-performance SO2-tolerant SCR catalysts.
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Affiliation(s)
- Lin Kang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Lupeng Han
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Penglu Wang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Chong Feng
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Jianping Zhang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Tingting Yan
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Jiang Deng
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Liyi Shi
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, State Key Laboratory of Advanced Special Steel, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
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33
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Shan Y, Liu Y, Li Y, Yang W. A review on application of cerium-based oxides in gaseous pollutant purification. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117181] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Submonolayer Vanadium and Manganese Binary Metal Oxides Supported on Three-Dimensionally Ordered Mesoporous CeO2 for Efficient Low-Temperature NH3–SCR. Catal Letters 2020. [DOI: 10.1007/s10562-020-03387-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Zheng X, Li Y, Liang S, Yao Z, Zheng Y, Shen L, Xiao Y, Zhang Y, Au C, Jiang L. Promoting effect of Cu-doping on catalytic activity and SO2 resistance of porous CeO2 nanorods for H2S selective oxidation. J Catal 2020. [DOI: 10.1016/j.jcat.2020.06.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Abstract
In this work, the effect of monometallic Ni or Sn and bimetallic NiSn deposition on the activity of FeCeOx catalysts in high-temperature water–gas (HT-WGS) reactions was investigated. It was found that the HT-WGS performance of FeCeOx has significantly improved after the deposition of Sn together with Ni on it. Furthermore, the bimetallic NiSn/FeCeOx catalyst showed higher activity compared to the monometallic Ni/FeCeOx and Sn/FeCeOx catalysts within the tested temperature range (450–600 °C). Although the Ni/FeCeOx catalyst showed methanation activity at a temperature below 550 °C, the NiSn/FeCeOx catalyst suppressed the methane formation to zero in the WGS. Besides, the NiSn/FeCeOx catalyst exhibited an excellent time-on-stream stability without methanation reaction, even at a steam-to-CO ratio as low as 0.8. The combination of Ni and Sn supported on FeCeOx led to a large lattice strain, the formation of NiSn alloy, and a strong synergistic effect between the bimetallic NiSn and FeCeOx mixed oxide support interface. All these features are very important in achieving the best activity and stability of NiSn/FeCeOx in the HT-WGS reaction.
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37
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Surface configuration modulation for FeO -CeO2/γ-Al2O3 catalysts and its influence in CO oxidation. J Catal 2020. [DOI: 10.1016/j.jcat.2020.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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The Role of Nitrate on the Sol-Gel Spread Self-Combustion Process and Its Effect on the NH3-SCR Activity of Magnetic Iron-Based Catalyst. Catalysts 2020. [DOI: 10.3390/catal10030314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Sol-gel spread self-combustion is the burning of the complexing agent in dried gel and the oxidant. Meanwhile, high temperature takes place during the combustion process, which is harmful to the pore structure of the catalyst. The nitrate from metal nitrate precursors as an oxidant could participate in the spread of the self-combustion process. Therefore, the influence of nitrate from metal nitrate on the spread self-combustion of an iron–cerium–tungsten citric acid gel and its catalytic performance of NOx reduction were investigated by removing nitrate via the dissolution of washing co-precipitation with citric acid and re-introducing nitric acid into the former solution. It was found that the removal of nitrate contributes to enhancing the NH3–SCR activity of the magnetic mixed oxide catalyst. The NOx reduction efficiency was close to 100% for Fe85Ce10W5–CP–CA at 250 °C while the highest was only 80% for the others. The results of thermal analysis demonstrate that the spread self-combustion process of citric acid dried gel is enhanced by re-introducing nitric acid into the citric acid dissolved solution when compared with the removal of nitrate. In addition, the removal of nitrate helps in the formation of γ-Fe2O3 crystallite in the catalyst, refining the particle size of the catalyst and increasing its pore volume. The removal of nitrate also contributes to the formation of Lewis acid sites and Brønsted acid sites on the surface of the catalyst compared with the re-introduction of nitric acid. The in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) demonstrates that both Eley–Rideal (E–R) and Langmuir–Hinshelwood (L–H) mechanisms exist over Fe85Ce10W5–CP–CA at 250 °C with E–R as its main mechanism.
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39
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Zheng X, Li Y, Zheng Y, Shen L, Xiao Y, Cao Y, Zhang Y, Au C, Jiang L. Highly Efficient Porous FexCe1–xO2−δ with Three-Dimensional Hierarchical Nanoflower Morphology for H2S-Selective Oxidation. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05486] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiaohai Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Yanli Li
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, P.R.China
| | - Yong Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Lijuan Shen
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Yihong Xiao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Yanning Cao
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Yongfan Zhang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, P.R.China
| | - Chaktong Au
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian 350002, P.R.China
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40
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Keller S, Agostini G, Antoni H, Kreyenschulte CR, Atia H, Rabeah J, Bentrup U, Brückner A. The Effect of Iron and Vanadium in VO
y
/Ce
1‐x
Fe
x
O
2‐δ
Catalysts in Low‐Temperature Selective Catalytic Reduction of NO
x
by Ammonia. ChemCatChem 2020. [DOI: 10.1002/cctc.201902167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sonja Keller
- Leibniz-Institute for Catalysis at the University of Rostock Albert-Einstein-Str. 29a Rostock D-18059 Germany
| | - Giovanni Agostini
- Leibniz-Institute for Catalysis at the University of Rostock Albert-Einstein-Str. 29a Rostock D-18059 Germany
- CELLS-ALBA, Carretera B.P. 1413 Cerdanyola del Vallès 08290 Barcelona Spain
| | - Hendrik Antoni
- Laboratory of Industrial Research Ruhr-University Bochum Universitätsstr. 150 Bochum D-44780 Germany
| | - Carsten R. Kreyenschulte
- Leibniz-Institute for Catalysis at the University of Rostock Albert-Einstein-Str. 29a Rostock D-18059 Germany
| | - Hanan Atia
- Leibniz-Institute for Catalysis at the University of Rostock Albert-Einstein-Str. 29a Rostock D-18059 Germany
| | - Jabor Rabeah
- Leibniz-Institute for Catalysis at the University of Rostock Albert-Einstein-Str. 29a Rostock D-18059 Germany
| | - Ursula Bentrup
- Leibniz-Institute for Catalysis at the University of Rostock Albert-Einstein-Str. 29a Rostock D-18059 Germany
| | - Angelika Brückner
- Leibniz-Institute for Catalysis at the University of Rostock Albert-Einstein-Str. 29a Rostock D-18059 Germany
- Department of Life Light & Matter Faculty for Interdisciplinary Research University of Rostock Albert-Einstein-Str. 25 Rostock D-18059 Germany
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41
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Wen Z, Lu J, Zhang Y, Cheng G, Huang S, Chen J, Xu R, Ming YA, Wang Y, Chen R. Facile inverse micelle fabrication of magnetic ordered mesoporous iron cerium bimetal oxides with excellent performance for arsenic removal from water. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121172. [PMID: 31522062 DOI: 10.1016/j.jhazmat.2019.121172] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 08/27/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
In this study, magnetic ordered mesoporous Fe/Ce bimetal oxides (OMICs) were successfully synthesized via the modified sol-gel-based inverse micelle method. The textural/structure properties, surface chemistry and adsorption behavior of OMICs could be easily adjusted by using the calcination temperature. The sintering of samples would decrease the surface area, while expand the pore and crystallite size, which resulted in the formation of highly ordered inner-connected structure. Compared with pure mesoporous iron oxides (MI) and mesoporous cerium oxides (MC), this ordered mesoporous iron-cerium bimetal oxides (OMIC-3, 450 °C) exhibited remarkable arsenic adsorption performance. The maximum adsorption capacities of As(III) and As(V) for OMIC-3 were 281.34 and 216.72 mg/g, respectively, and both As(III)/As(V) adsorption kinetics were well described by the pseudo-second order. The ionic strength and coexisting ions (except SiO32- and PO43-) did not affect arsenic removal, while humic acid (HA) significantly influenced on the arsenic removal even at a lower concentration. The adsorption mechanism study revealed that both the surface charge and surface M-OH groups of OMIC-3 were played the key roles in arsenic removal. The reusable property suggested that this magnetic OMIC-3 was a promising excellent adsorbent for decontamination of arsenic-polluted (especially As(III)-polluted) wastewater.
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Affiliation(s)
- Zhipan Wen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China.
| | - Jun Lu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, People's Republic of China
| | - Gang Cheng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China.
| | - Shengnan Huang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Jin Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Rui Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Yin-An Ming
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Yingru Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Rong Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China.
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42
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Qin J, Long Y, Gou G, Wu W, Luo Y, Cao X, Luo S, Wang K, Ma J. Tuning effect of amorphous Fe 2O 3 on Mn 3O 4 for efficient atom-economic synthesis of imines at low temperature: improving [O] transfer cycle of Mn 3+/Mn 2+ in Mn 3O 4. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01021a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Fe2O3 modified Mn3O4 catalyst (Fe5Mn5-100) has been prepared by adopting a simple co-precipitation method following low temperature baking. Fe5Mn5-100 showed exceptionally high catalytic activity for the production of imine.
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Affiliation(s)
- Jiaheng Qin
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Yu Long
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Galian Gou
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Wei Wu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Yutong Luo
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Xiao Cao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Shicheng Luo
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Kaizhi Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Jiantai Ma
- State Key Laboratory of Applied Organic Chemistry (SKLAOC)
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
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43
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Song Z, Xing Y, Zhang T, Zhao J, Wang J, Mao Y, Zhao B, Zhang X, Zhao M, Ma Z. Effectively promoted catalytic activity by adjusting calcination temperature of Ce‐Fe‐O
x
catalyst for NH
3
‐SCR. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zhongxian Song
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyHenan University of Urban Construction Pingdingshan 467000 People's Republic of China
| | - Yun Xing
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Tingji Zhang
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Jinggang Zhao
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Junkai Wang
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Yanli Mao
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyHenan University of Urban Construction Pingdingshan 467000 People's Republic of China
| | - Baolin Zhao
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyHenan University of Urban Construction Pingdingshan 467000 People's Republic of China
| | - Xuejun Zhang
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Min Zhao
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Ziang Ma
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
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44
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Song Z, Xing Y, Zhang X, Zhao H, Zhao M, Zhao J, Ma Z, Zhang Q. Silicotungstic acid modified Ce‐Fe‐O
x
catalyst for selective catalytic reduction of NO
x
with NH
3
: Effect of the amount of HSiW. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5160] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhongxian Song
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyHenan University of Urban Construction Pingdingshan 467036 People's Republic of China
| | - Yun Xing
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Xuejun Zhang
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Heng Zhao
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Min Zhao
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Jinggang Zhao
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Zi'ang Ma
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Qiulin Zhang
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming 650500 Republic of China
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45
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Li D, Li K, Xu R, Zhu X, Wei Y, Tian D, Cheng X, Wang H. Enhanced CH 4 and CO Oxidation over Ce 1- xFe xO 2-δ Hybrid Catalysts by Tuning the Lattice Distortion and the State of Surface Iron Species. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19227-19241. [PMID: 31067022 DOI: 10.1021/acsami.9b05409] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
CeO2-Fe2O3 mixed oxides are very attractive as catalysts for catalytic oxidation. Herein, we report the structural dependence of the Ce1- xFe xO2-δ catalysts for CH4 combustion and CO oxidation via changing lattice distortion degrees, surface Fe2O3 states, and oxygen vacancy concentrations. The lattice distortion degree and oxygen vacancy concentration of Ce-Fe-O solid solution can be tuned by changing the contents of Fe and the precipitation temperatures in the preparation process. The precipitation at relatively high temperature (70 °C) promotes the lattice distortion, whereas a lower temperature (0 °C) helps the formation of surface oxygen vacancies. The in situ diffuse reflectance infrared/Raman experiments and the physicochemical characterization suggest that both the CO and CH4 oxidations mainly follow a Mars-van Krevelen mechanism. Both the lattice distortion and the surface iron species play a crucial role in determining the catalytic activity by affecting the redox property of the catalysts. The surface iron species, combined with the oxygen vacancies, improve the catalytic performance by enhancing the adsorption capacity of reactants and reducibility of catalysts. The lattice distortion of CeO2 contributes to the catalytic activity by tuning the oxygen mobility in the bulk, which promotes the re-oxidation rate of catalysts.
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46
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Comparative study on transition element doped Mn–Zr–Ti-oxides catalysts for the low-temperature selective catalytic reduction of NO with NH3. REACTION KINETICS MECHANISMS AND CATALYSIS 2019. [DOI: 10.1007/s11144-019-01586-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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Li N, Zhang Q, Bibi R, Shen Q, Ngulube R, Liu Y, Zhou J. Catalytic Hydrogenation of Acetic Acid to Acetaldehyde: Synergistic Effect of Bifunctional Co/Ce‐Fe Oxide Solid Solution Catalysts. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900055] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Naixu Li
- School of Chemistry and Chemical Engineering, Southeast University Nanjing Jiangsu 211189 China
- Jiangsu Key Laboratory for Biomass Energy and Material Nanjing Jiangsu 210042 China
| | - Qi Zhang
- School of Chemistry and Chemical Engineering, Southeast University Nanjing Jiangsu 211189 China
| | - Rehana Bibi
- School of Chemistry and Chemical Engineering, Southeast University Nanjing Jiangsu 211189 China
| | - Quanhao Shen
- School of Chemistry and Chemical Engineering, Southeast University Nanjing Jiangsu 211189 China
| | - Richard Ngulube
- School of Chemistry and Chemical Engineering, Southeast University Nanjing Jiangsu 211189 China
| | - Yunyi Liu
- School of Chemistry and Chemical Engineering, Southeast University Nanjing Jiangsu 211189 China
| | - Jiancheng Zhou
- School of Chemistry and Chemical Engineering, Southeast University Nanjing Jiangsu 211189 China
- Jiangsu Province Hi‐Tech Key Laboratory for Bio‐medical Research, Southeast University Nanjing Jiangsu 211189 China
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48
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Liu H, Yi Y, Qin Z, Wu Y, Li L, Chu B, Jin G, Li R, Tong Z, Dong L, Li B. In Situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy Study of NO + CO Reaction on La0.8Ce0.2Mn1–xFexO3 Perovskites: Changes in Catalytic Properties Caused by Fe Incorporation. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01088] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hao Liu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Yunan Yi
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Zuzeng Qin
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Yaohui Wu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Lulu Li
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Bingxian Chu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Guangzhou Jin
- School of Chemistry and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
| | - Ruonan Li
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Zhangfa Tong
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Lihui Dong
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
| | - Bin Li
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.R. China
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49
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Development of Catalysts for Abating Toxic Nitrogen Oxides in Gas Emissions of Nitrogen Acid Production. SCIENCE AND INNOVATION 2019. [DOI: 10.15407/scine15.01.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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50
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Amorphous Fe2O3 improved [O] transfer cycle of Ce4+/Ce3+ in CeO2 for atom economy synthesis of imines at low temperature. J Catal 2019. [DOI: 10.1016/j.jcat.2019.01.032] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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