1
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Ko S, Tang X, Gao F, Yi H, Liu H, Luo N. Remarkable N 2-selectivity enhancement of NH 3-SCR over HPMo modified MnCo-BTC@SiO 2 catalyst. J Environ Sci (China) 2024; 138:482-495. [PMID: 38135414 DOI: 10.1016/j.jes.2023.03.037] [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] [Received: 01/05/2023] [Revised: 03/23/2023] [Accepted: 03/26/2023] [Indexed: 12/24/2023]
Abstract
In this work, the phosphomolybdate (HPMo) modification strategy was applied to improve the N2 selectivity of MnCo-BTC@SiO2 catalyst for the selective catalytic reduction of NOx, and further, the mechanism of HPMo modification on enhanced catalytic performance was explored. Among MnCo-BTC@SiO2-x catalysts with different HPMo concentrations, MnCo-BTC@SiO2-0.75 catalyst exhibited not only the highest NH3-SCR performance (∼95% at 200-300°C) but also the best N2 selectivity (exceed 80% at 100-300°C) due to the appropriate redox capacity, greater surface acidity. X-ray photoelectron spectrometer (XPS) and temperature programmed reduction of H2 (H2-TPR) results showed that the modification with HPMo reduced the oxidation-reduction performance of the catalyst due to electron transfer from Mo5+ to Mn4+/Mn3+ and prevent the excessive oxidation of ammonia adsorption species. NH3 temperature-programmed desorption of (NH3-TPD) results showed that the modification with HPMo could significantly improve the surface acidity and NH3 adsorption, which enhance the catalytic activity and N2 selectivity. In-situ diffused reflectance infrared Fourier transform spectroscopy (in-situ DRIFTS) revealed that modification with HPMo increased significantly the amount of adsorbed NH3 species on the Bronsted acid site and CB/CL, it suppressed the production of N2O by inhibiting the production of NH species, the deep dehydrogenation of ammonia adsorption species. This study provided a simple design strategy for the catalyst to improve the low-temperature catalytic performance and N2 selectivity.
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Affiliation(s)
- Songjin Ko
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Department of Chemistry, Pyongyang University of Architecture, Pyongyang, DPR of Korea
| | - Xiaolong Tang
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Fengyu Gao
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Honghong Yi
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Hengheng Liu
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ning Luo
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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2
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Tan Y, Qi M, Jiang H, Wang B, Zhang X. Determination of uric acid in serum by SERS system based on V O-MnCo 2O 4/Ag nanozyme. Anal Chim Acta 2023; 1274:341584. [PMID: 37455071 DOI: 10.1016/j.aca.2023.341584] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 06/07/2023] [Accepted: 07/02/2023] [Indexed: 07/18/2023]
Abstract
The level of uric acid is crucial to human health. Octahedral oxygen vacancy MnCo2O4/Ag (VO-MnCo2O4/Ag) nanozyme was successfully prepared by simple hydrothermal, calcination and self-reduction methods. VO-MnCo2O4/Ag nanozyme is rich in Mn2+/Mn3+ and CO2+/CO3+ redox electron pairs, large specific surface area and oxygen vacancies. VO-MnCo2O4/Ag nanozyme showed high uricase-like activity and peroxidase-like activity. At the same time, the SERS signal of the detected molecule could be significantly enhanced after the catalytic reaction of the VO-MnCo2O4/Ag nanozyme. The Km values of VO-MnCo2O4/Ag nanozyme for H2O2 and TMB were 0.04 mM and 0.027 mM respectively. Based on the uric acid oxidase-like and peroxidase-like activities of VO-MnCo2O4/Ag, we developed a label-free, sensitive, and reliable SERS uric acid detection system. The detection linear range of uric acid is 0.01 μM-1000 μM and the detection of limit is 7.8 × 10-9 M. The results show that the sensing system has good accuracy, sensitivity, selectivity, and stability. It can be applied to the determination of samples under different conditions. This study provides profound insights into the design of enzyme-like activity regulation and SERS properties regulation of nanozymes, provides guidance for the study of reaction kinetics and catalytic mechanism of nanozymes, and has broad application prospects in the field of nanozymes and SERS sensing analysis.
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Affiliation(s)
- Yaoyu Tan
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Mengyao Qi
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Huan Jiang
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Baihui Wang
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Xia Zhang
- School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China.
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3
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Cheng X, Liu Y, Yang L, Yang M, Zhang Y, Ma C, Meng X, Xu J, Wang J, Qiao W. Understanding structure-performance relationships of CoO x/CeO 2 catalysts for NO catalytic oxidation: Facet tailoring and bimetallic interface designing. JOURNAL OF HAZARDOUS MATERIALS 2023; 451:131144. [PMID: 36921412 DOI: 10.1016/j.jhazmat.2023.131144] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/21/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Crystalline structure and bimetallic interaction of metal oxides are essential factors to determine the catalytic activity. Herein, three different CoOx/CeO2 catalysts, employing CeO2 nanorods (predominately exposed {110 facet), CeO2 nanopolyhedra ({111} facet) and CeO2 nanocubes ({100} facet) as the supports, are successfully prepared for investigating the effect of exposed crystal facets and bimetallic interface interaction on NO oxidation. In comparison with the {111} and {100} facets, the exposed crystal facet {110} exists the best superiority to anchor and stabilize Co species. Moreover, ultra-small CoOx clusters composed of strong Co-O coordination shells with minor Co-O-Ce interaction are formed and uniformly dispersed on the CeO2 nanorods. Structural characterizations reveal that the active exposed crystal facet {110} and the strong bimetallic interface interaction in CoOx/CeO2-nanorods (R-CC) result in more structural defect, endowing it with abundant oxygen vacancies, excellent reducibility and strong adsorption capacity. The DRIFTs spectra further indicate that the exposed crystal facet {110} has a significant promoting effect on the strength of nitrates compared with {111} and {100} facets. The bimetallic interface interaction not only significantly facilitates the formation of nitrate species at lower temperature, but also effectively suppresses the generation of sulfate and lower the sulphation rate. Therefore, R-CC catalyst exhibits the maximum NO oxidation activity with the conversion of 86.4 % at 300 °C and still sustains its high activity under cyclic condition or 50 ppm SO2. The provided crystalline structure and interaction-enhanced strategy sheds light on the design of high-activity NO oxidation catalysts.
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Affiliation(s)
- Xiaomin Cheng
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yiqi Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Lubin Yang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Mingjie Yang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yongzheng Zhang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Cheng Ma
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xuan Meng
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jing Xu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Jitong Wang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Wenming Qiao
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
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4
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Du B, Hu Y, Cheng T, Jiang Z, Wang Z, Zhu C. Low-temperature selective catalytic reduction of NO with NH 3 over an FeO x /β-MnO 2 composite. RSC Adv 2023; 13:6378-6388. [PMID: 36845597 PMCID: PMC9943891 DOI: 10.1039/d3ra00235g] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 02/13/2023] [Indexed: 02/24/2023] Open
Abstract
A series of Fe-modified β-MnO2 (FeO x /β-MnO2) composite catalysts were prepared by an impregnation method with β-MnO2 and ferro nitrate as raw materials. The structures and properties of the composites were systematically characterized and analyzed by X-ray diffraction, N2 adsorption-desorption, high-resolution electron microscopy, temperature-programmed reduction of H2, temperature-programmed desorption of NH3, and FTIR infrared spectroscopy. The deNO x activity, water resistance, and sulfur resistance of the composite catalysts were evaluated in a thermally fixed catalytic reaction system. The results indicated that the FeO x /β-MnO2 composite (Fe/Mn molar ratio of 0.3 and calcination temperature of 450 °C) had higher catalytic activity and a wider reaction temperature window compared with β-MnO2. The water resistance and sulfur resistance of the catalyst were enhanced. It reached 100% NO conversion efficiency with an initial NO concentration of 500 ppm, a gas hourly space velocity of 45 000 h-1, and a reaction temperature of 175-325 °C. The appropriate Fe/Mn molar ratio sample had a synergistic effect, affecting the morphology, redox properties, and acidic sites, and helped to improve the low-temperature NH3-SCR activity of the composite catalyst.
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Affiliation(s)
- Bo Du
- School of Resource and Environmental Engineering, Hefei University of Technology Hefei 230009 P. R. China +86 551 62901649 +86 551 62901523.,Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology Hefei 230009 P. R. China.,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology Hefei 230009 P. R. China
| | - Yuting Hu
- School of Resource and Environmental Engineering, Hefei University of Technology Hefei 230009 P. R. China +86 551 62901649 +86 551 62901523.,Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology Hefei 230009 P. R. China.,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology Hefei 230009 P. R. China
| | - Ting Cheng
- School of Resource and Environmental Engineering, Hefei University of Technology Hefei 230009 P. R. China +86 551 62901649 +86 551 62901523.,Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology Hefei 230009 P. R. China.,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology Hefei 230009 P. R. China
| | - Zhaozhong Jiang
- School of Resource and Environmental Engineering, Hefei University of Technology Hefei 230009 P. R. China +86 551 62901649 +86 551 62901523.,Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology Hefei 230009 P. R. China.,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology Hefei 230009 P. R. China
| | - Zhenzhen Wang
- School of Resource and Environmental Engineering, Hefei University of Technology Hefei 230009 P. R. China +86 551 62901649 +86 551 62901523.,Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology Hefei 230009 P. R. China.,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology Hefei 230009 P. R. China
| | - Chengzhu Zhu
- School of Resource and Environmental Engineering, Hefei University of Technology Hefei 230009 P. R. China +86 551 62901649 +86 551 62901523.,Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology Hefei 230009 P. R. China.,Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology Hefei 230009 P. R. China.,Low Temperature Denitration Engineering Research Center of Anhui Province Hefei 230001 P. R. China
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5
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Liu Y, Liu J, Zhu B, Chen J, Li F, Sun Y. Insight into the micro-mechanism of Co doping to improve the deNOx performance and H2O resistance of β-MnO2 catalysts. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.130983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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6
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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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7
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Chen W, Zou R, Wang X. Toward an Atomic-Level Understanding of the Catalytic Mechanism of Selective Catalytic Reduction of NO x with NH 3. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Weibin Chen
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
| | - Ruqiang Zou
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
| | - Xidong Wang
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
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8
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Panigrahi TH, Sahoo SR, Murmu G, Maity D, Saha S. Current challenges and developments of inorganic/organic materials for the abatement of toxic nitrogen oxides (NOx) – A critical review. PROG SOLID STATE CH 2022. [DOI: 10.1016/j.progsolidstchem.2022.100380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Gui R, Yan Q, Xue T, Gao Y, Li Y, Zhu T, Wang Q. The promoting/inhibiting effect of water vapor on the selective catalytic reduction of NO x. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129665. [PMID: 35907283 DOI: 10.1016/j.jhazmat.2022.129665] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/02/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
In the field of nitrogen oxides (NOx) abatement, developing selective catalytic reduction (SCR) catalysts that can operate stably in the practical conditions remains a big challenge because of the complexity and uncertainty of actual flue gas emissions. As water vapor is unavoidable in the actual flue gas, it is indispensable to explore its effect on the performance of SCR catalysts. Many studies have proved that the effects of H2O on de-NOx activity of SCR catalysts were indeed observed during SCR reactions operated under wet conditions. Whether the effect is promotive or inhibitory depends on the reaction conditions, catalyst types and reducing agents used in SCR reaction. This review focuses on the effect of H2O on SCR catalysts and SCR reaction, including promoting effect, inhibiting effect, as well as the effecting mechanism. Besides, various strategies for developing a water-resistant SCR catalyst are also included. We hope that this work can give a more comprehensive insight into the effects of H2O on SCR catalysts and help with the rational design of water-resistant SCR catalysts for further practical application in NOx abatement field.
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Affiliation(s)
- Rongrong Gui
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Qinghua Yan
- Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Tianshan Xue
- Institute of Atmospheric Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yanshan Gao
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
| | - Yuran Li
- Research Center for Process Pollution Control, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Tingyu Zhu
- Research Center for Process Pollution Control, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Qiang Wang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
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10
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Wang F, Wang P, Lan T, Shen Y, Ren W, Zhang D. Ultralow-Temperature NO x Reduction over SmMn 2O 5 Mullite Catalysts Via Modulating the Superficial Dual-Functional Active Sites. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Fuli Wang
- School of Environmental and Chemical Engineering, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Penglu Wang
- School of Environmental and Chemical Engineering, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Tianwei Lan
- School of Environmental and Chemical Engineering, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Yongjie Shen
- School of Environmental and Chemical Engineering, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Wei Ren
- School of Environmental and Chemical Engineering, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Dengsong Zhang
- School of Environmental and Chemical Engineering, College of Sciences, Shanghai University, Shanghai 200444, China
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11
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Low-Temperature NH3-SCR on Cex-Mn-Tiy Mixed Oxide Catalysts: Improved Performance by the Mutual Effect between Ce and Ti. Catalysts 2022. [DOI: 10.3390/catal12050471] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
A series of Cex-Mn-Tiy catalysts were synthesized using the coprecipitation method, and sodium carbonate solution was used as a precipitant. The various catalysts were assessed by selective catalytic reduction of NOx with NH3, and characterized by X-ray diffraction, Raman spectroscopy, H2 temperature-programmed reduction, NH3 temperature-programmed desorption, and X-ray photoelectron spectroscopy to investigate the physicochemical properties, surface acidity, and redox abilities of the Cex-Mn-Tiy catalysts. The Ce0.1-Mn-Ti0.1 catalyst exhibited the best catalytic performance (more than 90% NOx conversion in the range of 75 to 225 °C), as a result of proper redox ability, abundant acid sites, high content of Mn4+ and Ce3+, and surface-adsorbed oxygen (OS). The results of in situ DRIFT spectroscopy showed that the NH3-SCR reaction followed both the E-R and L-H paths over the Ce0.1-Mn-Ti0.1 catalyst, and it occurred faster and more sharply when it mainly abided by the E-R mechanism.
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12
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Wang G, Liang Y, Song J, Xu K, Pan Y, Xu X, Zhao Y. Co-doped MnCeOx/ZrO2 catalysts for low temperature selective catalytic reduction of NO. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04701-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Wen S, Mu M, Xie Q, Zhao B, Song W. Investigation of Sulfur Doping in Mn-Co Oxide Nanotubes on Surface-Enhanced Raman Scattering Properties. Anal Chem 2022; 94:5987-5995. [PMID: 35389611 DOI: 10.1021/acs.analchem.2c00520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Doping engineering is an efficient strategy to manipulate the optoelectronic properties of metal oxides for sensing, catalysis, and energy applications. Herein, we have demonstrated the fabrication of sulfur (S)-doped Mn-Co oxides to regulate their band and surface electronic structures, which is beneficial to enhancing the charge transfer (CT) between the metal oxides and their adsorbed molecules. As expected, significantly enhanced SERS signals are achieved on S-doped Mn-Co oxide nanotubes, and the minimum detection concentration can reach as low as 10-8 M. Furthermore, the change in the electronic structure caused by S-doping provides different microelectric fields to influence the orientation of the interaction between the probe molecules and the substrate. Additionally, the evaluation of the oxidase-like catalytic activity of the substrate proved that, with an increase in the ratio of Co2+/Co3+ content, the number of electrons on the substrate increases, which promotes the CT process and further increases the degree of CT. The nonmetallic doping route in semiconducting metal oxides can provide effective and stable SERS activity; moreover, it provides a new strategy for exploring the relationship between CT in catalysis and SERS performance of semiconductors.
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Affiliation(s)
- Sisi Wen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Ming Mu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Qinhui Xie
- School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P. R. China
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wei Song
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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Abstract
In recent years, low-temperature SCR (Selective Catalytic Reduction) denitrification technology has been popularized in non-power industries and has played an important role in the control of industrial flue gas NOx emissions in China. Currently, the most commonly used catalysts in industry are V2O5-WO3(MoO3)/TiO2, MnO2-based catalysts, CeO2-based catalysts, MnO2-CeO2 catalysts and zeolite SCR catalysts. The flue gas emitted during industrial combustion usually contains SO2, moisture and alkali metals, which can affect the service life of SCR catalysts. This paper summarizes the mechanism of catalyst poisoning and aims to reduce the negative effect of NH4HSO4 on the activity of the SCR catalyst at low temperatures in industrial applications. It also presents the outstanding achievements of domestic companies in denitrification in the non-power industry in recent years. Much progress has been made in the research and application of low-temperature NH3-SCR, and with the renewed demand for deeper NOx treatments, new technologies with lower energy consumption and more functions need to be developed.
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15
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Zhang H, Li Z, Liu T, Zhang M, Deng S, Li Y, Liang P. Satisfactory Anti-Interference and High Performance of the 1Co-1Ce/Mn@ZSM-5 Catalyst for Simultaneous Removal of NO and Hg 0 in Abominable Flue Gas. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:3596-3603. [PMID: 35195995 DOI: 10.1021/acs.est.2c00143] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The removal performance of NO and Hg0, the operating temperature window, and the resistance of SO2 and H2O on Mn@ZSM-5 catalyst, which was synthesized by a one-step hydrothermal method with manganese oxide as the active component, were improved by doping different molar ratios of Co/Ce. Co and Ce doping increased the content of Mn4+ as well as of chemisorbed oxygen and promoted the NO and Hg0 removal performance, which reached 96.7 and 98.9%, respectively, in flue gas over the 1Co-1Ce/Mn@ZSM-5 catalyst. Furthermore, with SO2 and H2O addition, it decreased slightly to 88.4 and 89.3%, respectively, and then remained stable. The coexistence of SO2 and H2O had a synergistic poisoning effect on the activity of the catalyst, while the doping of Co and Ce had a positive influence on the tolerance to SO2 and H2O. The excellent anti-interference and high performance of the 1Co-1Ce/Mn@ZSM-5 catalyst in the abominable flue gas were mainly due to the outer surface modification of organosilane and because the sacrificial element Co protected the active sites of Ce and Mn from poisoning, which prevented the redox ability of the catalyst from getting affected.
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Affiliation(s)
- Huawei Zhang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, P.R. China
| | - Zishun Li
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, P.R. China
| | - Ting Liu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, P.R. China
| | - Mingzhu Zhang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, P.R. China
| | - Shengnan Deng
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, P.R. China
| | - Yincui Li
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, P.R. China
| | - Peng Liang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, P.R. China
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16
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Preparation of Cordierite Monolith Catalysts with the Coating of K-Modified Spinel MnCo2O4 Oxide and Their Catalytic Performances for Soot Combustion. Catalysts 2022. [DOI: 10.3390/catal12030295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Diesel engines are important for heavy-duty vehicles. However, particulate matter (PM) released from diesel exhaust should be eliminated. Nowadays, catalytic diesel particulate filters (CDPF) are recognized as a promising technology. In this work, a series of monolith Mn1−nKnCo2O4 catalysts were prepared by the simple citric acid method. The as-prepared catalysts displayed good catalytic performance for soot combustion and the Mn0.7K0.3Co2O4 catalyst gave the best catalytic performance among all the prepared samples. The T10 and Tm of Mn0.7K0.3Co2O4-HC catalyst for soot combustion are 310 and 439 °C, respectively. The physical and chemical properties of catalysts were characterized by means of SEM, XPS, H2-TPR, Raman and other techniques. The characterization results indicate that K substitution is favorable for the formation of oxygen vacancies, enhancing the mobility of active oxygen species, and improving the redox properties and so on. In-situ Raman results prove that the strength of Co-O bonds in the catalysts became weak during the reaction at high temperatures. In addition, SEM and ultrasonic test results show that the peeling rate of the coat-layer is less than 5%. The as-prepared catalysts can be taken as one kind of candidate catalyst for promising application in soot combustion because of its facile synthesis, low cost and high catalytic activity.
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17
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Ko S, Tang X, Gao F, Wang C, Liu H, Liu Y. Selective catalytic reduction of NOx with NH3 on Mn, Co-BTC-derived catalysts: Influence of thermal treatment temperature. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122843] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Guo RT, Qin B, Wei LG, Yin TY, Zhou J, Pan WG. Recent progress of low-temperature selective catalytic reduction of NOx with NH3 over manganese oxide-based catalysts. Phys Chem Chem Phys 2022; 24:6363-6382. [DOI: 10.1039/d1cp05557g] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective catalytic reduction with NH3 (NH3−SCR) was the most efficient approach to mitigate the emission of nitrogen oxides (NOx). Although the conventional manganese oxide-based catalyst had gradually become a kind...
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19
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Li L, Ge C, Ji J, Tan W, Wang X, Wei X, Guo K, Tang C, Dong L. Effects of different methods of introducing Mo on denitration performance and anti-SO2 poisoning performance of CeO2. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63778-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Facile synthesis of hollow nanotube MnCoOx catalyst with superior resistance to SO2 and alkali metal poisons for NH3-SCR removal of NOx. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118517] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Zhou Z, Wang Y, Yuan Q, Guo Y, Guo W, Xin Z, Zhang B, Guo R. Facile Preparation of CeO
2
Supported on Graphene Oxide Sheets for NH
3
‐SCR: Improvement of Catalytic Activity and SO
2
Tolerance. ChemistrySelect 2021. [DOI: 10.1002/slct.202101102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Zhiyuan Zhou
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai 200090 China
| | - Yongzhao Wang
- Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China
| | - Qunfu Yuan
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai 200090 China
| | - Yanle Guo
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai 200090 China
| | - Wenyao Guo
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai 200090 China
| | - Zhiling Xin
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai 200090 China
| | - Bingsen Zhang
- Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China
| | - Ruitang Guo
- Shanghai Engineering Research Center of Power Generation Environment Protection Shanghai University of Electric Power Shanghai 200090 China
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22
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Xu G, Guo X, Cheng X, Yu J, Fang B. A review of Mn-based catalysts for low-temperature NH 3-SCR: NO x removal and H 2O/SO 2 resistance. NANOSCALE 2021; 13:7052-7080. [PMID: 33889905 DOI: 10.1039/d1nr00248a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The development of high-efficiency catalysts is the key to the low-temperature NH3-SCR technology. The introduction of SO2 and H2O will lead to poisoning and deactivation of the catalysts, which severely limits the development and application of NH3-SCR technology. This review introduces the necessity of NOx removal, explains the mechanisms of H2O and SO2 poisoning on NH3-SCR catalysts, highlights the Mn-based catalysts of different active metals and supports and their resistance to H2O and SO2, and analyses the relationship between metal modification, selection of support and preparation method, morphology and structure design and SO2/H2O resistance. Given the current problems, this review points out the future research focus of Mn-based catalysts and also puts forward corresponding countermeasures to solve the existing problems.
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Affiliation(s)
- Guiying Xu
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
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23
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MnOx Supported on Hierarchical SAPO-34 for the Low-Temperature Selective Catalytic Reduction of NO with NH3: Catalytic Activity and SO2 Resistance. Catalysts 2021. [DOI: 10.3390/catal11030314] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The ethanol dispersion method was employed to synthesize a series of MnOx/SAPO-34 catalysts using SAPO-34 with the hierarchical pore structure as the zeolite carrier, which were prepared by facile acid treatment with citric acid. Physicochemical properties of catalysts were characterized by XRD, XPS, BET, TEM, NH3-TPD, SEM, FT-IR, Py-IR, H2-TRP and TG/DTG. NH3-SCR performances of the hierarchical MnOx/SAPO-34 catalysts were evaluated at low temperatures. Results show that citric acid etching solution at a concentration of 0.1 mol/L yielded a hierarchical MnOx/SAPO-34-0.1 catalyst with ca.15 wt.% Mn loading, exhibiting optimal catalytic activity and SO2 tolerance at low temperatures. Almost 100% NO conversion and over 90% N2 selectivity at 120 °C under a gas hourly space velocity (GHSV) of 40,000 h−1 could be obtained over this sample. Furthermore, the NO conversion was still higher than 65% when 100 ppm SO2 was introduced to the reaction gas for 4 h. These could be primarily attributed to the large specific surface area, high surface acidity concentration and abundant chemisorbed oxygen species provided by the hierarchical pore structure, which could also increase the mass transfer of the reaction gas. This finding suggests that the NH3-SCR activity and SO2 poisoning tolerance of hierarchical MnOx/SAPO-34 catalysts at low temperatures can be improved by controlling the morphology of the catalysts, which might supply a rational strategy for the design and synthesis of Mn-based SCR catalysts.
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24
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Chen Z, Wu X, Ni K, Shen H, Huang Z, Zhou Z, Jing G. Molybdenum-decorated V 2O 5–WO 3/TiO 2: surface engineering toward boosting the acid cycle and redox cycle of NH 3-SCR. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02147d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Submonolayer Mo-decorated V2O5–WO3/TiO2 provides abundant vanadia species and unsaturated V4+ species, accelerating the acid and redox cycling of low-temperature NH3-SCR.
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Affiliation(s)
- Ziyi Chen
- Department of Environmental Science & Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Xiaomin Wu
- Department of Environmental Science & Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Kaiwen Ni
- Department of Environmental Science & Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Huazhen Shen
- Department of Environmental Science & Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Zhiwei Huang
- Department of Environmental Science & Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Zuoming Zhou
- Department of Environmental Science & Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Guohua Jing
- Department of Environmental Science & Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
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25
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Chiang CY, Zhou W. Formation mechanism of Mn xCo 3−xO 4 yolk–shell structures. RSC Adv 2021; 11:29108-29114. [PMID: 35479530 PMCID: PMC9040891 DOI: 10.1039/d1ra04996h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/23/2021] [Indexed: 11/21/2022] Open
Abstract
Formation of MnxCo3−xO4 yolk–shell microspheres via a solvothermal reaction of hydrated cobalt and manganese nitrates in ethanol is investigated. Spinel nanocrystals of cobalt oxide or cobalt-rich ternary oxide preferentially develop in the system, while manganese-rich hydroxide form Mn(OH)2-type nanosheets. Instead of continuing to grow individually, the nanocrystallites and nanosheets aggregate into large microspheres due to their strong inter-particle interaction. When the proportion of Mn-rich nanosheets is high, therefore the overall density is low, dehydration of hydroxide nanosheets and a surface re-crystallisation lead to formation of a dense and rigid shell, which is separated from a solid or hollow core via a further Ostwald ripening process. The proposed formation mechanism of the yolk–shell structures based on electron microscopic studies would help us to develop yolk–shell structure based multifunctional materials. A formation mechanism of yolk–shell microspheres of Mn-rich spinel MnxCo3−xO4 is proposed based on the analyses of microstructures and local compositions.![]()
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Affiliation(s)
- Chang-Yang Chiang
- EaStChem, School of Chemistry, University of St Andrews, Fife, KY16 9ST, UK
| | - Wuzong Zhou
- EaStChem, School of Chemistry, University of St Andrews, Fife, KY16 9ST, UK
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26
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Yan Q, Hou X, Liu G, Li Y, Zhu T, Xin Y, Wang Q. Recent advances in layered double hydroxides (LDHs) derived catalysts for selective catalytic reduction of NO x with NH 3. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123260. [PMID: 32947694 DOI: 10.1016/j.jhazmat.2020.123260] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/16/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
In recent years, layered double hydroxides (LDHs) derived metal oxides as highly efficient catalysts for selective catalytic reduction of NOx with NH3 (NH3-SCR) have attracted great attention. The high dispersibility and interchangeability of cations within the brucite-like layers make LDHs an indispensable branch of catalytic materials. With the increasingly stringent and ultra-low emission regulations, there is an urgent need for highly efficient and stable low-medium temperature denitration catalysts in markets. In this contribution, we have critically summarized the recent research progress in the LDHs derived NH3-SCR catalysts, including their ability for NOx removal, N2 selectivity, active temperature window, stability and resistance to poisoning. The advantages and defects of various types of LDHs-derived catalysts are comparatively summarized, and the corresponding modification strategies are discussed. In addition, considering the importance of the catalyst's resistance to poisoning in practical applications, we discuss the poisoning mechanism of each component in flue gases, and provide the corresponding strategies to improve the poisoning resistance of catalysts. Finally, from the perspective of practical applications and operation cost, the regeneration measures of catalysts after poisoning is also discussed. We hope that this work can give timely technical guidance and valuable insights for the applications of LDHs materials in the field of NOx control.
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Affiliation(s)
- Qinghua Yan
- Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Xiangting Hou
- Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Guocheng Liu
- Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Yuran Li
- Research Center for Process Pollution Control, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Tingyu Zhu
- Research Center for Process Pollution Control, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yanjun Xin
- Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, PR China.
| | - Qiang Wang
- College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, PR China.
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27
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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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28
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Wang N, Xu Z, Luo T, Yan Z, Jin M, Shi L. Pt Anchored on Mn(Co)CO
3
/MnCo
2
O
4
Heterostructure for Complete Oxidation of Formaldehyde at Room Temperature. ChemistrySelect 2020. [DOI: 10.1002/slct.202002870] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nenghuan Wang
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
| | - Zhihua Xu
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
- School of Chemistry and Chemical Engineering Wuhan University of Science and Technology Wuhan 430081 China
| | - Tingting Luo
- Materials Analysis Center Wuhan University of Technology Wuhan 430070 China
| | - Zhaoxiong Yan
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
| | - Mei Jin
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
| | - Ling Shi
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
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29
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Zhang N, He H, Wang D, Li Y. Challenges and opportunities for manganese oxides in low-temperature selective catalytic reduction of NOx with NH3: H2O resistance ability. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121464] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Yang C, Tang X, Yi H, Gao F, Zhao S, Zhang R, Zhu W. Comparison of Selective Catalytic Reduction Performance of Mn–Co Bi‐Metal Oxides Prepared by Different Methods. ChemistrySelect 2020. [DOI: 10.1002/slct.202001748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chen Yang
- Department of Environmental Engineering School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 PR China
| | - Xiaolong Tang
- Department of Environmental Engineering School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 PR China
| | - Honghong Yi
- Department of Environmental Engineering School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 PR China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083 PR China
| | - Fengyu Gao
- Department of Environmental Engineering School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 PR China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083 PR China
| | - Shunzheng Zhao
- Department of Environmental Engineering School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 PR China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083 PR China
| | - Runcao Zhang
- Department of Environmental Engineering School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 PR China
| | - Wenjuan Zhu
- Department of Environmental Engineering School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing 100083 PR China
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31
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Comparative study of La1–Ce MnO3+ perovskites and Mn–Ce mixed oxides for NO catalytic oxidation. J RARE EARTH 2020. [DOI: 10.1016/j.jre.2020.03.003] [Citation(s) in RCA: 6] [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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32
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Wen S, Ma X, Liu H, Chen G, Wang H, Deng G, Zhang Y, Song W, Zhao B, Ozaki Y. Accurate Monitoring Platform for the Surface Catalysis of Nanozyme Validated by Surface-Enhanced Raman-Kinetics Model. Anal Chem 2020; 92:11763-11770. [DOI: 10.1021/acs.analchem.0c01886] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Sisi Wen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Xiaowei Ma
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Hao Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Gang Chen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - He Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Gaoqiang Deng
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Qianjin Street 2699, Changchun 130012, P. R. China
| | - Yuantao Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Qianjin Street 2699, Changchun 130012, P. R. China
| | - Wei Song
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Yukihiro Ozaki
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 660-1337, Japan
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33
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Gholami Z, Luo G, Gholami F, Yang F. Recent advances in selective catalytic reduction of NOx by carbon monoxide for flue gas cleaning process: a review. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2020. [DOI: 10.1080/01614940.2020.1753972] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Zahra Gholami
- Unipetrol Centre of Research and Education, Litvínov, Czech Republic
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Guohua Luo
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Fatemeh Gholami
- New Technologies - Research Centre, University of West Bohemia, Engineering of Special Materials, Plzeň, Czech Republic
| | - Fan Yang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, China
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34
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Li Z, Lian X, Wu M, Zheng F, Gao Y, Niu H. A novel self-assembled-derived 1D MnO2@Co3O4 composite as a high-performance Li-ion storage anode material. Dalton Trans 2020; 49:6644-6650. [DOI: 10.1039/d0dt00980f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Manganese dioxide (MnO2) is a high-performance anodic material and applied widely in lithium-ion batteries (LIBs).
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Affiliation(s)
- Zongtang Li
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials
- Energy Materials and Devices Key Lab of Anhui Province for Photoelectric Conversion
- College of Chemistry and Chemical Engineering
- Anhui University
- Hefei 230039
| | - Xiao Lian
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials
- Energy Materials and Devices Key Lab of Anhui Province for Photoelectric Conversion
- College of Chemistry and Chemical Engineering
- Anhui University
- Hefei 230039
| | - Mingzai Wu
- School of Physics and Materials Science
- Anhui University
- Hefei 230039
- China
| | - Fangcai Zheng
- Institutes of Physical Science and information Technology
- Anhui University
- Hefei 230039
- China
| | - Yuanhao Gao
- Key Lab Micronano Mat Energy Storage
- Xuchang University
- Xuchang 461000
- China
| | - Helin Niu
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials
- Energy Materials and Devices Key Lab of Anhui Province for Photoelectric Conversion
- College of Chemistry and Chemical Engineering
- Anhui University
- Hefei 230039
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35
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Zheng K, Zhou Z, Wang Y, Xin Z, Zhao Z, Zhang J, Bo T, Lin T, Zhang B, Shao L. Ultralow loading of nanostructured Mn species onto two-dimensional Co 3O 4 nanosheets for selective catalytic reduction of NO x with NH 3. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00599a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report a facile method for dispersing Mn species onto two-dimensional Co3O4 nanosheets at the nanoscale for the selective catalytic reduction (SCR) of NOx with NH3.
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Affiliation(s)
- Kang Zheng
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- Shanghai University of Electric Power
- Shanghai 200090
- China
| | - Zhiyuan Zhou
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- Shanghai University of Electric Power
- Shanghai 200090
- China
| | - Yongzhao Wang
- Shenyang National Laboratory for Materials Science Institute of Metal Research
- Chinese Academy of Sciences
- Shenyang 110016
- China
| | - Zhiling Xin
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- Shanghai University of Electric Power
- Shanghai 200090
- China
| | - Zhiliang Zhao
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- Shanghai University of Electric Power
- Shanghai 200090
- China
| | - Jing Zhang
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- Shanghai University of Electric Power
- Shanghai 200090
- China
| | - Tingting Bo
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- Shanghai University of Electric Power
- Shanghai 200090
- China
| | - Tsungwu Lin
- Department of Chemistry
- Tunghai University
- Taichung City 40704
- Taiwan
| | - Bingsen Zhang
- Shenyang National Laboratory for Materials Science Institute of Metal Research
- Chinese Academy of Sciences
- Shenyang 110016
- China
| | - Lidong Shao
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- Shanghai University of Electric Power
- Shanghai 200090
- China
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36
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Li J, Zhang Y, Li L, Wang Y, Zhang L, Zhang B, Wang F, Li B, Yu XY. Formation of uniform porous yolk-shell MnCo 2O 4 microrugby balls with enhanced electrochemical performance for lithium storage and the oxygen evolution reaction. Dalton Trans 2019; 48:17022-17028. [PMID: 31693037 DOI: 10.1039/c9dt03609a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mixed transition metal oxides with favorable electrochemical properties are promising electrode materials in energy storage and conversion systems. In this work, uniform porous yolk-shell MnCo2O4 (denoted as YSM-MCO) microrugby balls have been synthesized by simple annealing treatment of metal carbonates with a microrugby ball shape in air. Benefiting from the desired porous structure and composition, the as-synthesized YSM-MCO exhibits enhanced electrochemical performance when investigated as anode materials for lithium-ion batteries and electrocatalysts for the oxygen evolution reaction. The YSM-MCO demonstrates remarkable lithium storage properties with a good cycling stability (94% capacity retention over 200 cycles at 0.5 A g-1) and superior rate capability (414 mA h g-1 at 5 A g-1). In addition, the YSM-MCO also exhibits better OER activity than most of the reported MnCo2O4-based electrocatalysts.
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Affiliation(s)
- Jia Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Application, Ministry of Education, Huaibei Normal University, Huaibei 235000, P. R. China.
| | - Yongxing Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Application, Ministry of Education, Huaibei Normal University, Huaibei 235000, P. R. China.
| | - Li Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Application, Ministry of Education, Huaibei Normal University, Huaibei 235000, P. R. China.
| | - Yanming Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Application, Ministry of Education, Huaibei Normal University, Huaibei 235000, P. R. China.
| | - Lei Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Application, Ministry of Education, Huaibei Normal University, Huaibei 235000, P. R. China.
| | - Baojie Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Application, Ministry of Education, Huaibei Normal University, Huaibei 235000, P. R. China.
| | - Fei Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Application, Ministry of Education, Huaibei Normal University, Huaibei 235000, P. R. China.
| | - Bing Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Application, Ministry of Education, Huaibei Normal University, Huaibei 235000, P. R. China.
| | - Xin-Yao Yu
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China. and School of Materials Science & Engineering, Zhejiang University, Hangzhou 310027, P. R. China
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37
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Du Y, Liu L, Feng Y, Yang B, Wu X. Enhancement of NH 3-SCR performance of LDH-based MMnAl (M = Cu, Ni, Co) oxide catalyst: influence of dopant M. RSC Adv 2019; 9:39699-39708. [PMID: 35541372 PMCID: PMC9076116 DOI: 10.1039/c9ra08391j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/14/2019] [Indexed: 12/28/2022] Open
Abstract
Transition metal (Cu, Ni, Co) doped MnAl mixed oxide catalysts were prepared through a novel method involving the calcination of hydrotalcite precursors for the selective catalytic reduction of NO x with NH3 (NH3-SCR). The effects of transition metal modification were confirmed by means of XRD, BET, TEM, XPS, NH3-TPD, and H2-TPR measurements. Experimental results evidenced that CoMnAl-LDO presented the highest NO x removal efficiency of over 80% and a relatively high N2 selectivity of over 88% in a broad working temperature range (150-300 °C) among all the samples studied. Moreover, the CoMnAl-LDO sample possessed better stability and excellent resistance to H2O and SO2. The reasons for such results could be associated with the good dispersion of Co3O4 and MnO x , which could consequently provide optimum redox behavior, plentiful acid sites, and strong NO x adsorption ability. Furthermore, dynamics calculations verified the meaningful reduction in apparent activation energy (E a) for the CoMnAl-LDO sample, which is in agreement with the DeNO x activity.
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Affiliation(s)
- Yali Du
- College of Chemistry and Chemical Engineering, Jinzhong University Jinzhong 030619 PR China
| | - Lili Liu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology Taiyuan 030024 PR China +86-351-6018528
| | - Yalin Feng
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology Taiyuan 030024 PR China +86-351-6018528
| | - Baoshuan Yang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology Taiyuan 030024 PR China +86-351-6018528
| | - Xu Wu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology Taiyuan 030024 PR China +86-351-6018528
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38
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Abstract
The importance of the low-temperature selective catalytic reduction (LT-SCR) of NOx by NH3 is increasing due to the recent severe pollution regulations being imposed around the world. Supported and mixed transition metal oxides have been widely investigated for LT-SCR technology. However, these catalytic materials have some drawbacks, especially in terms of catalyst poisoning by H2O or/and SO2. Hence, the development of catalysts for the LT-SCR process is still under active investigation throughout seeking better performance. Extensive research efforts have been made to develop new advanced materials for this technology. This article critically reviews the recent research progress on supported transition and mixed transition metal oxide catalysts for the LT-SCR reaction. The review covered the description of the influence of operating conditions and promoters on the LT-SCR performance. The reaction mechanism, reaction intermediates, and active sites are also discussed in detail using isotopic labelling and in situ FT-IR studies.
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39
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MoO₃-Doped MnCo₂O₄ Microspheres Consisting of Nanosheets: An Inexpensive Nanostructured Catalyst to Hydrolyze Ammonia Borane for Hydrogen Generation. NANOMATERIALS 2018; 9:nano9010021. [PMID: 30586914 PMCID: PMC6359025 DOI: 10.3390/nano9010021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/12/2018] [Accepted: 12/16/2018] [Indexed: 11/23/2022]
Abstract
Production of hydrogen by catalytically hydrolyzing ammonia borane (AB) has attracted extensive attention in the field of catalysis and energy. However, it is still a challenge to develop a both inexpensive and active catalyst for AB hydrolysis. In this work, we designed a series of MoO3-doped MnCo2O4 (x) catalysts, which were fabricated by a hydrothermal process. The morphology, crystalline structure, and chemical components of the catalysts were systematically analyzed. The catalytic behavior of the catalyst in AB hydrolysis was investigated. Among these catalysts, MoO3-doped MnCo2O4 (0.10) microspheres composed of nanosheets exhibited the highest catalytic activity. The apparent activation energy is 34.24 kJ mol−1 and the corresponding turnover frequency is 26.4 molhydrogen min−1 molcat−1. Taking into consideration the low cost and high performance, the MoO3-doped MnCo2O4 (0.10) microspheres composed of nanosheets represent a promising catalyst to hydrolyze AB for hydrogen production.
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40
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Duraisamy V, Palanivel S, Thangamuthu R, Kumar SMS. KIT‐6 Three Dimensional Template Derived Mesoporous Carbon for Oxygen Reduction Reaction: Effect of Template Removal on Catalytic Activity. ChemistrySelect 2018. [DOI: 10.1002/slct.201802539] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Velu Duraisamy
- Materials Electrochemistry DivisionCSIR-Central Electrochemical Research Institute Karaikudi, Tamil Nadu 630 003 India
- Academy of Scientific and Innovative Research (AcSIR)CSIR-Central Electrochemical Research Institute Karaikudi, Tamil Nadu 630 003 India
| | - Soundarrajan Palanivel
- Materials Electrochemistry DivisionCSIR-Central Electrochemical Research Institute Karaikudi, Tamil Nadu 630 003 India
| | - Rangasamy Thangamuthu
- Materials Electrochemistry DivisionCSIR-Central Electrochemical Research Institute Karaikudi, Tamil Nadu 630 003 India
- Academy of Scientific and Innovative Research (AcSIR)CSIR-Central Electrochemical Research Institute Karaikudi, Tamil Nadu 630 003 India
| | - Sakkarapalayam Murugesan Senthil Kumar
- Materials Electrochemistry DivisionCSIR-Central Electrochemical Research Institute Karaikudi, Tamil Nadu 630 003 India
- Academy of Scientific and Innovative Research (AcSIR)CSIR-Central Electrochemical Research Institute Karaikudi, Tamil Nadu 630 003 India
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41
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Hu M, Yao Z, Li L, Tsou YH, Kuang L, Xu X, Zhang W, Wang X. Boron-doped graphene nanosheet-supported Pt: a highly active and selective catalyst for low temperature H 2-SCR. NANOSCALE 2018; 10:10203-10212. [PMID: 29786726 DOI: 10.1039/c8nr01807c] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A series of boron-doped graphene-supported Pt (Pt/BG) nanosheets were designed and synthesized using a one-step facile hydrothermal method. ICP, XPS, and TPD results confirmed that boron atoms were successfully embedded into the graphene matrix. The selective catalytic reduction of nitric oxide with hydrogen (H2-SCR) was tested over Pt/BG catalysts. The multi-roles of doped-boron were investigated by Raman, BET, CO-chemisorption, H2-TPD, XPS, and NO-TPD. Boron doping led to a higher dispersion and smaller size of Pt nanoparticles, facilitated hydrogen spillover, promoted more metallic Pt formation, and increased both H2 and NO chemisorption, which were attributed to an enhanced Pt nucleation rate over doped-boron, electron donation from boron to Pt, and extra chemisorption sites. The reaction performances (conversion 94.7%, selectivity 90.3%, and TOF 0.092 s-1) were greatly promoted attributing to a bifunctional catalytic mechanism. This work paves the way to modify the structure and tune the chemisorption ability of graphene-based catalysts, and provides novel insights for designing high performance catalysts.
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Affiliation(s)
- Maocong Hu
- Department of Chemical and Materials Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA.
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42
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Shi JW, Fan Z, Gao C, Gao G, Wang B, Wang Y, He C, Niu C. Mn−Co Mixed Oxide Nanosheets Vertically Anchored on H2
Ti3
O7
Nanowires: Full Exposure of Active Components Results in Significantly Enhanced Catalytic Performance. ChemCatChem 2018. [DOI: 10.1002/cctc.201800227] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Zhaoyang Fan
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chen Gao
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Ge Gao
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Baorui Wang
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Yao Wang
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chi He
- Department of Environmental Science and Engineering; School of Energy and Power Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
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43
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Sun X, Guo RT, Li MY, Sun P, Pan WG, Liu SM, Liu J, Liu SW. The promotion effect of Fe on CeZr2O
x
catalyst for the low-temperature SCR of NO
x
by NH3. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3318-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Sulfur and Water Resistance of Mn-Based Catalysts for Low-Temperature Selective Catalytic Reduction of NOx: A Review. Catalysts 2018. [DOI: 10.3390/catal8010011] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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45
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Yan Q, Chen S, Qiu L, Gao Y, O'Hare D, Wang Q. The synthesis of CuyMnzAl1−zOx mixed oxide as a low-temperature NH3-SCR catalyst with enhanced catalytic performance. Dalton Trans 2018; 47:2992-3004. [DOI: 10.1039/c7dt02000g] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new type of low-temperature selective catalytic reduction (SCR) catalyst, CuyMnzAl1−zOx, derived from layered double hydroxides is presented in this contribution.
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Affiliation(s)
- Qinghua Yan
- College of Environmental Science and Engineering
- Beijing Forestry University
- Beijing 100083
- P. R. China
| | - Sining Chen
- College of Environmental Science and Engineering
- Beijing Forestry University
- Beijing 100083
- P. R. China
| | - Lei Qiu
- College of Environmental Science and Engineering
- Beijing Forestry University
- Beijing 100083
- P. R. China
| | - Yanshan Gao
- College of Environmental Science and Engineering
- Beijing Forestry University
- Beijing 100083
- P. R. China
| | - Dermot O'Hare
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Qiang Wang
- College of Environmental Science and Engineering
- Beijing Forestry University
- Beijing 100083
- P. R. China
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46
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A Review on Selective Catalytic Reduction of NOx by NH3 over Mn–Based Catalysts at Low Temperatures: Catalysts, Mechanisms, Kinetics and DFT Calculations. Catalysts 2017. [DOI: 10.3390/catal7070199] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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47
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Cai S, Liu J, Zha K, Li H, Shi L, Zhang D. A general strategy for the in situ decoration of porous Mn-Co bi-metal oxides on metal mesh/foam for high performance de-NO x monolith catalysts. NANOSCALE 2017; 9:5648-5657. [PMID: 28422205 DOI: 10.1039/c6nr09917c] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Owing to their advantages of strong mechanical stability, plasticity, thermal conductivity and mass transfer ability, metal foam or meshes are considered promising monolith supports for de-NOx application. In this work, we developed a facile method for the decoration of porous Mn-Co bi-metal oxides on Fe meshes. The block-like structure was derived from in situ coating, and simultaneous nucleation and growth of the Mn-Co hydroxide precursor, while the porous Mn-Co oxides were formed via the calcination process. Moreover, the decoration of the high-purity Co2MnO4 spinel could lead to enhanced reducibility and adsorption behaviors, which are crucial to the catalytic process. Of note is the fact that the Fe mesh used in the synthesis procedure could be substituted by various metal supports including Ti mesh, Cu foam and Ni foam. Driven by the above motivations, metal supports decorated with Mn-Co oxides were evaluated as monolith de-NOx catalysts for the first time. Inspiringly, these catalysts demonstrate outstanding low-temperature catalytic activity, desirable stability and excellent H2O resistance. This work might open up a new path for the design and development of high performance de-NOx monolith catalysts.
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Affiliation(s)
- Sixiang Cai
- Research Center of Nano Science and Technology, Shanghai University, Shanghai 200444, China.
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48
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Sun P, Guo RT, Liu SM, Wang SX, Pan WG, Li MY, Liu SW, Liu J, Sun X. Enhancement of the low-temperature activity of Ce/TiO 2 catalyst by Sm modification for selective catalytic reduction of NOx with NH 3. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2016.12.025] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Gao M, Lu X, Chi M, Chen S, Wang C. Fabrication of oxidase-like hollow MnCo2O4 nanofibers and their sensitive colorimetric detection of sulfite and l-cysteine. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00458c] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hollow MnCo2O4 nanofibers as efficient oxidase mimics for sensitive detection of sulfite and l-cysteine have been developed.
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Affiliation(s)
- Mu Gao
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Xiaofeng Lu
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Maoqiang Chi
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Sihui Chen
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Ce Wang
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
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50
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Liu J, Kang L, Li H, Maitarad P, Zhang J, Shi L, Zhang D. Mn–Fe bi-metal oxides in situ created on metal wire mesh as monolith catalysts for selective catalytic reduction of NO with NH3. RSC Adv 2017. [DOI: 10.1039/c7ra05007k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mn–Fe bi-metal oxides in situ created on a metal wire mesh are demonstrated as high-performance deNOx monolith catalysts.
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Affiliation(s)
- Jie Liu
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Lin Kang
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Hongrui Li
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Phornphimon Maitarad
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Jianping Zhang
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Liyi Shi
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
| | - Dengsong Zhang
- Research Center of Nano Science and Technology
- Shanghai University
- Shanghai 200444
- China
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