1
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Luo J, Xu S, Xu H, Zhang Z, Chen X, Li M, Tie Y, Zhang H, Chen G, Jiang C. Overview of mechanisms of Fe-based catalysts for the selective catalytic reduction of NO x with NH 3 at low temperature. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:14424-14465. [PMID: 38291211 DOI: 10.1007/s11356-024-32113-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/17/2024] [Indexed: 02/01/2024]
Abstract
With the increasingly stringent control of NOx emissions, NH3-SCR, one of the most effective de-NOx technologies for removing NOx, has been widely employed to eliminate NOx from automobile exhaust and industrial production. Researchers have favored iron-based catalysts for their low cost, high activity, and excellent de-NOx performance. This paper takes a new perspective to review the research progress of iron-based catalysts. The influence of the chemical form of single iron-based catalysts on their performance was investigated. In the section on composite iron-based catalysts, detailed reviews were conducted on the effects of synergistic interactions between iron and other elements on catalytic performance. Regarding loaded iron-based catalysts, the catalytic performance of iron-based catalysts on different carriers was systematically examined. In the section on iron-based catalysts with novel structures, the effects of the morphology and crystallinity of nanomaterials on catalytic performance were analyzed. Additionally, the reaction mechanism and poisoning mechanism of iron-based catalysts were elucidated. In conclusion, the paper delved into the prospects and future directions of iron-based catalysts, aiming to provide ideas for the development of iron-based catalysts with better application prospects. The comprehensive review underscores the significance of iron-based catalysts in the realm of de-NOx technologies, shedding light on their diverse forms and applications. The hope is that this paper will serve as a valuable resource, guiding future endeavors in the development of advanced iron-based catalysts.
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Affiliation(s)
- Jianbin Luo
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Song Xu
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Hongxiang Xu
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Zhiqing Zhang
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China.
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China.
| | - Xiaofeng Chen
- Guangxi Automobile Group Co., Ltd, Liuzhou, 545007, China
| | - Mingsen Li
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Yuanhao Tie
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Haiguo Zhang
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Guiguang Chen
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Chunmei Jiang
- Institute of the New Energy and Energy-Saving & Emission-Reduction, Guangxi University of Science and Technology, Liuzhou, 545006, China
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Lu M, Gao F, Tan Y, Yi H, Gui Y, Xu Y, Wang Y, Zhou Y, Tang X, Chen L. Knowledge-Driven Experimental Discovery of Ce-Based Metal Oxide Composites for Selective Catalytic Reduction of NO x with NH 3 through Interpretable Machine Learning. ACS APPLIED MATERIALS & INTERFACES 2024; 16:3593-3604. [PMID: 38215440 DOI: 10.1021/acsami.3c18490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
Mining the scientific literature, combined with data-driven methods, may assist in the identification of optimized catalysts. In this paper, we employed interpretable machine learning to discover ternary metal oxides capable of selective catalytic reduction of nitrogen oxides with ammonia (NH3-SCR). Specifically, we devised a machine learning framework utilizing extreme gradient boosting (XGB), identified for its optimal performance, and SHapley Additive exPlanations (SHAP) to evaluate a curated database of 5654 distinct metal oxide composite catalytic systems containing cerium (Ce) element, with records of catalyst composition and preparation and reaction conditions. By virtual screening, this framework precisely pinpointed a CeO2-MoO3-Fe2O3 catalyst with superior NOx conversion, N2 selectivity, and resistance to H2O and SO2, as confirmed by empirical evaluations. Subsequent characterization affirmed its favorable structural, chemical bulk properties and reaction mechanism. Demonstrating the efficacy of combining knowledge-driven techniques with experimental validation and analysis, our strategy charts a course for analogous catalyst discoveries.
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Affiliation(s)
- Muyu Lu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Fengyu Gao
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Yiran Tan
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Honghong Yi
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Yang Gui
- Institute of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Yan Xu
- Institute of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Ya Wang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Yuansong Zhou
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Xiaolong Tang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Linjiang Chen
- School of Chemistry and School of Computer Science, University of Birmingham, Birmingham B15 2TT, U.K
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3
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Hu F, Wang D, Ma X, Hu T, Yue Y, Tang W, Wu P, Tong T, Peng W. Concurrent Dual-Contrast Enhancement Using Fe 3O 4 Nanoparticles to Achieve a CEST Signal Controllability. ACS OMEGA 2023; 8:24153-24164. [PMID: 37457473 PMCID: PMC10339402 DOI: 10.1021/acsomega.2c07000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/13/2023] [Indexed: 07/18/2023]
Abstract
Traditional T2 magnetic resonance imaging (MRI) contrast agents have defects inherent to negative contrast agents, while chemical exchange saturation transfer (CEST) contrast agents can quantify substances at trace concentrations. After reaching a certain concentration, iron-based contrast agents can "shut down" CEST signals. The application range of T2 contrast agents can be widened through a combination of CEST and T2 contrast agents, which has promising application prospects. The purpose of this study is to develop a T2 MRI negative contrast agent with a controllable size and to explore the feasibility of dual contrast enhancement by combining T2 with CEST contrast agents. The study was carried out in vitro with HCT-116 human colon cancer cells. A GE SIGNA Pioneer 3.0 T medical MRI scanner was used to acquire CEST images with different saturation radio-frequency powers (1.25/2.5/3.75/5 μT) by 2D spin echo-echo planar imaging (SE-EPI). Magnetic resonance image compilation (MAGiC) was acquired by a multidynamic multiecho 2D fast spin-echo sequence. The feasibility of this dual-contrast enhancement method was assessed by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, dynamic light scattering, ζ potential analysis, inductively coupled plasma, X-ray photoelectron spectroscopy, X-ray powder diffraction, vibrating-sample magnetometry, MRI, and a Cell Counting Kit-8 assay. The association between the transverse relaxation rate r2 and the pH of the iron-based contrast agents was analyzed by linear fitting, and the linear relationship between the CEST effect in different B1 fields and pH was analyzed by the ratio method. Fe3O4 nanoparticles (NPs) with a mean particle size of 82.6 ± 22.4 nm were prepared by a classical process, and their surface was successfully modified with -OH active functional groups. They exhibited self-aggregation in an acidic environment. The CEST effect was enhanced as the B1 field increased, and an in vitro pH map was successfully plotted using the ratio method. Fe3O4 NPs could stably serve as reference agents at different pH values. At a concentration of 30 μg/mL, Fe3O4 NPs "shut down" the CEST signals, but when the concentration of Fe3O4 NPs was less than 10 μg/mL, the two contrast agents coexisted. The prepared Fe3O4 NPs had almost no toxicity, and when their concentration rose to 200 μg/mL at pH 6.5 or 7.4, they did not reach the half-maximum inhibitory concentration (IC50). Fe3O4 magnetic NPs with a controllable size and no toxicity were successfully synthesized. By combining Fe3O4 NPs with a CEST contrast agent, the two contrast agents could be imaged simultaneously; at higher concentrations, the iron-based contrast agent "shut down" the CEST signal. An in vitro pH map was successfully plotted by the ratio method. CEST signal inhibition can be used to realize the pH mapping of solid tumors and the identification of tumor active components, thus providing a new imaging method for tumor efficacy evaluation.
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Affiliation(s)
- Feixiang Hu
- Department
of Radiology, Fudan University Shanghai Cancer Center, Department
of Oncology, Shanghai Medical College, Fudan
University, Shanghai, People’s Republic of China 200032
| | - Dan Wang
- Department
of Ultrasound, Shanghai Municipal Hospital of Traditional Chinese
Medicine, Shanghai University of Traditional
Chinese Medicine, Shanghai, People’s Republic of China. 200071
| | - Xiaowen Ma
- Department
of Radiology, Fudan University Shanghai Cancer Center, Department
of Oncology, Shanghai Medical College, Fudan
University, Shanghai, People’s Republic of China 200032
| | - Tingdan Hu
- Department
of Radiology, Fudan University Shanghai Cancer Center, Department
of Oncology, Shanghai Medical College, Fudan
University, Shanghai, People’s Republic of China 200032
| | - Yali Yue
- Department
of Radiology, Children’s Hospital
of Fudan University, Shanghai, People’s Republic of China 200000
| | - Wei Tang
- Department
of Radiology, Fudan University Shanghai Cancer Center, Department
of Oncology, Shanghai Medical College, Fudan
University, Shanghai, People’s Republic of China 200032
| | - PuYe Wu
- GE
Healthcare, Beijing, People’s Republic of China 100176
| | - Tong Tong
- Department
of Radiology, Fudan University Shanghai Cancer Center, Department
of Oncology, Shanghai Medical College, Fudan
University, Shanghai, People’s Republic of China 200032
| | - Weijun Peng
- Department
of Radiology, Fudan University Shanghai Cancer Center, Department
of Oncology, Shanghai Medical College, Fudan
University, Shanghai, People’s Republic of China 200032
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4
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Chen J, Wang Y, Liu Z. Red mud-based catalysts for the catalytic removal of typical air pollutants: A review. J Environ Sci (China) 2023; 127:628-640. [PMID: 36522092 DOI: 10.1016/j.jes.2022.06.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 06/19/2022] [Accepted: 06/21/2022] [Indexed: 06/17/2023]
Abstract
Red mud, as a solid waste produced during the alumina production, can cause severe eco-environmental pollution and health risks to human. Therefore, the resourcing of this type of solid waste is an effective way for the sustainable development. This paper reviews the recent progress on red mud-based catalysts for the removal of typical air pollutants, such as the catalytic reduction of nitrogen oxides (NOx) by NH3 (NH3-SCR) and the catalytic oxidation of CO and volatile organic compounds (VOCs). The factors influencing the catalytic performance and the structure-activity relationship have been discussed. Future prospects and directions for the development of such catalysts are also proposed. This review would benefit for the high value-added utilizations of red mud in mitigating atmospheric pollutions.
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Affiliation(s)
- Jiawei Chen
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yao Wang
- 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 Environmental 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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5
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Hu Y, Ding S, Tan C, Wu P, Li G, Wang S, Yang H, Zhang Y. Three-dimensionally ordered macroporous (3DOM) structure promoted the activity and H2O poisoning resistance of CeMn/3DOM-TiO2 catalyst in NH3-SCR. J RARE EARTH 2023. [DOI: 10.1016/j.jre.2023.02.005] [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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6
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Yu H, Zhang Y, Quan H, Zhu D, Liao S, Gao C, Yang R, Zhang Z, Ma Q. Simultaneous catalytic oxidation of Hg 0 and AsH 3 over Fe-Ce co-doped TiO 2 catalyst under low temperature and reducing atmosphere. RSC Adv 2023; 13:3958-3970. [PMID: 36756548 PMCID: PMC9890977 DOI: 10.1039/d2ra07376e] [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: 11/20/2022] [Accepted: 01/12/2023] [Indexed: 01/29/2023] Open
Abstract
The Fe-Ce bimetal oxide-doped titanium dioxide composite was synthesized by the sol-gel method and the performance of the catalyst was investigated for the removal of Hg0 and AsH3 from yellow phosphorus flue gas under different conditions. Brunauer-Emmett-Teller (BET) analysis, high-resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were used to characterize the crystal structure and morphology of the structure, and the mechanisms for removing Hg0 and AsH3 from flue gas by catalytic oxidation were deduced. The results showed that the optimal calcination temperature of the Fe5Ce5Ti catalyst was 500 °C, and the optimal pH of the sol was 6. Under these conditions, the penetration adsorption capacity of the Fe5Ce5Ti catalyst for the removal of AsH3 and Hg0 was 385.5 mg g-1 and 2.178 mg g-1, respectively. According to characterization analysis, Fe and Ce are the main active components in the removal of Hg0 and AsH3, and the mixed oxides of Fe and Ce have a synergistic effect on the surface of the mixed oxide-doped catalyst, which can improve the dispersion of the active component on the surface of the catalyst, and then improve the removal efficiency of Hg0 and AsH3.
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Affiliation(s)
- Huijuan Yu
- College of Agriculture and Biological Science, Dali University No. 2, Hong Sheng Road Dali 671000 China +86 15687786161.,Key Laboratory of Ecological Microbial Remediation Technology of Yunnan Higher Education Institutes, Dali University Dali 671000 China
| | - Yingjie Zhang
- College of Agriculture and Biological Science, Dali University No. 2, Hong Sheng Road Dali 671000 China +86 15687786161.,Key Laboratory of Ecological Microbial Remediation Technology of Yunnan Higher Education Institutes, Dali University Dali 671000 China
| | - Hong Quan
- College of Agriculture and Biological Science, Dali University No. 2, Hong Sheng Road Dali 671000 China +86 15687786161.,Key Laboratory of Ecological Microbial Remediation Technology of Yunnan Higher Education Institutes, Dali University Dali 671000 China
| | - Dan Zhu
- College of Agriculture and Biological Science, Dali University No. 2, Hong Sheng Road Dali 671000 China +86 15687786161
| | - Shaohua Liao
- College of Agriculture and Biological Science, Dali University No. 2, Hong Sheng Road Dali 671000 China +86 15687786161
| | - Cuiping Gao
- College of Agriculture and Biological Science, Dali University No. 2, Hong Sheng Road Dali 671000 China +86 15687786161
| | - Rongbin Yang
- College of Engineering, Dali University Dali 671000 China
| | - Zhenyu Zhang
- College of Engineering, Dali University Dali 671000 China
| | - Qiang Ma
- School of Architecture and Civil Engineering, Chengdu University Chengdu 610106 China
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7
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Geng X, Xie C, Zhu B, Chen J, Sun Y, Xu M. Calcium poisoning mechanism on the selective catalytic reduction of NO x by ammonia over the γ-Fe 2O 3 (001) surface. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:88256-88268. [PMID: 35831648 DOI: 10.1007/s11356-022-21912-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
γ-Fe2O3 has an excellent low-temperature selective catalytic reduction (SCR) deNOx performance, but its resistance to alkaline earth metal calcium (Ca) is poor. In particular, the detailed mechanism of Ca poisoning on the γ-Fe2O3 catalyst at the atomic level is not clear. Hence, the density functional theory method was used in this research to investigate the influence mechanism of Ca poisoning on the NH3-SCR over the γ-Fe2O3 catalyst surface. The findings reveal that NH3, NO, and O2 molecules can bind to the γ-Fe2O3 (001) surface to generate coordinated ammonia, monodentate nitroso, and adsorption oxygen species, respectively. The main active site is Fe1-top. For the γ-Fe2O3 with Ca poisoning, the Ca atom has a high adsorption energy on the surface of γ-Fe2O3 (001), which covers the catalyst surface and reduces the active sites. The presence of Ca atom decreases the adsorption performance of NH3, while slightly improving the NO and O2 adsorption. In particular, the Ca atom restrains the NH3 activation and NH2 formation, which is detrimental to the NH3-SCR process.
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Affiliation(s)
- Xuan Geng
- School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou, Jiangsu, 213164, People's Republic of China
| | - Chaoyue Xie
- School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou, Jiangsu, 213164, People's Republic of China
| | - Baozhong Zhu
- School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou, Jiangsu, 213164, People's Republic of China
| | - Jiuyu Chen
- School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou, Jiangsu, 213164, People's Republic of China
| | - Yunlan Sun
- School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou, Jiangsu, 213164, People's Republic of China.
| | - Minggao Xu
- Center for Advanced Combustion and Energy, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China
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8
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Quantum chemistry study on the formation of OH radical for NO oxidation by heterogeneous Fenton reaction. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Zhou K, Hu M, Zhao T, Wang M, Cui B, Lai H, Shao Z, Li S, Zhao M. Sn2+ Regulated Thermal Stability of the Cerium Oxide Lattice During Soot Combustion. Catal Letters 2022. [DOI: 10.1007/s10562-022-04072-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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10
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Enhanced Oxygen Vacancies in Ce-Doped SnO2 Nanofibers for Highly Efficient Soot Catalytic Combustion. Catalysts 2022. [DOI: 10.3390/catal12060596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In this paper, cerium was incorporated into polyhydroxyltriacetictin (PHTES) using the sol-gel method combined with electrospinning technology to prepare a series of composite oxide fiber catalysts SnxCe1−xO2 in different proportions. The structures and soot catalytic activities of SnxCe1−xO2 fibers were studied under loose contact conditions. When Ce entered the crystal lattice of SnO2, the structural symmetry of the SnO2 was destroyed, which inhibited the crystallization and grain growth of the fiber, and fiber catalysts with a larger specific surface area were obtained. Moreover, the introduction of Ce improved the number of oxygen vacancies and redox ability of the catalyst, thus promoting the catalytic activity of the catalyst for soot particles. In particular, among them, the Sn0.7Ce0.3O2 fiber catalysts had the strongest catalytic oxidation ability regarding soot particles and could oxidize soot particles at a lower temperature and faster catalytic rate. The results of the temperature-programmed oxidation of Sn0.7Ce0.3O2 fiber catalyst, conducted three times under the same conditions, were basically consistent, indicating that the experimental results are reliable and repeatable. In addition, the Sn0.7Ce0.3O2 fiber catalyst showed good cycle stability.
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11
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Dong X, Chen P, Chang X, Gao J, Ren X, Li K, Li Z, Lu Y. Low-temperature selective catalytic reduction of NOx with NH3 over Ce-modified (Co, Mn)3O4 hollow porous microspheres. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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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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13
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Bae WB, Kim DY, Byun SW, Hazlett M, Yoon DY, Jung C, Kim CH, Kang SB. Emission of NH3 and N2O during NO reduction over commercial aged three-way catalyst (TWC): Role of individual reductants in simulated exhausts. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2021.100222] [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] Open
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14
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Mu Y, Huang X, Tang Z, Wang Q. Ordered mesoporous TiO 2/SBA-15 confined Ce xW y catalysts for selective catalytic reduction of NO using NH 3. NEW J CHEM 2022. [DOI: 10.1039/d2nj03801c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The ordered mesoporous structure could improve the dispersion of nanoparticles, promote effective collision, and enhance redox capacity and surface acidity.
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Affiliation(s)
- Yibo Mu
- College of Materials and Metallurgical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, and National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Xiaosheng Huang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, and National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Zhicheng Tang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, and National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Qingchun Wang
- College of Materials and Metallurgical Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
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15
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Xu J, Zhang Y, Zou X, Tang T, Zhang Q, Guo F, Liu H. Recent advances and perspectives in the resistance of SO 2 and H 2O of cerium-based catalysts for NO x selective catalytic reduction with ammonia. NEW J CHEM 2022. [DOI: 10.1039/d1nj04825b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This review emphasizes the aspects related to cerium-based catalysts at different levels: metal modification, preparation methods, structures, and reaction mechanisms.
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Affiliation(s)
- Junqiang Xu
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Yanrong Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Xianlin Zou
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Tian Tang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Qiang Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Fang Guo
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Honghui Liu
- SPIC Yuanda Environmental Protection of Catalyst Co., Ltd, Chongqing, 401336, China
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16
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Selective catalytic reductive removal of NO x with decreased interference from SO 2 and H 2O by use of Sm-modified Sm xCo 0.05-xCe 0.05Ti 0.9O y catalysts. J Colloid Interface Sci 2021; 611:9-21. [PMID: 34929440 DOI: 10.1016/j.jcis.2021.12.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 11/23/2022]
Abstract
This work presents a novel and highly efficient NH3-SCR catalyst, Sm-modified CoCeTiOx, synthesized by a simple one-step sol-gel method. The optimum Sm0.03Co0.02Ce0.05Ti0.9Ox catalyst with a high BET surface area shows more than 90% NO conversion and nearly 100 % N2 selectivity at 180-440 °C. We investigated the relationship between Sm content and surface reactivity using NH3-TPD, H2-TPR, XPS, and in-situ DRIFTS. It demonstrated that the Sm-doping could precisely regulate the acidity and redox ability of the SmaCo0.05-aCe0.05Ti0.9Ox catalyst. Sm helped develop paths for fast electron transport, in which a charge transfer bridge was built between the Ce and Co, largely favoring the redox cycle. The nature of the acid sites, NOx adsorption, and the reactivity of surface adsorption species was characterized via in-situ DRIFTS. Moreover, the addition of Sm weakened the adsorption capacity of SO2 on the catalyst surface. We found that the electron transfer between SO2 and the activity sites was hindered on the modified catalyst.
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17
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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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18
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Enhanced stability of Fe-modified CuO-ZnO-ZrO2-Al2O3/HZSM-5 bifunctional catalysts for dimethyl ether synthesis from CO2 hydrogenation. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.11.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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19
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Wang B, Ma J, Wang D, Gong Z, Shi Q, Gao C, Lu C, Crittenden J. Acid-pretreated red mud for selective catalytic reduction of NO with NH3: Insights into inhibition mechanism of binders. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.05.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Shan W, Yu Y, Zhang Y, He G, Peng Y, Li J, He H. Theory and practice of metal oxide catalyst design for the selective catalytic reduction of NO with NH3. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.05.015] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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21
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Kang K, Yao X, Huang Y, Cao J, Rong J, Zhao W, Luo W, Chen Y. Insights into the co-doping effect of Fe 3+ and Zr 4+ on the anti-K performance of CeTiO x catalyst for NH 3-SCR reaction. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125821. [PMID: 33866288 DOI: 10.1016/j.jhazmat.2021.125821] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/24/2021] [Accepted: 04/04/2021] [Indexed: 06/12/2023]
Abstract
A novel K-resistant Fe3+ and Zr4+ co-doped CeTiOx catalyst was first prepared by co-precipitation method for the ammonia-selective catalytic reduction (NH3-SCR) of NOx. On the premise of retaining the outstanding catalytic activity of CeTiOx catalyst, Fe3+ and Zr4+ co-doping efficiently improves its K-resistance with superior NOx conversion up to 84% after K-poisoning. Specially, the grain growth during the second calcination after K poisoning is successfully inhibited by Fe3+ and Zr4+ co-doping. Consequently, the large specific surface area with increased acid sites and efficiently retained reducibility over K-poisoned FeZrCeTiOx catalyst are realized, which prompt NH3 activation and NO oxidation, further benefit NH3-SCR. Besides, NH3-SCR reaction over CeTiOx and FeZrCeTiOx catalysts follows a possible L-H mechanism, and K-poisoning makes no change to it. Finally, a reasonable anti-K poisoning mechanism of FeZrCeTiOx catalyst is proposed: the excellent K-resistance is attributed to part of Fe and Zr are sacrificed to form Fe-O-K and Zr-O-K species protecting the active site Ce-O-Ti from K-poisoning, as well as the additional reducibility and surface acidity brought from Fe-O species with Zr prompting its uniform distribution.
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Affiliation(s)
- Keke Kang
- Research Center for Atmospheric Environment, Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing 400714, PR China; School of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xiaojiang Yao
- Research Center for Atmospheric Environment, Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing 400714, PR China; School of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Yike Huang
- School of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China; CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Jun Cao
- Research Center for Atmospheric Environment, Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing 400714, PR China
| | - Jing Rong
- Research Center for Atmospheric Environment, Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing 400714, PR China
| | - Wanxia Zhao
- Research Center for Atmospheric Environment, Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing 400714, PR China
| | - Wen Luo
- Research Center for Atmospheric Environment, Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing 400714, PR China; School of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yang Chen
- Research Center for Atmospheric Environment, Key Laboratory of Reservoir Aquatic Environment of CAS, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China; College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing), Chongqing 400714, PR China; School of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China
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22
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Zeng Y, Zhang S. Revealing active species of CePO4 catalyst for selective catalytic reduction of NO with NH3. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2021.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Gao M, He G, Zhang W, Du J, He H. Reaction Pathways of the Selective Catalytic Reduction of NO with NH 3 on the α-Fe 2O 3(012) Surface: a Combined Experimental and DFT Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:10967-10974. [PMID: 34165293 DOI: 10.1021/acs.est.1c01628] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fe2O3-based catalysts have promising potential in the selective catalytic reduction (SCR) of NO with NH3 with the advantages of environmental friendliness, excellent medium-high SCR activity, good N2 selectivity, and high SO2 tolerance. However, the NH3-SCR mechanism over Fe2O3-based catalysts remains highly uncertain and controversial due to the complex nature of the SCR reaction. Herein, the NH3-SCR reaction pathways over the α-Fe2O3(012) surface are elucidated at the atomic level by density functional theory calculations and experimental measurements. We demonstrate that, different from the NH3 activation mechanism in numerous SCR catalytic systems, the reaction tends to follow the NO activation mechanism, in which NO activated at Fe sites reacts with NH3 to form a NH2NO intermediate and further decomposes into N2 and H2O, in synchronization with the formation of a surface OH group. Subsequently, the catalyst is regenerated by an O2-assisted surface-dehydrogenation process. The activation of NO as well as the formation of the NH2NO intermediate is the rate-determining step of the complete SCR cycle. This study enhances the atomic-level understanding toward the NH3-SCR reaction and provides insights for the development of Fe2O3-based SCR catalysts.
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Affiliation(s)
- Meng Gao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangzhi He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenshuo Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinpeng Du
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
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24
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He G, Gao M, Peng Y, Yu Y, Shan W, He H. Superior Oxidative Dehydrogenation Performance toward NH 3 Determines the Excellent Low-Temperature NH 3-SCR Activity of Mn-Based Catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:6995-7003. [PMID: 33683111 DOI: 10.1021/acs.est.0c08214] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Mn-based oxides exhibit outstanding low-temperature activity for the selective catalytic reduction of NOx with NH3 (NH3-SCR) compared with other catalysts. However, the underlying principle responsible for the excellent low-temperature activity is not yet clear. Here, the atomic-level mechanism and activity-limiting factor in the NH3-SCR process over Mn-, Fe-, and Ce-based oxide catalysts are elucidated by a combination of first-principles calculations and experimental measurements. We found that the superior oxidative dehydrogenation performance toward NH3 of Mn-based catalysts reduces the energy barriers for the activation of NH3 and the formation of the key intermediate NH2NO, which is the rate-determining step in NH3-SCR over these oxide catalysts. The findings of this study advance the understanding of the working principle of Mn-based SCR catalysts and provide a fundamental basis for the development of future generation SCR catalysts with excellent low-temperature activity.
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Affiliation(s)
- Guangzhi He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Meng Gao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yunbo Yu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenpo Shan
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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25
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Xu P, Zheng J, Jing F, Chu W. Influence of support precursor on FeCe-TiO2 for selective catalytic reduction of NO with ammonia. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111586] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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CeO2-WO3 catalysts for the selective catalytic reduction of NOx with NH3: effect of the amount of WO3. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-020-01911-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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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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28
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Zhang Y, Zeng H, Jia B, Liu Z. Selective catalytic reduction of NOx by H2 over a novel Pd/FeTi catalyst. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.05.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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29
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Park G, Kim M, Cha J, Kim H, Lee H. Local atomic structure and enhanced catalytic activity of W doped CeWTiOx catalysts. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121689] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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30
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Chen Q, Yang Y, Luo H, Liu Z, Tong Z, Tao C, Du J. Ce regulated surface properties of Mn/SAPO-34 for improved NH 3-SCR at low temperature. RSC Adv 2020; 10:40047-40054. [PMID: 35520869 PMCID: PMC9057469 DOI: 10.1039/d0ra06639g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/20/2020] [Indexed: 12/03/2022] Open
Abstract
Ce modified MnO x /SAPO-34 was prepared and investigated for low-temperature selective catalytic reduction of NO x with ammonia (NH3-SCR). The 0.3Ce-Mn/SAPO-34 catalyst had nearly 95% NO conversion at 200-350 °C at a space velocity of 10 000 h-1. Microporous SAPO-34 as the support provided the catalyst with increased hydrothermal stability. XPS and H2-TPR results proved that the Mn4+ and Oα content increased after incorporation of Ce, this promoted the conversion of NO at low temperature via a 'fast SCR' route. NH3-TPD measurements combined oxidation experiments of NO, NH3 indicated the reduction of both the surface acidity and the amount of acid sites, which effectively decreased the NH3 oxditaion to NO or N2O at elevated temperature and promoted the catalytic selectivity for nitrogen. A redox cycle between manganese oxide and Ce was assumed for the active oxygen transfer and facilitated the catalyst durability.
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Affiliation(s)
- Qizhi Chen
- School of Chemistry and Chemical Engineering, Guangxi University Nanning 530004 China
- Guangxi Huiyuan Manganese Industry Co., Ltd. China
| | - Yong Yang
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Hang Luo
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Zuohua Liu
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Zhangfa Tong
- School of Chemistry and Chemical Engineering, Guangxi University Nanning 530004 China
| | - Changyuan Tao
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Jun Du
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
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31
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Li L, Li P, Tan W, Ma K, Zou W, Tang C, Dong L. Enhanced low-temperature NH3-SCR performance of CeTiO catalyst via surface Mo modification. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63437-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Zhang W, Shi X, Shan Y, Liu J, Xu G, Du J, Yan Z, Yu Y, He H. Promotion effect of cerium doping on iron–titanium composite oxide catalysts for selective catalytic reduction of NOx with NH3. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02292a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Doping with a suitable amount of Ce enhances the SCR performance of FeTi catalysts.
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Affiliation(s)
- Wenshuo Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Xiaoyan Shi
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Yulong Shan
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Jingjing Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Guangyan Xu
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Jinpeng Du
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Zidi Yan
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Yunbo Yu
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
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33
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Comparision on the Low-Temperature NH3-SCR Performance of γ-Fe2O3 Catalysts Prepared by Two Different Methods. Catalysts 2019. [DOI: 10.3390/catal9121018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Maghemite (γ-Fe2O3) catalysts were prepared by two different methods, and their activities and selectivities for selective catalytic reduction of NO with NH3 were investigated. The methods of X-ray powder diffraction (XRD), Brunauer–Emmett–Teller (BET), X-ray photoelectron spectroscopy (XPS), hydrogen temperature-programmed reduction (H2-TPR), ammonia temperature-programmed desorption (NH3-TPD), transmission electron microscopy (TEM), Energy-dispersive X-ray spectroscopy (EDS), and in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS) were used to characterize the catalysts. The resulted demonstrated that the γ-Fe2O3 nanoparticles prepared by the facile method (γ-Fe2O3–FM) not only exhibited better NH3-SCR activity and selectivity than the catalyst prepared by the coprecipitation method but also showed improved SO2 tolerance. This superior NH3-SCR performance was credited to the existence of the larger surface area, better pore structure, a high concentration of lattice oxygen and surface-adsorbed oxygen, good reducibility, a lot of acid sites, lower activation energy, adsorption of the reactants, and the existence of unstable nitrates on the surface of the γ-Fe2O3–FM.
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34
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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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35
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Wang X, Li X, Mu J, Fan S, Wang L, Gan G, Qin M, Li J, Li Z, Zhang D. Facile Design of Highly Effective CuCe xCo 1–xO y Catalysts with Diverse Surface/Interface Structures toward NO Reduction by CO at Low Temperatures. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01636] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xinyang Wang
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xinyong Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jincheng Mu
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Shiying Fan
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Liang Wang
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Guoqiang Gan
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Meichun Qin
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Ji Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zeyu Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Dongke Zhang
- Centre for Energy (M473), The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
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36
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Insights over Titanium Modified FeMgOx Catalysts for Selective Catalytic Reduction of NOx with NH3: Influence of Precursors and Crystalline Structures. Catalysts 2019. [DOI: 10.3390/catal9060560] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Titanium modified FeMgOx catalysts with different precursors were prepared by coprecipitation method with microwave thermal treatment. The iron precursor is a key factor affecting the surface active component. The catalyst using FeSO4 and Mg(NO3)2 as precursors exhibited enhanced catalytic activity from 225 to 400 °C, with a maximum NOx conversion of 100%. Iron oxides existed as γ-Fe2O3 in this catalyst. They exhibited highly enriched surface active oxygen and surface acidity, which were favorable for low-temperature selective catalytic reduction (SCR) reaction. Besides, it showed advantage in surface area, spherical particle distribution and pores connectivity. Amorphous iron-magnesium-titanium mixed oxides were the main phase of the catalysts using Fe(NO3)3 as a precursor. This catalyst exhibited a narrow T90 of 200/250–350 °C. Side reactions occurred after 300 °C producing NOx, which reduced the NOx conversion. The strong acid sites inhibited the side reactions, and thus improved the catalytic performance above 300 °C. The weak acid sites appeared below 200 °C, and had a great impact on the low-temperature catalytic performance. Nevertheless, amorphous iron-magnesium-titanium mixed oxides blocked the absorption and activation between NH3 and the surface strong acid sites, which was strengthened on the γ-Fe2O3 surface.
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37
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Shi R, Zhang Y, Yuan B, Zheng Z, Ni L, Feng R, Lin X, Dai L. Nb-Modified CeAlOx Catalyst Used for the Selective Catalytic Reduction of NO by NH3: The Promoting Effect of Nb. KINETICS AND CATALYSIS 2019. [DOI: 10.1134/s0023158419020101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Applicability of V2O5-WO3/TiO2 Catalysts for the SCR Denitrification of Alumina Calcining Flue Gas. Catalysts 2019. [DOI: 10.3390/catal9030220] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
V2O5-WO3/TiO2 catalysts with different V2O5 and WO3 loadings were prepared by the impregnation method. H2O and SO2 resistance of the catalysts under high H2O concentration (30 vol.%) was studied. Influence of various basic metal oxides, such as Al2O3, CaO, Na2O, and K2O on the catalytic performance was studied and compared. It is revealed that the inhibitory effect is in the sequence of K > Na > Ca > Al, which is consistent with their alkalinity. X-ray diffraction (XRD), N2 physisorption (BET), temperature-programmed desorption of NH3 (NH3-TPD), H2-temperature programmed reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) were carried out, and the results were well-correlated with the catalytic studies.
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39
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Kang L, Han L, He J, Li H, Yan T, Chen G, Zhang J, Shi L, Zhang D. Improved NO x Reduction in the Presence of SO 2 by Using Fe 2O 3-Promoted Halloysite-Supported CeO 2-WO 3 Catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:938-945. [PMID: 30576117 DOI: 10.1021/acs.est.8b05637] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Currently, selective catalytic reduction (SCR) of NO x with NH3 in the presence of SO2 by using vanadium-free catalysts is still an important issue for the removal of NO x for stationary sources. Developing high-performance catalysts for NO x reduction in the presence of SO2 is a significant challenge. In this work, a series of Fe2O3-promoted halloysite-supported CeO2-WO3 catalysts were synthesized by a molten salt treatment followed by the impregnation method and demonstrated improved NO x reduction in the presence of SO2. The obtained catalyst exhibits superior catalytic activity, high N2 selectivity over a wide temperature range from 270 to 420 °C, and excellent sulfur-poisoning resistance. It has been demonstrated that the Fe2O3-promoted halloysite-supported CeO2-WO3 catalyst increased the ratio of Ce3+ and the amount of surface oxygen vacancies and enhanced the interaction between active components. Moreover, the SCR reaction mechanism of the obtained catalyst was studied using in situ diffuse reflectance infrared Fourier transform spectroscopy. It can be inferred that the number of Brønsted acid sites is significantly increased, and more active species could be produced by Fe2O3 promotion. Furthermore, in the presence of SO2, the Fe2O3-promoted halloysite-supported CeO2-WO3 catalyst can effectively prevent the irreversible bonding of SO2 with the active components, making the catalyst exhibit desirable sulfur resistance. The work paves the way for the development of high-performance SCR catalysts with improved NO x reduction in the presence of SO2.
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Affiliation(s)
- Lin Kang
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
| | - Lupeng Han
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
| | - Jiebing He
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
| | - Hongrui Li
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
| | - Tingting Yan
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
| | - Guorong Chen
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
| | - Jianping Zhang
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
| | - Liyi Shi
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
| | - Dengsong Zhang
- Department of Chemistry, College of Sciences, Research Center of Nano Science and Technology , Shanghai University , Shanghai 200444 , P. R. China
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40
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Wang D, Zhang C, Xie Y, Pan Z, Xue X, Zhang R. A study on the catalytic oxidation of soot by Sn–Ce composite oxides: adsorbed oxygen and defect sites synergistically enhance catalytic activity. NEW J CHEM 2019. [DOI: 10.1039/c9nj04134f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two reaction paths in the presence of a Sn–Ce catalyst with H2O (path 1) and without H2O (path 2).
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Affiliation(s)
- Dengtai Wang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Environmental Chemistry & Low Carbon Technologies Key Lab of Henan Province
| | - Changsen Zhang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Environmental Chemistry & Low Carbon Technologies Key Lab of Henan Province
| | - Yunyun Xie
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Environmental Chemistry & Low Carbon Technologies Key Lab of Henan Province
| | - Zeyou Pan
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Environmental Chemistry & Low Carbon Technologies Key Lab of Henan Province
| | - Xiangfei Xue
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Environmental Chemistry & Low Carbon Technologies Key Lab of Henan Province
| | - Ruiqin Zhang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
- Environmental Chemistry & Low Carbon Technologies Key Lab of Henan Province
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41
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Ye D, Ren X, Qu R, Liu S, Zheng C, Gao X. Designing SO2-resistant cerium-based catalyst by modifying with Fe2O3 for the selective catalytic reduction of NO with NH3. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2018.10.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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42
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Liu H, Sun C, Fan Z, Jia X, Sun J, Gao F, Tang C, Dong L. Doping effect of Sm on the TiO2/CeSmOx catalyst in the NH3-SCR reaction: structure–activity relationship, reaction mechanism and SO2 tolerance. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00731h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A good balance between the redox properties and surface acidity induces the high activity of the Sm doped TiO2/CeO2 catalyst.
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Affiliation(s)
- Hao Liu
- School of the Environment
- Jiangsu Key Laboratory of Vehicle Emissions Control
- Center of Modern Analysis
- Nanjing University
- Nanjing 210093
| | - Chuanzhi Sun
- School of the Environment
- Jiangsu Key Laboratory of Vehicle Emissions Control
- Center of Modern Analysis
- Nanjing University
- Nanjing 210093
| | - Zhongxuan Fan
- School of the Environment
- Jiangsu Key Laboratory of Vehicle Emissions Control
- Center of Modern Analysis
- Nanjing University
- Nanjing 210093
| | - 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
| | - Jingfang Sun
- School of the Environment
- Jiangsu Key Laboratory of Vehicle Emissions Control
- Center of Modern Analysis
- Nanjing University
- Nanjing 210093
| | - Fei Gao
- School of the Environment
- Jiangsu Key Laboratory of Vehicle Emissions Control
- Center of Modern Analysis
- Nanjing University
- Nanjing 210093
| | - Changjin Tang
- School of the Environment
- Jiangsu Key Laboratory of Vehicle Emissions Control
- Center of Modern Analysis
- Nanjing University
- Nanjing 210093
| | - Lin Dong
- School of the Environment
- Jiangsu Key Laboratory of Vehicle Emissions Control
- Center of Modern Analysis
- Nanjing University
- Nanjing 210093
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43
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Ce1-xFexO2-δ catalysts for catalytic methane combustion: Role of oxygen vacancy and structural dependence. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.12.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Chen J, Qu W, Chen Y, Liu X, Jiang X, Wang H, Zong Y, Ma Z, Tang X. Simultaneously Enhancing Stability and Activity of Maghemite via Site-Specific Ti(IV) Doping for NO Emission Control. ChemCatChem 2018. [DOI: 10.1002/cctc.201801169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Junxiao Chen
- Shanghai Key Laboratory of Atmospheric Particle Pollution & Prevention (LAP ), Department of Environmental Science & Engineering; Fudan University; Shanghai 200438 P.R. China
| | - Weiye Qu
- Shanghai Key Laboratory of Atmospheric Particle Pollution & Prevention (LAP ), Department of Environmental Science & Engineering; Fudan University; Shanghai 200438 P.R. China
| | - Yaxin Chen
- Shanghai Key Laboratory of Atmospheric Particle Pollution & Prevention (LAP ), Department of Environmental Science & Engineering; Fudan University; Shanghai 200438 P.R. China
| | - Xiaona Liu
- Shanghai Key Laboratory of Atmospheric Particle Pollution & Prevention (LAP ), Department of Environmental Science & Engineering; Fudan University; Shanghai 200438 P.R. China
| | - Xiaoming Jiang
- Datang Nanjing Environmental Protection Technology Co., Ltd., Nanjing; 211111 P.R. China
| | - Hu Wang
- Datang Nanjing Environmental Protection Technology Co., Ltd., Nanjing; 211111 P.R. China
| | - Yuhao Zong
- Datang Nanjing Environmental Protection Technology Co., Ltd., Nanjing; 211111 P.R. China
| | - Zhen Ma
- Shanghai Key Laboratory of Atmospheric Particle Pollution & Prevention (LAP ), Department of Environmental Science & Engineering; Fudan University; Shanghai 200438 P.R. China
- Shanghai Institute of Pollution Control & Ecological Security, Shanghai; 200092 P.R. China
| | - Xingfu Tang
- Shanghai Key Laboratory of Atmospheric Particle Pollution & Prevention (LAP ), Department of Environmental Science & Engineering; Fudan University; Shanghai 200438 P.R. China
- Shanghai Institute of Pollution Control & Ecological Security, Shanghai; 200092 P.R. China
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45
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Review on the latest developments in modified vanadium-titanium-based SCR catalysts. CHINESE JOURNAL OF CATALYSIS 2018. [DOI: 10.1016/s1872-2067(18)63090-6] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Mu J, Li X, Sun W, Fan S, Wang X, Wang L, Qin M, Gan G, Yin Z, Zhang D. Enhancement of Low-Temperature Catalytic Activity over a Highly Dispersed Fe–Mn/Ti Catalyst for Selective Catalytic Reduction of NOx with NH3. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b01335] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jincheng Mu
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xinyong Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Wenbo Sun
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Shiying Fan
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xinyang Wang
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Liang Wang
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Meichun Qin
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Guoqiang Gan
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhifan Yin
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Dongke Zhang
- Centre for Energy (M473), The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
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47
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You Y, Shi C, Chang H, Guo L, Xu L, Li J. The promoting effects of amorphous CePO 4 species on phosphorus-doped CeO 2 /TiO 2 catalysts for selective catalytic reduction of NO x by NH 3. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.04.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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48
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Liu Z, Feng X, Zhou Z, Xu Q. Selective Catalytic Reduction of NOx with NH3 over Novel Fe–Ni–Ti Catalyst. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b01387] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Qi Xu
- Jiangsu Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipment, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
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49
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Wang D, Yang Q, Li X, Peng Y, Li B, Si W, Lu C, Gan L. Preparation of γ
-Fe2
O3
Catalysts and their deNO
x
Performance: Effects of Precipitation Conditions. Chem Eng Technol 2018. [DOI: 10.1002/ceat.201600488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dong Wang
- Tsinghua University; State Key Joint Laboratory of Environment Simulation and Pollution Control; School of Environment; No. 1, Tsinghua Yuan 100084 Beijing China
- Shandong University; National Engineering Laboratory for Coal-Burning Pollutants Emission Reduction; School of Energy and Power Engineering; No. 17513, Jingshi Road 250061 Jinan China
| | - Qilei Yang
- Tsinghua University; State Key Joint Laboratory of Environment Simulation and Pollution Control; School of Environment; No. 1, Tsinghua Yuan 100084 Beijing China
| | - Xiansheng Li
- Tsinghua University; State Key Joint Laboratory of Environment Simulation and Pollution Control; School of Environment; No. 1, Tsinghua Yuan 100084 Beijing China
| | - Yue Peng
- Tsinghua University; State Key Joint Laboratory of Environment Simulation and Pollution Control; School of Environment; No. 1, Tsinghua Yuan 100084 Beijing China
| | - Bing Li
- Tsinghua University; State Key Joint Laboratory of Environment Simulation and Pollution Control; School of Environment; No. 1, Tsinghua Yuan 100084 Beijing China
| | - Wenzhe Si
- Massachusetts Institute of Technology; Department of Materials Science and Engineering; No. 77, Massachusetts Ave. 02139 Massachusetts, MA Cambridge USA
| | - Chunmei Lu
- Shandong University; National Engineering Laboratory for Coal-Burning Pollutants Emission Reduction; School of Energy and Power Engineering; No. 17513, Jingshi Road 250061 Jinan China
| | - Lina Gan
- Tsinghua University; State Key Joint Laboratory of Environment Simulation and Pollution Control; School of Environment; No. 1, Tsinghua Yuan 100084 Beijing China
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50
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Investigating the role of H4SiW12O40 in the acidity, oxidability and activity of H4SiW12O40-Fe2O3 catalysts for the selective catalytic reduction of NO with NH3. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.01.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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