1
|
Wei Y, Wang S, Chen M, Han J, Yang G, Wang Q, Di J, Li H, Wu W, Yu J. Coaxial 3D Printing of Zeolite-Based Core-Shell Monolithic Cu-SSZ-13@SiO 2 Catalysts for Diesel Exhaust Treatment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2302912. [PMID: 37177904 DOI: 10.1002/adma.202302912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/01/2023] [Indexed: 05/15/2023]
Abstract
Core-shell catalysts with functional shells can increase the activity and stability of the catalysts in selective catalytic reduction of NOx with ammoniax. However, the conventional approaches based on multistep fabrication for core-shell structures encounter persistent restrictions regarding strict synthesis conditions and limited design flexibility. Herein, a facile coaxial 3D printing strategy is for the first time developed to construct zeolite-based core-shell monolithic catalysts with interconnected honeycomb structures, in which the hydrophilic noncompact silica serves as shell and Cu-SSZ-13 zeolite acts as core. Compared to a Cu-SSZ-13 monolith which suffers from the interfacial diffusion, the SiO2 shell layer can increase the accessibility of active sites over Cu-SSZ-13@SiO2, resulting in a 10-20% higher NO conversion at200-550 °C under 300 000 cm3 g-1 h-1. Meanwhile, a thicker SiO2 shell enhances the hydrothermal stability of the aged catalyst by inhibiting the dealumination and the formation of CuOx. Other representative monolithic catalysts with different topological zeolites as shell and diverse metal oxides as the core can be also realized by this coaxial 3D printing. This strategy allows multiple porous materials to be directly integrated, which allows for flexible design and fabrication of various core-shell monolithic catalysts with customized functionalities.
Collapse
Affiliation(s)
- Yingzhen Wei
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Shuang Wang
- Henan Province Function-Oriented Porous Materials Key Laboratory, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471934, China
| | - Mengyang Chen
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou, 317000, China
| | - Jinfeng Han
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Guoju Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qifei Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Jiancheng Di
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Hongli Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Wenzheng Wu
- School of Mechanical and Aerospace Engineering, Jilin University, Changchun, 130025, China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
- International Center of Future Science, Jilin University, Changchun, 130012, China
| |
Collapse
|
2
|
Wu T, Guo RT, Li CF, You YH, Pan WG. Recent advances in core-shell structured catalysts for low-temperature NH 3-SCR of NO x. CHEMOSPHERE 2023; 333:138942. [PMID: 37187371 DOI: 10.1016/j.chemosphere.2023.138942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/17/2023]
Abstract
Ammonia selective catalytic reduction (NH3-SCR) of nitrogen oxides is an effective and well-established technology for NOx removal, but current commercial denitrification catalysts based on V2O5-WO3/TiO2 have some obvious disadvantages, including narrow operating temperature windows, toxicity, poor hydrothermal stability, and unsatisfied SO2/H2O tolerance. To overcome these drawbacks, it is imperative to investigate new types of highly efficient catalysts. In order to design catalysts with outstanding selectivity, activity, and anti-poisoning ability, core-shell structured materials have been widely applied in the NH3-SCR reaction, which exhibits numerous advantages including the large surface area, the strong synergy interaction of core-shell materials, the confinement effect, and the shielding effect from the shell layer to protect the core. This review summarizes recent developments of core-shell structured catalysts for NH3-SCR, including basic classification, synthesis methods, and a detailed description of the performance and mechanisms of each type of catalyst. It is hoped that the review will stimulate future developments in NH3-SCR technology, leading to novel catalyst designs with improved denitrification performance.
Collapse
Affiliation(s)
- Tong Wu
- College of Energy Source and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China
| | - Rui-Tang Guo
- College of Energy Source and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China; Shanghai Non-Carbon Energy Conversion and Utilization Institute, Shanghai, China.
| | - Chu-Fan Li
- College of Energy Source and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China
| | - Yi-Hao You
- College of Energy Source and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China
| | - Wei-Guo Pan
- College of Energy Source and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China; Shanghai Non-Carbon Energy Conversion and Utilization Institute, Shanghai, China.
| |
Collapse
|
3
|
Guan B, Zhou J, Liu Z, Wu X, Wei Y, Guo J, Jiang H, Lin H, Huang Z. Degenerating effect of transformation and loss of active sites on NH3-SCR activity during the hydrothermal aging process for Cu-SSZ-13 molecular sieve catalyst. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
4
|
Ting-ting X, Gang-gang L, Kai-hua Z, Xin-yan Z, Xin Z, Shao-qing Z. Effective reduction of nitric oxide over a core-shell Cu-SAPO-34@Fe-MOR zeolite catalyst. RSC Adv 2022; 13:638-651. [PMID: 36605656 PMCID: PMC9780741 DOI: 10.1039/d2ra06708k] [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: 10/24/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
In this study, a core-shell catalyst of Cu-SAPO-34@Fe-MOR was successfully prepared through a silica-sol adhesion method, and its performance for selective catalytic reduction of nitric oxide by NH3 (NH3-SCR) was evaluated in detail. The Fe-MOR coating has not only increased the high-temperature activity and broadened the reaction temperature window of Cu-SAPO-34 to a large extent, but also increased the hydrothermal stability of Cu-SAPO-34 markedly. It is demonstrated that a strong synergistic interaction effect exists between Cu2+ and Fe3+ ions and promotes the redox cycle and oxidation-reduction ability of copper ions, which greatly accelerates the catalytic performance of the core-shell Cu-SAPO-34@Fe-MOR catalyst. Abundant isolated Cu2+ ions and Fe3+ ions on the ion exchange sites performing NO x reduction at low and high temperature region lead to the broad reaction temperature window of Cu-SAPO-34@Fe-MOR. In addition, more weakly adsorbed NO x species formed and the increased number of Lewis acid sites may also contribute to the higher catalytic performance of Cu-SAPO-34@Fe-MOR. On the other hand, the better hydrothermal ageing stability of Cu-SAPO-34@Fe-MOR is related to its lighter structural collapse, fewer acidic sites lost, more active components (Cu2+ and Fe3+) maintained, and more monodentate nitrate species formed in the core-shell catalyst after hydrothermal ageing. Last, the mechanism study has found that both Langmuir-Hinshelwood ("L-H") and Eley-Rideal ("E-R") mechanisms play an essential role in the catalytic process of Cu-SAPO-34@Fe-MOR, and constitute another reason for its higher activity compared with that of Cu-SAPO-34 (only "L-H" mechanism).
Collapse
Affiliation(s)
- Xu Ting-ting
- School of Chemistry and Environmental Engineering, Changchun University of Science and TechnologyChangchun 130022P. R. China+86-431-8558-3152+86-431-8558-3152
| | - Li Gang-gang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of SciencesBeijing 101408P. R. China
| | - Zheng Kai-hua
- School of Chemistry and Environmental Engineering, Changchun University of Science and TechnologyChangchun 130022P. R. China+86-431-8558-3152+86-431-8558-3152
| | - Zhang Xin-yan
- School of Chemistry and Environmental Engineering, Changchun University of Science and TechnologyChangchun 130022P. R. China+86-431-8558-3152+86-431-8558-3152,Chongqing Research Institute, Changchun University of Science and TechnologyChongqing 401135P. R. China
| | - Zhang Xin
- School of Chemistry and Environmental Engineering, Changchun University of Science and TechnologyChangchun 130022P. R. China+86-431-8558-3152+86-431-8558-3152
| | - Zhang Shao-qing
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences4888 Shengbei Street, North District of Changchun High, ChangchunJilin 130102China
| |
Collapse
|
5
|
Wang L, Ren Y, Yu X, Peng C, Yu D, Zhong C, Hou J, Yin C, Fan X, Zhao Z, Liu J, Wei Y. Novel preparation method, catalytic performance and reaction mechanisms of PrxMn1-xOδ/3DOM ZSM-5 catalysts for the simultaneous removal of soot and NO. J Catal 2022. [DOI: 10.1016/j.jcat.2022.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
6
|
Li P, Xin Y, Zhang H, Yang F, Tang A, Han D, Jia J, Wang J, Li Z, Zhang Z. Recent progress in performance optimization of Cu-SSZ-13 catalyst for selective catalytic reduction of NOx. Front Chem 2022; 10:1033255. [PMID: 36324517 PMCID: PMC9621587 DOI: 10.3389/fchem.2022.1033255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 09/28/2022] [Indexed: 11/14/2022] Open
Abstract
Nitrogen oxides (NOx), which are the major gaseous pollutants emitted by mobile sources, especially diesel engines, contribute to many environmental issues and harm human health. Selective catalytic reduction of NOx with NH3 (NH3-SCR) is proved to be one of the most efficient techniques for reducing NOx emission. Recently, Cu-SSZ-13 catalyst has been recognized as a promising candidate for NH3-SCR catalyst for reducing diesel engine NOx emissions due to its wide active temperature window and excellent hydrothermal stability. Despite being commercialized as an advanced selective catalytic reduction catalyst, Cu-SSZ-13 catalyst still confronts the challenges of low-temperature activity and hydrothermal aging to meet the increasing demands on catalytic performance and lifetime. Therefore, numerous studies have been dedicated to the improvement of NH3-SCR performance for Cu-SSZ-13 catalyst. In this review, the recent progress in NH3-SCR performance optimization of Cu-SSZ-13 catalysts is summarized following three aspects: 1) modifying the Cu active sites; 2) introducing the heteroatoms or metal oxides; 3) regulating the morphology. Meanwhile, future perspectives and opportunities of Cu-SSZ-13 catalysts in reducing diesel engine NOx emissions are discussed.
Collapse
Affiliation(s)
- Pan Li
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
| | - Ying Xin
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
- *Correspondence: Ying Xin,
| | - Hanxue Zhang
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
| | - Fuzhen Yang
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
| | - Ahui Tang
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
| | - Dongxu Han
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
| | - Junxiu Jia
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
| | - Jin Wang
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
| | - Zhenguo Li
- National Engineering Laboratory for Mobile Source Emission Control Technology, China Automotive Technology & Research Center Co., Ltd., Tianjin, China
| | - Zhaoliang Zhang
- School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, China
| |
Collapse
|
7
|
Song X, Fu Y, Pang Y, Gao L. Preparation of La-Zn/HZSM-5 zeolite and its application in photocatalytic degradation of phenol. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
8
|
Chen M, Li J, Xue W, Wang S, Han J, Wei Y, Mei D, Li Y, Yu J. Unveiling Secondary-Ion-Promoted Catalytic Properties of Cu-SSZ-13 Zeolites for Selective Catalytic Reduction of NO x. J Am Chem Soc 2022; 144:12816-12824. [PMID: 35802169 DOI: 10.1021/jacs.2c03877] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The incorporation of secondary metal ions into Cu-exchanged SSZ-13 zeolites could improve their catalytic properties in selective catalytic reduction of NOx with ammonia (NH3-SCR), but their essential roles remain unclear at the molecular level. Herein, a series of Cu-Sm-SSZ-13 zeolites have been prepared by ion-exchanging Sm ions followed by Cu ions, which exhibit superior NH3-SCR performance. The NO conversion of Cu-Sm-SSZ-13 is nearly 10% higher than that of conventional Cu-SSZ-13 (175-250 °C) after hydrothermal ageing, showing an enhanced low-temperature activity. The Sm ions are found to occupy the six-membered rings (6MRs) of SSZ-13 by X-ray diffraction Rietveld refinement and aberration-corrected scanning transmission electron microscopy. The Sm ions at 6MRs can facilitate the formation of more active [ZCu2+(OH)]+ ions at 8MRs, as revealed by temperature-programmed reduction of hydrogen. X-ray photoelectron spectroscopy and density functional theory (DFT) calculations indicate that there exists electron transfer from Sm3+ to [ZCu2+(OH)]+ ions, which promotes the activity of [ZCu2+(OH)]+ ions by decreasing the activation energy of the formation of intermediates (NH4NO2 and H2NNO). Meanwhile, the electrostatic interaction between Sm3+ and [ZCu2+(OH)]+ results in a high-reaction energy barrier for transforming [ZCu2+(OH)]+ ions into inactive CuOx species, thus enhancing the stability of [ZCu2+(OH)]+ ions. The influence of the ion-exchanging sequence of Sm and Cu ions into SSZ-13 is further investigated by combining both experiments and theoretical calculations. This work provides a mechanistic insight of secondary ions in regulating the distribution, activity, and stability of Cu active sites, which is helpful for the design of high-performance Cu-SSZ-13 catalysts for the NH3-SCR reaction.
Collapse
Affiliation(s)
- Mengyang Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.,International Center of Future Science, Jilin University, Changchun 130012, P. R. China
| | - Junyan Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.,Centre for High-Resolution Electron Microscopy (CℏEM), School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Wenjuan Xue
- School of Materials Science and Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
| | - Sen Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China
| | - Jinfeng Han
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yingzhen Wei
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Donghai Mei
- School of Materials Science and Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
| | - Yi Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.,International Center of Future Science, Jilin University, Changchun 130012, P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.,International Center of Future Science, Jilin University, Changchun 130012, P. R. China
| |
Collapse
|
9
|
Understanding roles of Ce on hydrothermal stability of Cu-SSZ-52 catalyst for selective catalytic reduction of NO with NH3. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
10
|
Hierarchically interconnected porous Mn Co3-O4 spinels for Low-temperature catalytic reduction of NO by CO. J Catal 2022. [DOI: 10.1016/j.jcat.2021.12.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
11
|
Liu Z, Guan B, Jiang H, Wei Y, Wu X, Zhou J, Lin H, Huang Z. Exploring the optimal ratio of elemental components of the Cu/SSZ-13 framework: the reformation of NH 3-SCR properties. NEW J CHEM 2022. [DOI: 10.1039/d2nj01132h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of the ratio of skeleton elements on the performance of the Cu/SSZ-13 catalyst was studied.
Collapse
Affiliation(s)
- Ziqian Liu
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bin Guan
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Han Jiang
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yanfei Wei
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xingze Wu
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiefei Zhou
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - He Lin
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhen Huang
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|
12
|
Tian H, Ping Y, Zhang Y, Zhang Z, Sun L, Liu P, Zhu J, Yang X. Atomic layer deposition of silica to improve the high-temperature hydrothermal stability of Cu-SSZ-13 for NH 3 SCR of NO x. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126194. [PMID: 34492958 DOI: 10.1016/j.jhazmat.2021.126194] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 06/13/2023]
Abstract
The improvement of stability is a crucial and challenging issue for industrial catalyst, which affects not only the service time but also the cost of catalyst. This is especially prominent for that applied in harsh environment atmospheres, such as the exhaust of diesel vehicles. Herein, we reported a new strategy to improve the high-temperature hydrothermal stability of Cu-SSZ-13, which is a promising catalyst for the treatment of exhaust emitted from diesel vehicles through the NH3-SCR NOx route. Different from that reported in literature, we managed to improve the high-temperature hydrothermal stability of Cu-SSZ-13 by coating the surface with a nanolayer of stable SiO2 material using the atomic layer deposition (ALD) method. The coating of SiO2 layers effectively suppressed the leaching of alumina from the SSZ-13 molecular sieve even after the hydrothermal aging at 800 °C for 16 h with 12.5% water in air. Meanwhile, the ultra-thin SiO2 nanolayer does not block the pores of zeolites and affect the catalytic activity of Cu-SSZ-13 contribute to the superiority of the ALD technology.
Collapse
Affiliation(s)
- Heyuan Tian
- State Key Laboratory of Rare Earth Resource Utilization, Jilin Province Key Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Yuan Ping
- SPIC Yuanda Environmental Protection Catalyst Co., Ltd, Chongqing 401336, China
| | - Yibo Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Jilin Province Key Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Jiangxi 341000, China.
| | - Zeshu Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Jilin Province Key Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Liwei Sun
- State Key Laboratory of Rare Earth Resource Utilization, Jilin Province Key Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
| | - Peng Liu
- State Key Laboratory of Rare Earth Resource Utilization, Jilin Province Key Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Junjiang Zhu
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, Hubei, China.
| | - Xiangguang Yang
- State Key Laboratory of Rare Earth Resource Utilization, Jilin Province Key Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; University of Science and Technology of China, Hefei 230026, Anhui, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Jiangxi 341000, China.
| |
Collapse
|
13
|
Ji J, Jing M, Wang X, Tan W, Guo K, Li L, Wang X, Song W, Cheng L, Sun J, Song W, Tang C, Liu J, Dong L. Activating low-temperature NH3-SCR catalyst by breaking the strong interface between acid and redox sites: A case of model Ce2(SO4)3-CeO2 study. J Catal 2021. [DOI: 10.1016/j.jcat.2021.05.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
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.
Collapse
Affiliation(s)
- Guiying Xu
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | | | | | | | | |
Collapse
|