1
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Zhang B, Yuan H, Liu Y, Deng Z, Douthwaite M, Dummer NF, Lewis RJ, Liu X, Luan S, Dong M, Wang T, Xu Q, Zhao Z, Liu H, Han B, Hutchings GJ. Ambient-pressure alkoxycarbonylation for sustainable synthesis of ester. Nat Commun 2024; 15:7837. [PMID: 39244602 PMCID: PMC11380687 DOI: 10.1038/s41467-024-52163-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 08/26/2024] [Indexed: 09/09/2024] Open
Abstract
Alkoxycarbonylation reactions are common in the chemical industry, yet process sustainability is limited by the inefficient utilization of CO. In this study, we address this issue and demonstrate that significant improvements can be achieved by adopting a heterogeneously catalyzed process, using a Ru/NbOx catalyst. The Ru/NbOx catalyst enables the direct synthesis of methyl propionate, a key industrial commodity, with over 98% selectivity from CO, ethylene and methanol, without any ligands or acid/base promoters. Under ambient CO pressure, a high CO utilization efficiency (336 mmolestermolCO-1h-1) is achieved. Mechanistic investigations reveal that CO undergoes a methoxycarbonyl (COOCH3) intermediate pathway, attacking the terminal carbon atom of alkene and yielding linear esters. The origins of prevailing linear regioselectivity in esters are revealed. The infrared spectroscopic feature of the key COOCH3 species is observed at 1750 cm-1 (C=O vibration) both experimentally and computationally. The broad substrate applicability of Ru/NbOx catalyst for ester production is demonstrated. This process offers a sustainable and efficient approach with high CO utilization and atom economy for the synthesis of esters.
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Affiliation(s)
- Bin Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK
| | - Haiyang Yuan
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, 200237, Shanghai, China
| | - Ye Liu
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, Hubei, China
| | - Zijie Deng
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Mark Douthwaite
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK.
| | - Nicholas F Dummer
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK
| | - Richard J Lewis
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK
| | - Xingwu Liu
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd, Huairou District, 101400, Beijing, China
| | - Sen Luan
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Minghua Dong
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Tianjiao Wang
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Qingling Xu
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China.
| | - Zhijuan Zhao
- Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
| | - Huizhen Liu
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China.
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, CAS Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Graham J Hutchings
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF24 4HQ, UK
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2
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Yuan H, Zhu C, Hou Y, Yang HG, Wang H. Optimizing the Lattice Nitrogen Coordination to Break the Performance Limitation of Metal Nitrides for Electrocatalytic Nitrogen Reduction. JACS AU 2024; 4:3038-3048. [PMID: 39211580 PMCID: PMC11350572 DOI: 10.1021/jacsau.4c00377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 08/08/2024] [Accepted: 08/12/2024] [Indexed: 09/04/2024]
Abstract
Metal nitrides (MNs) are attracting enormous attention in the electrocatalytic nitrogen reduction reaction (NRR) because of their rich lattice nitrogen (Nlat) and the unique ability of Nlat vacancies to activate N2. However, continuing controversy exists on whether MNs are catalytically active for NRR or produce NH3 via the reductive decomposition of Nlat without N2 activation in the in situ electrochemical conditions, let alone the rational design of high-performance MN catalysts. Herein, we focus on the common rocksalt-type MN(100) catalysts and establish a quantitative theoretical framework based on the first-principles microkinetic simulations to resolve these puzzles. The results show that the Mars-van Krevelen mechanism is kinetically more favorable to drive the NRR on a majority of MNs, in which Nlat plays a pivotal role in achieving the Volmer process and N2 activation. In terms of stability, activity, and selectivity, we find that MN(100) with moderate formation energy of Nlat vacancy (E vac) can achieve maximum activity and maintain electrochemical stability, while low- or high-E vac ones are either unstable or catalytically less active. Unfortunately, owing to the five-coordinate structural feature of Nlat on rocksalt-type MN(100), this maximum activity is limited to a yield of NH3 of only ∼10-15 mol s-1 cm-2. Intriguingly, we identify a volcano-type activity-regulating role of the local structural features of Nlat and show that the four-coordinate Nlat can exhibit optimal activity and overcome the performance limitation, while less coordinated Nlat fails. This work provides, arguably for the first time, an in-depth theoretical insight into the activity and stability paradox of MNs for NRR and underlines the importance of reaction kinetic assessment in comparison with the prevailing simple thermodynamic analysis.
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Affiliation(s)
- Haiyang Yuan
- Key
Laboratory for Ultrafine Materials of Ministry of Education, Shanghai
Engineering Research Center of Hierarchical Nanomaterials, School
of Materials Science and Engineering, East
China University of Science and Technology, Shanghai 200237, China
| | - Chen Zhu
- Key
Laboratory for Ultrafine Materials of Ministry of Education, Shanghai
Engineering Research Center of Hierarchical Nanomaterials, School
of Materials Science and Engineering, East
China University of Science and Technology, Shanghai 200237, China
| | - Yu Hou
- Key
Laboratory for Ultrafine Materials of Ministry of Education, Shanghai
Engineering Research Center of Hierarchical Nanomaterials, School
of Materials Science and Engineering, East
China University of Science and Technology, Shanghai 200237, China
| | - Hua Gui Yang
- Key
Laboratory for Ultrafine Materials of Ministry of Education, Shanghai
Engineering Research Center of Hierarchical Nanomaterials, School
of Materials Science and Engineering, East
China University of Science and Technology, Shanghai 200237, China
| | - Haifeng Wang
- State
Key Laboratory of Green Chemical Engineering and Industrial Catalysis,
Center for Computational Chemistry and Research Institute of Industrial
Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
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3
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Nishiwaki E, Rice PS, Kuo DY, Dou FY, Pyka A, Reid B, Nguyen HA, Stuve EM, Raugei S, Cossairt BM. Ni 2P active site ensembles tune electrocatalytic nitrate reduction selectivity. Chem Commun (Camb) 2024; 60:6941-6944. [PMID: 38885011 DOI: 10.1039/d4cc01834f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
We demonstrate that active site ensembles on transition metal phosphides tune the selectivity of the nitrate reduction reaction. Using Ni2P nanocrystals as a case study, we report a mechanism involving competitive co-adsorption of H* and NOx* intermediates. A near 100% faradaic efficiency for nitrate reduction over hydrogen evolution is observed at -0.4 V, while NH3 selectivity is maximized at -0.2 V vs. RHE.
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Affiliation(s)
- Emily Nishiwaki
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
| | - Peter S Rice
- Pacific Northwest National Laboratory, Richland, Washington, WA 99352, USA
| | - Ding-Yuan Kuo
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
| | - Florence Y Dou
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
| | - Anthony Pyka
- Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | - Bryce Reid
- Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | - Hao A Nguyen
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
| | - Eric M Stuve
- Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | - Simone Raugei
- Pacific Northwest National Laboratory, Richland, Washington, WA 99352, USA
| | - Brandi M Cossairt
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
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4
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Zhou C, Chen C, Hu P, Wang H. Topology-Determined Structural Genes Enable Data-Driven Discovery and Intelligent Design of Potential Metal Oxides for Inert C-H Bond Activation. J Am Chem Soc 2023; 145:21897-21903. [PMID: 37766450 DOI: 10.1021/jacs.3c06166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
The identification of appropriate structural genes that influence the active-site configuration for a given reaction is critical for discovering potential catalysts with reduced reaction barriers. In this study, we introduce bulk-phase topology-derived tetrahedral descriptors as a means of expressing a catalyst's "material structural genes". We combine this approach with an interpretable machine learning model to accurately and efficiently predict the effective barrier associated with methane C-H bond cleavage across a wide range of metal oxides (MOs). These structural genes enable high-throughput catalyst screening for low-temperature methane activation and ultimately identify 13 candidate catalysts from a pool of 9095 MOs that are recommended for experimental synthesis. The topology-based method that we describe can also be extended to facilitate high-throughput catalyst screening and design for other dehydrogenation reactions.
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Affiliation(s)
- Chuan Zhou
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai, 200237, China
| | - Chen Chen
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai, 200237, China
| | - P Hu
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai, 200237, China
- School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG, U.K
| | - Haifeng Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai, 200237, China
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5
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Che Y, Liu X, Shen Z, Zhang K, Hu X, Chen A, Zhang D. Improved N 2 Selectivity of MnO x Catalysts for NO x Reduction by Engineering Bridged Mn 3+ Sites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:7434-7443. [PMID: 37200447 DOI: 10.1021/acs.langmuir.3c00663] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Mn-based catalysts are promising for selective catalytic reduction (SCR) of NOx with NH3 at low temperatures due to their excellent redox capacity. However, the N2 selectivity of Mn-based catalysts is an urgent problem for practical application owing to excessive oxidizability. To solve this issue, we report a Mn-based catalyst using amorphous ZrTiOx as the support (Mn/ZrTi-A) with both excellent low-temperature NOx conversion and N2 selectivity. It is found that the amorphous structure of ZrTiOx modulates the metal-support interaction for anchoring the highly dispersed active MnOx species and constructs a uniquely bridged Mn3+ bonded with the support through oxygen linked to Ti4+ and Zr4+, respectively, which regulates the optimal oxidizability of the MnOx species. As a result, Mn/ZrTi-A is not conducive to the formation of ammonium nitrate that readily decomposes to N2O, thus further increasing N2 selectivity. This work investigates the role of an amorphous support in promoting the N2 selectivity of a manganese-based catalyst and sheds light on the design of efficient low-temperature deNOx catalysts.
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Affiliation(s)
- Yue Che
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Xiangyu Liu
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Zhi Shen
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Kai Zhang
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Xiaonan Hu
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Aling Chen
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
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6
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Guo J, Gan F, Zhao Y, He J, Wang B, Gao T, Jiang X, Ma S. Revealing the crystal facet effect on N 2O formation during the NH 3-SCR over α-MnO 2 catalysts. RSC Adv 2023; 13:4032-4039. [PMID: 36756579 PMCID: PMC9890662 DOI: 10.1039/d2ra06744g] [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: 10/25/2022] [Accepted: 01/16/2023] [Indexed: 01/29/2023] Open
Abstract
The detailed atomic-level mechanism of the effect induced by engineering the crystal facet of α-MnO2 catalysts on N2O formation during ammonia-selective catalytic reduction (NH3-SCR) was ascertained by combining density functional theory (DFT) calculations and thermodynamics/kinetic analysis. The surface energies of α-MnO2 with specific (100), (110), and (310) exposed planes were calculated, and the adsorptions of NH3, NO, and O2 on three surfaces were analyzed. The adsorption energies showed that NH3 and NO molecules could be strongly adsorbed on the surface of the α-MnO2 catalyst, while the adsorption of O2 was weak. Moreover, the key steps in the oxidative dehydrogenation of NH3 and the formation of NH2NO as well as dissociation of NH2 were studied to evaluate the catalytic ability of NH3-SCR reaction and N2 selectivity. The results revealed that the α-MnO2 catalyst exposed with the (310) plane exhibited the best NH3-SCR catalytic performance and highest N2 selectivity, mainly due to its low energy barriers in NH3 dehydrogenation and NH2NO generation, and difficulty in NH2 dissociation. This study deepens the comprehension of the facet-engineering of α-MnO2 on inhibiting N2O formation during the NH3-SCR, and points out a strategy to improve their catalytic ability and N2 selectivity for the low-temperature NH3-SCR process.
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Affiliation(s)
- Jundong Guo
- College of Architecture and Environment, Sichuan University Chengdu 610065 China
| | - Fengli Gan
- College of Architecture and Environment, Sichuan University Chengdu 610065 China
| | - Yifan Zhao
- College of Architecture and Environment, Sichuan University Chengdu 610065 China
| | - Jinglin He
- College of Architecture and Environment, Sichuan University Chengdu 610065 China
| | - Bangda Wang
- College of Architecture and Environment, Sichuan University Chengdu 610065 China .,College of Carbon Neutrality Future Technology, Sichuan University Chengdu 610065 China.,National Engineering Research Center for Flue Gas Desulfurization, Sichuan University Chengdu 610065 China
| | - Tao Gao
- Institute of Atomic and Molecular Physics, Sichuan UniversityChengdu 610065China
| | - Xia Jiang
- College of Architecture and Environment, Sichuan University Chengdu 610065 China .,College of Carbon Neutrality Future Technology, Sichuan University Chengdu 610065 China.,National Engineering Research Center for Flue Gas Desulfurization, Sichuan University Chengdu 610065 China
| | - Shenggui Ma
- College of Architecture and Environment, Sichuan University Chengdu 610065 China .,College of Carbon Neutrality Future Technology, Sichuan University Chengdu 610065 China.,National Engineering Research Center for Flue Gas Desulfurization, Sichuan University Chengdu 610065 China
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7
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Guo P, Deák P, Fu X, Frauenheim T, Xiao J. Fundamental Limit of Selectivity in Photocatalytic Denitrification over Titania. J Phys Chem Lett 2022; 13:11051-11058. [PMID: 36414016 DOI: 10.1021/acs.jpclett.2c02506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Although photocatalytic decomposition of NO (deNO) into N2 and O2 is low-cost and non-polluting, it has a low NO conversion efficiency. Establishing the activity and selectivity trend among active sites is an important base to explore and improve the deNO processes. Because the experimental performances are determined by the reaction rate, it is worthwhile to investigate the kinetic limiting steps calculated by comparative microkinetic modeling. We found that, without illumination, N2 production is inactive over various TiO2 surfaces/sites, but photogenerated holes can break the scaling relation of the dark condition by weakening O2* adsorption, leading to a significant increase in deNO activity on defective titania surfaces. However, the low N2 selectivity can be attributed to the small strength of N2O adsorption. In contrast, the N2 selectivity is enhanced in Ti-modified zeolite because of a stronger N2O* adsorption. We demonstrate here that the reaction phase diagram analysis can clearly establish a global picture of reaction activity and selectivity over various catalytic sites. In combination with microkinetic modeling, it can effectively determine the kinetic limits, providing insights to improve the design of photocatalysts.
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Affiliation(s)
- Pu Guo
- Bremen Center for Computational Materials Science, University of Bremen, Post Office Box 330440, D-28334Bremen, Germany
| | - Peter Deák
- Bremen Center for Computational Materials Science, University of Bremen, Post Office Box 330440, D-28334Bremen, Germany
- Computational Science Research Center, 10 East Xibeiwang Road, Beijing100193, People's Republic of China
| | - Xiaoyan Fu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, Liaoning116023, People's Republic of China
| | - Thomas Frauenheim
- Bremen Center for Computational Materials Science, University of Bremen, Post Office Box 330440, D-28334Bremen, Germany
- Computational Science Research Center, 10 East Xibeiwang Road, Beijing100193, People's Republic of China
- Computational Science and Applied Research Institute (CSAR), Shenzhen, Guangdong518110, People's Republic of China
| | - Jianping Xiao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, Liaoning116023, People's Republic of China
- Dalian National Laboratory for Clean Energy, Dalian, Liaoning116023, People's Republic of China
- University of Chinese Academy of Sciences, Beijing100049, People's Republic of China
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8
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Lin CH, Qin RC, Cao N, Wang D, Liu CG. Synergistic Effects of Keggin-Type Phosphotungstic Acid-Supported Single-Atom Catalysts in a Fast NH 3-SCR Reaction. Inorg Chem 2022; 61:19156-19171. [DOI: 10.1021/acs.inorgchem.2c02759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Chun-Hong Lin
- Department of Chemistry, Faculty of Science, Beihua University, Jilin City132013, P. R. China
- Special Ammunition Research Institute, North Huaan Industry Group Co., Ltd., Qiqihar161046, P. R. China
- College of Chemical Engineering, Northeast Electric Power University, Jilin City132012, P. R. China
| | - Rui-Cheng Qin
- Department of Chemistry, Faculty of Science, Beihua University, Jilin City132013, P. R. China
| | - Ning Cao
- College of Chemical Engineering, Northeast Electric Power University, Jilin City132012, P. R. China
| | - Dan Wang
- Department of Chemistry, Faculty of Science, Beihua University, Jilin City132013, P. R. China
| | - Chun-Guang Liu
- Department of Chemistry, Faculty of Science, Beihua University, Jilin City132013, P. R. China
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9
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Yuan HY, Sun N, Chen J, Yang HG, Hu P, Wang H. Activity Self-Optimization Steered by Dynamically Evolved Fe 3+@Fe 2+ Double-Center on Fe 2O 3 Catalyst for NH 3-SCR. JACS AU 2022; 2:2352-2358. [PMID: 36311837 PMCID: PMC9597592 DOI: 10.1021/jacsau.2c00424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/01/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
Identification of the active centers dynamically stable under the reaction condition is of paramount importance but challenging because of the limited knowledge of steady-state chemistry on catalysts at the atomic level. Herein, focusing on the Fe2O3 catalyst for the selective catalytic reduction of NO with NH3 (NH3-SCR) as a model system, we reveal quantitatively the self-evolving Fe3+@Fe2+ (∼1:1) double-centers under the in-situ condition by the first-principles microkinetic simulations, which enables the accurate prediction of the optimal industry operating temperature (590 K). The cooperation of this double-center achieves the self-optimization of catalytic activity and rationalizes the intrinsic origin of Fe2O3 catalyzing NH3-SCR at middle-high temperatures instead of high temperatures. Our findings demonstrate the atomic-level self-evolution of active sites and the dynamically adjusted activity variation of the catalyst under the in-situ condition during the reaction process and provide insights into the reaction mechanism and catalyst optimization.
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Affiliation(s)
- Hai Yang Yuan
- Key
Laboratory for Advanced Materials and Joint International Research
Laboratory of Precision Chemistry and Molecular Engineering, Feringa
Nobel Prize Scientist Joint Research Center, Research Institute of
Industrial Catalysis and Centre for Computational Chemistry, School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- Key
Laboratory for Ultrafine Materials of Ministry of Education, Shanghai
Engineering Research Center of Hierarchical Nanomaterials, School
of Materials Science and Engineering, East
China University of Science and Technology, Shanghai 200237, China
| | - Ningning Sun
- Key
Laboratory for Advanced Materials and Joint International Research
Laboratory of Precision Chemistry and Molecular Engineering, Feringa
Nobel Prize Scientist Joint Research Center, Research Institute of
Industrial Catalysis and Centre for Computational Chemistry, School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jianfu Chen
- Key
Laboratory for Advanced Materials and Joint International Research
Laboratory of Precision Chemistry and Molecular Engineering, Feringa
Nobel Prize Scientist Joint Research Center, Research Institute of
Industrial Catalysis and Centre for Computational Chemistry, School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hua Gui Yang
- Key
Laboratory for Ultrafine Materials of Ministry of Education, Shanghai
Engineering Research Center of Hierarchical Nanomaterials, School
of Materials Science and Engineering, East
China University of Science and Technology, Shanghai 200237, China
| | - P. Hu
- Key
Laboratory for Advanced Materials and Joint International Research
Laboratory of Precision Chemistry and Molecular Engineering, Feringa
Nobel Prize Scientist Joint Research Center, Research Institute of
Industrial Catalysis and Centre for Computational Chemistry, School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- School
of Chemistry and Chemical Engineering, The
Queen’s University of Belfast, Belfast BT9, U.K.
| | - Haifeng Wang
- Key
Laboratory for Advanced Materials and Joint International Research
Laboratory of Precision Chemistry and Molecular Engineering, Feringa
Nobel Prize Scientist Joint Research Center, Research Institute of
Industrial Catalysis and Centre for Computational Chemistry, School
of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
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10
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NO Reduction Reaction by Kiwi Biochar-Modified MnO2 Denitrification Catalyst: Redox Cycle and Reaction Process. Catalysts 2022. [DOI: 10.3390/catal12080870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
NO is a major environmental pollutant. MnO2 is often used as a denitrification catalyst with poor N2 selectivity and weak SO2 resistance. Kiwi twig biochar was chosen to modify MnO2 samples by using the hydrothermal method. The NO conversion rates of the biochar-modified samples were >90% at 125–225 °C. Kiwi twig biochar made the C2MnO2 sample with a larger specific surface area, a higher number of acidic sites and Oβ/Oα molar ratio, leading to more favorable activity at high temperatures and better SO2 resistance. Moreover, the inhibition of the NH3 oxidation reaction and the Mn3+ → Mn4+ process played a crucial role in the redox cycle. What was more, Brønsted acidic sites present on the C1MnO2 sample participate in the reaction more rapidly. This study identified the role of biochar in the reaction process and provides a reference for the wide application of biochar.
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11
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Self-assembled biomineralized MnOx for low temperature selective catalytic reduction of NOx. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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12
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Song L, Shu G, Ma K, Liu C, Tang S, Zhong S, Yue H, Liang B. A Bifunctional Multishell Catalyst with a Wide Operating Temperature Window for NO x Abatement by Ammonia-Selective Catalytic Reduction. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lei Song
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Guoqiang Shu
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Kui Ma
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Changjun Liu
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, China
| | - Siyang Tang
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Shan Zhong
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Hairong Yue
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, China
| | - Bin Liang
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, China
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13
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Chen L, Shen Y, Wang Q, Wang X, Wang Y, Li B, Li S, Zhang S, Li W. Phosphate on ceria with controlled active sites distribution for wide temperature NH 3-SCR. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:128148. [PMID: 34973577 DOI: 10.1016/j.jhazmat.2021.128148] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/14/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Practical catalysts that work well at a wide operation window for selective catalytic reduction of NOx by NH3 (NH3-SCR) are essential for the purification of non-isothermal emission such as vehicle exhaust. However, NH3-SCR catalyst with high low-temperature performance has excellent NO activation and oxidation ability, leading inevitably to NH3-intermediates over-oxidation and N2 selectivity deterioration at high operation temperatures. By far the best performance ceria-based catalyst with a super-wide temperature window of 175-400 oC for 90% NOx conversion in ideal environment and 225-475 oC for 90% NOx conversion by addition of 50 ppm SO2 and 5% H2O is obtained via distributing phosphate over the outer of ceria. NH3 protection strategy is the key for keeping high-temperature activity. Brønsted acidity surged as the formation of P-OH network via a charge compensatory mechanism of phosphate. NH3 was prone to be captured by the surface P-OH network, forming NH4+ species, avoiding being oxidized and contributing to both low and high temperature activity. NO can also be readily absorbed and oxidized to the absorbed NO2(ad) species over phosphate as reflected by in situ DRIFTS and DFT calculation, providing a facile pathway for 'fast SCR' by reacting with NH4+ species to form N2 and H2O. The reaction followed the L-H mechanism and contributed to catalytic activity under 300 oC. This directional structure fabricate strategy helps to increases the NOx conversion and N2 selectivity under a broaden temperature window. The enriched Brønsted acid sites over phosphate treated ceria were also demonstrated to have largely suppressed SO2 adsorption, which significantly slowed down the catalyst poisoning. A dynamic equilibrium between the poisoning and regeneration process can be achieved according to the shrinking-core model for each nanosphere, leading to the excellent resistance.
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Affiliation(s)
- Liang Chen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 Zhejiang, China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yao Shen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiaoli Wang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiaoxiang Wang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yaqing Wang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Beilei Li
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Sujing Li
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Shihan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Wei Li
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
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14
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Jin Q, Shen Y, Mei C, Zhang Y, Zeng Y. Catalytic removal of NO and dioxins over W-Zr-Ox/Ti-Ce-Mn-Ox from flue gas: Performance and mechanism study. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.05.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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16
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Zhang Y, Han B, Chen Y, Xia K, Gao Q, Zhou C. Understanding the mechanism of selective catalytic reduction on spinel TiMn2O4(001) surface. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2021.112070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Zhou M, Wang HF. Insight into the photoexcitation effect on the catalytic activation of H2 and C-H bonds on TiO2(110) surface. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.12.074] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Kang H, Wu M, Li S, Wei C, Chen X, Chen J, Jing F, Chu W, Liu Y. Converting Poisonous Sulfate Species to an Active Promoter on TiO 2 Predecorated MnO x Catalysts for the NH 3-SCR Reaction. ACS APPLIED MATERIALS & INTERFACES 2021; 13:61237-61247. [PMID: 34927431 DOI: 10.1021/acsami.1c19625] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
MnOx-based catalysts possess excellent low-temperature NH3 selective catalytic reduction (NH3-SCR) activity, but the poor SO2/sulfate poisoning resistance and the narrow active-temperature window limit their application for NOx removal. Herein, TiO2 nanoparticles and sulfate were successively introduced into MnOx-based catalysts to modulate the NH3-SCR activity, and the active-temperature window (NO conversion above 80%, T80) was significantly broadened to 100-350 °C (SO42--TiO2@MnOx) compared to that of the pristine MnOx catalyst (ca. T80: 100-268 °C). Combined with advanced characterizations and control experiments, it was clearly shown that the poisonous effects of sulfate on the MnOx catalyst could be efficiently inhibited in the presence of TiO2 species due to the interaction between sulfate and TiO2 to form a solid superacid (SO42--TiO2) species as NH3 adsorption sites for the low-temperature process. Furthermore, such solid superacid (SO42--TiO2) species could weaken the redox ability to inhibit the excessive oxidation of NH3 and thus enhance the high-temperature activity significantly. This work not only puts forward the TiO2 predecoration strategy that converts sulfate to a promoter to broaden the active temperature window but also experimentally proves that the requirement of redox ability and acidity in the MnOx-based NH3-SCR catalyst was dependent on the reaction temperature range.
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Affiliation(s)
- Hui Kang
- Department of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, China
| | - Mengxia Wu
- Department of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Shiyan Li
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunhong Wei
- Department of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, China
| | - Xiaoping Chen
- Department of Environment, Tsinghua University, Beijing 100084, PR China
| | - Jianjun Chen
- Department of Environment, Tsinghua University, Beijing 100084, PR China
| | - Fangli Jing
- Department of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Wei Chu
- Department of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yuefeng Liu
- Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, China
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19
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Xie C, Zhu B, Sun Y, Li F, Song W. Understanding the roles of copper dopant and oxygen vacancy in promoting nitrogen oxides removal over iron-based catalyst surface: A collaborative experimental and first-principles study. J Colloid Interface Sci 2021; 612:584-597. [PMID: 35016019 DOI: 10.1016/j.jcis.2021.12.102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/07/2021] [Accepted: 12/16/2021] [Indexed: 10/19/2022]
Abstract
In this work, we proposed a novel strategy of copper (Cu) doping to enhance the nitrogen oxides (NOx) removal efficiency of iron (Fe)-based catalysts at low temperature through a simple citric acid mixing method, which is critical for its practical application. The doping of Cu significantly improves the deNOx performance of Fe-based catalysts below 200 °C, and the optimal catalyst is (Cu0.22Fe1.78)1-δO3, which deNOx efficiency can reach 100% at 160-240 °C. From the macro aspects, the main reasons for the excellent catalytic activity of the (Cu0.22Fe1.78)1-δO3 catalyst are the large number of oxygen vacancies (Ovac), appropriate Fe3+ and Cu2+ contents, stronger surface acidity and redox ability. From the micro aspects, the Ovac plays a key role in enhancing molecular adsorption, oxidation, and the deNOx reaction over the Fe-based catalyst surface, which promoting order is CuOvac > Ovac > Cu. This work provides a new insight for the mechanism study of oxygen vacancy engineering and also accelerates the development of CuFe bimetal composite catalysts at low temperature.
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Affiliation(s)
- Chaoyue Xie
- School of Petroleum Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Baozhong Zhu
- School of Petroleum Engineering, Changzhou University, Changzhou, Jiangsu 213164, China.
| | - Yunlan Sun
- School of Petroleum Engineering, Changzhou University, Changzhou, Jiangsu 213164, China.
| | - Fan Li
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangdong, Guangzhou 510640, China
| | - Weiyi Song
- School of Petroleum Engineering, Changzhou University, Changzhou, Jiangsu 213164, China
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20
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Lai Z, Sun N, Jin J, Chen J, Wang H, Hu P. Resolving the Intricate Mechanism and Selectivity of Syngas Conversion on Reduced ZnCr 2O x: A Quantitative Study from DFT and Microkinetic Simulations. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03579] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhuangzhuang Lai
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Ningling Sun
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Jiamin Jin
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Jianfu Chen
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Haifeng Wang
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - P. Hu
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
- School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, U.K
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21
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Yang R, Peng S, Lan B, Sun M, Zhou Z, Sun C, Gao Z, Xing G, Yu L. Oxygen Defect Engineering of β-MnO 2 Catalysts via Phase Transformation for Selective Catalytic Reduction of NO. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102408. [PMID: 34337868 DOI: 10.1002/smll.202102408] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/21/2021] [Indexed: 06/13/2023]
Abstract
The catalysts for low-temperature selective catalytic reduction of NO with NH3 (NH3 -SCR) are highly desired due to the large demand in industrial furnaces. The characteristic of low-temperature requires the catalyst with rich active sites especially the redox sites. Herein, the authors obtain oxygen defect-rich β-MnO2 from a crystal phase transformation process during air calcination, by which the as-prepared γ-MnO2 nanosheet and nanorod can be conformally transformed into the corresponding β-MnO2 . Simultaneously, this transformation accompanies oxygen defects modulation resulted from lattice rearrangement. The most active β-MnO2 nanosheet with plentiful oxygen defects shows a high efficiency of > 90% NO conversion in an extremely wide operation window of ≈120-350 °C. The detailed characterizations and density functional theory (DFT) calculations reveal that the introduction of oxygen defects enhances the adsorption properties for reactants and decreases the energy barriers of *NH2 formation more than 0.3 eV (≈0.32-0.37 eV), which contributes to a high efficiency of low-temperature SCR activity. The authors finding provides a feasible approach to achieve the oxygen defect engineering and gains insight into manganese-based catalysts for low-temperature NO removal or pre-oxidation.
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Affiliation(s)
- Runnong Yang
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light IndustryGuangdong University of Technology, Guangzhou, 510006, China
| | - Shaomin Peng
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light IndustryGuangdong University of Technology, Guangzhou, 510006, China
| | - Bang Lan
- School of Chemistry and Environment, Jiaying University, Meizhou, 514015, China
| | - Ming Sun
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light IndustryGuangdong University of Technology, Guangzhou, 510006, China
| | - Zihao Zhou
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light IndustryGuangdong University of Technology, Guangzhou, 510006, China
| | - Changyong Sun
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light IndustryGuangdong University of Technology, Guangzhou, 510006, China
| | - Zihan Gao
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light IndustryGuangdong University of Technology, Guangzhou, 510006, China
| | - Guichuan Xing
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, 999078, China
| | - Lin Yu
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light IndustryGuangdong University of Technology, Guangzhou, 510006, China
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22
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Kim J, Choe YJ, Kim SH, Choi IS, Jeong K. Deciphering Evolution Pathway of Supported NO 3 • Enabled via Radical Transfer from •OH to Surface NO 3 - Functionality for Oxidative Degradation of Aqueous Contaminants. JACS AU 2021; 1:1158-1177. [PMID: 34467355 PMCID: PMC8397361 DOI: 10.1021/jacsau.1c00124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Indexed: 06/13/2023]
Abstract
NO3 • can compete with omnipotent •OH/SO4 •- in decomposing aqueous pollutants because of its lengthy lifespan and significant tolerance to background scavengers present in H2O matrices, albeit with moderate oxidizing power. The generation of NO3 •, however, is of grand demand due to the need of NO2 •/O3, radioactive element, or NaNO3/HNO3 in the presence of highly energized electron/light. This study has pioneered a singular pathway used to radicalize surface NO3 - functionalities anchored on polymorphic α-/γ-MnO2 surfaces (α-/γ-MnO2-N), in which Lewis acidic Mn2+/3+ and NO3 - served to form •OH via H2O2 dissection and NO3 • via radical transfer from •OH to NO3 - (•OH → NO3 •), respectively. The elementary steps proposed for the •OH → NO3 • route could be energetically favorable and marginal except for two stages such as endothermic •OH desorption and exothermic •OH-mediated NO3 - radicalization, as verified by EPR spectroscopy experiments and DFT calculations. The Lewis acidic strength of the Mn2+/3+ species innate to α-MnO2-N was the smallest among those inherent to α-/β-/γ-MnO2 and α-/γ-MnO2-N. Hence, α-MnO2-N prompted the rate-determining stage of the •OH → NO3 • route (•OH desorption) in the most efficient manner, as also evidenced by the analysis on the energy barrier required to proceed with the •OH → NO3 • route. Meanwhile, XANES and in situ DRIFT spectroscopy experiments corroborated that α-MnO2-N provided a larger concentration of surface NO3 - species with bi-dentate binding arrays than γ-MnO2-N. Hence, α-MnO2-N could outperform γ-MnO2-N in improving the collision frequency between •OH and NO3 - species and in facilitating the exothermic transition of NO3 - functionalities to surface NO3 • analogues per unit time. These were corroborated by a greater efficiency of α-MnO2-N in decomposing phenol, in addition to scavenging/filtration control runs and DFT calculations. Importantly, supported NO3 • species provided 5-7-fold greater efficiency in degrading textile wastewater than conventional •OH and supported SO4 •- analogues we discovered previously.
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Affiliation(s)
- Jongsik Kim
- Extreme
Materials Research Center, Korea Institute
of Science and Technology, Seoul 02792, South
Korea
| | - Yun Jeong Choe
- Extreme
Materials Research Center, Korea Institute
of Science and Technology, Seoul 02792, South
Korea
- Department
of Materials Science and Engineering, Seoul
National University, Seoul 08826, South Korea
| | - Sang Hoon Kim
- Extreme
Materials Research Center, Korea Institute
of Science and Technology, Seoul 02792, South
Korea
- Division
of Nano and Information Technology, Korea Institute of Science and
Technology School, University of Science
and Technology, Daejeon 34113, South Korea
| | - In-Suk Choi
- Department
of Materials Science and Engineering, Seoul
National University, Seoul 08826, South Korea
| | - Keunhong Jeong
- Department
of Chemistry, Korea Military Academy, Seoul 01805, South Korea
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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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Revealing the boosting role of NO for soot combustion over CeO2(111): A first-principles microkinetic modeling. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Yuan H, Yang H, Hu P, Wang H. Origin of Water-Induced Deactivation of MnO 2-Based Catalyst for Room-Temperature NO Oxidation: A First-Principles Microkinetic Study. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haiyang Yuan
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, East China University of Science and Technology, Shanghai 200237, China
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Huagui Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - P. Hu
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, East China University of Science and Technology, Shanghai 200237, China
- School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, United Kingdom
| | - Haifeng Wang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, East China University of Science and Technology, Shanghai 200237, China
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26
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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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27
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Yao Z, Li L, Liu X, Hui KN, Shi L, Zhou F, Hu M, Hui KS. Mechanistic insights into NO‒H 2 reaction over Pt/boron-doped graphene catalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 406:124327. [PMID: 33139106 DOI: 10.1016/j.jhazmat.2020.124327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 06/11/2023]
Abstract
This work presents a systematical experimental and density functional theory (DFT) studies to reveal the mechanism of NO reduction by H2 reaction over platinum nanoparticles (NPs) deposited on boron-doped graphene (denoted as Pt/BG) catalyst. Both characterizations and DFT calculations identified boron (in Pt/BG) as an additional NO adsorption site other than the widely recognized Pt NPs. Moreover, BG led to a decrease of Pt NPs size in Pt/BG, which facilitated hydrogen spillover. The mathematical and physical criteria of the Langmuir-Hinshelwood dual-site kinetic model over the Pt/BG were satisfied, indicating that adsorbed NO on boron (in Pt/BG) was further activated by H-spillover. On the other hand, Pt/graphene (Pt/Gr) demonstrated a typical Langmuir-Hinshelwood single-site mechanism where Pt NPs solely served as active sites for NO adsorption. This work helps understand NO-H2 reaction over Pt/BG and Pt/Gr catalysts in a closely mechanistic view and provides new insights into roles of active sites for improving the design of catalysts for NO abatement.
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Affiliation(s)
- Zhenhua Yao
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China
| | - Lei Li
- Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM) of Chongqing, Yangtze Normal University, Chongqing 408100, China
| | - Xuguang Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Kwun Nam Hui
- Institute of Applied Physics and Materials Engineering (IAPME) University of Macau Avenida da Universidade, Taipa, Macau, China
| | - Ling Shi
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China
| | - Furong Zhou
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China
| | - Maocong Hu
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China.
| | - K S Hui
- School of Engineering, University of East Anglia, Norwich NR4 7TJ, United Kingdom.
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Yang R, Fan Y, Ye R, Tang Y, Cao X, Yin Z, Zeng Z. MnO 2 -Based Materials for Environmental Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004862. [PMID: 33448089 DOI: 10.1002/adma.202004862] [Citation(s) in RCA: 127] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/31/2020] [Indexed: 06/12/2023]
Abstract
Manganese dioxide (MnO2 ) is a promising photo-thermo-electric-responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2 -based composites via the construction of homojunctions and MnO2 /semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2 -based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high-efficiency MnO2 -based materials for comprehensive environmental applications is provided.
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Affiliation(s)
- Ruijie Yang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Yingying Fan
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Ruquan Ye
- Department of Chemistry, State Key Lab of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China
| | - Yuxin Tang
- College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiehong Cao
- College of Materials Science and Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, Zhejiang, 310014, P. R. China
| | - Zongyou Yin
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Zhiyuan Zeng
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
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Chen J, Jia M, Hu P, Wang H. CATKINAS: A large-scale catalytic microkinetic analysis software for mechanism auto-analysis and catalyst screening. J Comput Chem 2021; 42:379-391. [PMID: 33315262 DOI: 10.1002/jcc.26464] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 12/19/2022]
Abstract
As an effective method to analyze complex catalytic reaction networks, microkinetic modeling is gaining increasing popularity in the catalytic activity evaluation and rational design of heterogeneous catalysts. An automated simulator with stable and reliable performance is especially useful and in great request. Here we introduce the CATKINAS package developed for large-scale microkinetic modeling and analysis. Featuring with a multilevel solver and a multifunctional analyzer, CATKINAS can provide both accurate solutions and various quantitative and automatic analysis for a wide range of catalytic systems. The structure and the basic workflow are overviewed with the multilevel solver particularly illustrated. Also, we take the CO methanation reaction as an example to illustrate the application and efficiency of the CATKINAS package.
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Affiliation(s)
- Jianfu Chen
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Menglei Jia
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Peijun Hu
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.,School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast, BT9 5AG, UK
| | - Haifeng Wang
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
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30
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Kang H, Wang J, Zheng J, Chu W, Tang C, Ji J, Ren R, Wu M, Jing F. Solvent-free elaboration of Ni-doped MnOx catalysts with high performance for NH3-SCR in low and medium temperature zones. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2020.111376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Chen J, Jia M, Lai Z, Hu P, Wang H. SSIA: A sensitivity-supervised interlock algorithm for high-performance microkinetic solving. J Chem Phys 2021; 154:024108. [PMID: 33445900 DOI: 10.1063/5.0032228] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Microkinetic modeling has drawn increasing attention for quantitatively analyzing catalytic networks in recent decades, in which the speed and stability of the solver play a crucial role. However, for the multi-step complex systems with a wide variation of rate constants, the often encountered stiff problem leads to the low success rate and high computational cost in the numerical solution. Here, we report a new efficient sensitivity-supervised interlock algorithm (SSIA), which enables us to solve the steady state of heterogeneous catalytic systems in the microkinetic modeling with a 100% success rate. In SSIA, we introduce the coverage sensitivity of surface intermediates to monitor the low-precision time-integration of ordinary differential equations, through which a quasi-steady-state is located. Further optimized by the high-precision damped Newton's method, this quasi-steady-state can converge with a low computational cost. Besides, to simulate the large differences (usually by orders of magnitude) among the practical coverages of different intermediates, we propose the initial coverages in SSIA to be generated in exponential space, which allows a larger and more realistic search scope. On examining three representative catalytic models, we demonstrate that SSIA is superior in both speed and robustness compared with its traditional counterparts. This efficient algorithm can be promisingly applied in existing microkinetic solvers to achieve large-scale modeling of stiff catalytic networks.
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Affiliation(s)
- Jianfu Chen
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Menglei Jia
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Zhuangzhuang Lai
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Peijun Hu
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Haifeng Wang
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
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32
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Fan H, Fan J, Chang T, Wang X, Wang X, Huang Y, Zhang Y, Shen Z. Low-temperature Fe–MnO 2 nanotube catalysts for the selective catalytic reduction of NO x with NH 3. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01181b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Fe improved the reducibility of Mn sites and reduced the oxidizing properties of bridging oxygen.
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Affiliation(s)
- Hao Fan
- Department of Environmental Sciences and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- State Key laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710049, China
| | - Jie Fan
- Department of Environmental Sciences and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Tian Chang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Xiuru Wang
- Department of Environmental Sciences and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xin Wang
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, USA
| | - Yu Huang
- State Key laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710049, China
| | - Yang Zhang
- Instrumental Analysis Center of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an 710049, China
| | - Zhenxing Shen
- Department of Environmental Sciences and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- State Key laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710049, China
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33
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Kim J, Lee S, Ha HP. Supercritical Carbon Dioxide Extraction-Mediated Amendment of a Manganese Oxide Surface Desired to Selectively Transform Nitrogen Oxides and/or Ammonia. ACS Catal 2021. [DOI: 10.1021/acscatal.0c03704] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jongsik Kim
- Extreme Materials Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, South Korea
| | - Seokhyun Lee
- Extreme Materials Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, South Korea
| | - Heon Phil Ha
- Extreme Materials Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, South Korea
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35
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Li Q, Hou Y, Xiang N, Liu Y, Huang Z. A new insight into the promotional effect of nitrogen-doping in activated carbon for selective catalytic reduction of NO X with NH 3. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 740:140158. [PMID: 32563884 DOI: 10.1016/j.scitotenv.2020.140158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/25/2020] [Accepted: 06/10/2020] [Indexed: 06/11/2023]
Abstract
A series of N-doped carbons were prepared to investigate the effect of different N-containing groups on selective catalytic reduction (SCR) of NOx with NH3. Combined the SCR activity with the results of porosity analysis and X-ray photoelectron spectroscopy, it's deduced that the pyridinic N (N-6) rather than the surface area or doped total N was mainly responsible for the promoted SCR activity. The electron paramagnetic resonance and O2-temperature programmed desorption (O2-TPD) experiments indicated that N-6 created numerous of oxygen vacancy. The NO+O2-TPD and transient response of NH3 further demonstrated that the increased oxygen vacancy enhanced the absorbability and reactivity of NOx, therefore the SCR reaction was elevated by accelerating the reaction in the Langmuir-Hinshelwood (L-H) mechanism. Furthermore, the NH3-TPD suggested that N-6 was conductive to the NH3 adsorption. In situ DRIFTs of NH3 adsorption and reaction illustrated that the increased NH3 mainly existed as NH2 species, which were quickly consumed by NO+O2, further elevated the reaction between gaseous NO and adsorbed NH3 in the Eley-Rideal (E-R) mechanism. The N-6 groups doped in the activated carbons facilitated the L-H and E-R reactions and thus promoted the SCR activity.
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Affiliation(s)
- Qiaoyan Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yaqin Hou
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Ning Xiang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yongjin Liu
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Zhanggen Huang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China.
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36
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Wang B, Wang M, Han L, Hou Y, Bao W, Zhang C, Feng G, Chang L, Huang Z, Wang J. Improved Activity and SO2 Resistance by Sm-Modulated Redox of MnCeSmTiOx Mesoporous Amorphous Oxides for Low-Temperature NH3-SCR of NO. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02567] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Bing Wang
- Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Meixin Wang
- Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Lina Han
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Yaqin Hou
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China
| | - Weiren Bao
- Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Changming Zhang
- Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Gang Feng
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, Institute of Applied Chemistry, College of Chemistry, Nanchang University, No. 999Xuefu Road, Nanchang 330031, P. R. China
| | - Liping Chang
- Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, P. R. China
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Zhanggen Huang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China
| | - Jiancheng Wang
- Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, P. R. China
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37
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Simultaneous catalytic oxidation of CO and Hg0 over Au/TiO2 catalysts: Structure and mechanism study. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110633] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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A first-principles microkinetic study on the hydrogenation of carbon dioxide over Cu(211) in the presence of water. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9639-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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Wang D, Wang CM, Yang G, Du YJ, Yang WM. First-principles kinetic study on benzene alkylation with ethanol vs. ethylene in H-ZSM-5. J Catal 2019. [DOI: 10.1016/j.jcat.2019.04.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Hao Z, Shen Z, Li Y, Wang H, Zheng L, Wang R, Liu G, Zhan S. The Role of Alkali Metal in α‐MnO
2
Catalyzed Ammonia‐Selective Catalysis. Angew Chem Int Ed Engl 2019; 58:6351-6356. [DOI: 10.1002/anie.201901771] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 03/04/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Zhifei Hao
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Zhurui Shen
- School of Materials Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Yi Li
- Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of ScienceTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 P. R. China
| | - Haitao Wang
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institude of High Energy PhysicsChinese Academy of Sciences Beijing 100049 P. R. China
| | - Ruihua Wang
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Guoquan Liu
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Sihui Zhan
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
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41
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Hao Z, Shen Z, Li Y, Wang H, Zheng L, Wang R, Liu G, Zhan S. The Role of Alkali Metal in α‐MnO
2
Catalyzed Ammonia‐Selective Catalysis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhifei Hao
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Zhurui Shen
- School of Materials Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Yi Li
- Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of ScienceTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 P. R. China
| | - Haitao Wang
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institude of High Energy PhysicsChinese Academy of Sciences Beijing 100049 P. R. China
| | - Ruihua Wang
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Guoquan Liu
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
| | - Sihui Zhan
- MOE Key Laboratory of Pollution Processes and Environmental CriteriaTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Tianjin 300350 P. R. China
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42
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Fang Z, Murayama H, Zhao Q, Liu B, Jiang F, Xu Y, Tokunaga M, Liu X. Selective mild oxidation of methane to methanol or formic acid on Fe–MOR catalysts. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01640f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective oxidation of methane to methanol or formic acid was achieved using mordenite (MOR)-supported iron catalysts with H2O2 as the oxidant.
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Affiliation(s)
- Zhihao Fang
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Haruno Murayama
- Department of Chemistry
- Graduate School of Science
- Kyushu University
- Fukuoka
- Japan
| | - Qi Zhao
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Bing Liu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Feng Jiang
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Yuebing Xu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Makoto Tokunaga
- Department of Chemistry
- Graduate School of Science
- Kyushu University
- Fukuoka
- Japan
| | - Xiaohao Liu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
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43
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Yuan H, Chen J, Wang H, Hu P. Activity Trend for Low-Concentration NO Oxidation at Room Temperature on Rutile-Type Metal Oxides. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03045] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haiyang Yuan
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jianfu Chen
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Haifeng Wang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Peijun Hu
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, U.K
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