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Chen X, Peng M, Xiao D, Liu H, Ma D. Fully Exposed Metal Clusters: Fabrication and Application in Alkane Dehydrogenation. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xiaowen Chen
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, People’s Republic of China
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
| | - Mi Peng
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Dequan Xiao
- Center for Integrative Materials Discovery, Department of Chemistry and Chemical and Biomedical Engineering, University of New Haven, West Haven, Connecticut 06516, United States
| | - Hongyang Liu
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, People’s Republic of China
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
| | - Ding Ma
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
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Liu J, Zeng L, Xu X, Xu J, Fang X, Bian Y, Wang X. The critical roles of hydrophobicity, surface Ru 0 and active O 2-/O 22- sites on toluene combustion on Ru/ZSM-5 with varied Si/Al ratios. Phys Chem Chem Phys 2022; 24:14209-14218. [PMID: 35647687 DOI: 10.1039/d2cp01476a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By targeting more feasible catalysts for VOC combustion, 2%Ru/ZSM-5 catalysts were fabricated by supporting RuO2, a relatively cheaper noble metal, onto HZSM-5 supports with varied Si/Al ratios for toluene combustion. The valence state distribution of Ru and the Ru/RuO2-support interaction have been explored and elucidated. It has been revealed that the catalytic activity increases with the increase of the Si/Al ratio in the order 2%Ru/ZSM-5-18 < 2%Ru/ZSM-5-40 < 2%Ru/ZSM-5-72 < 2%Ru/ZSM-5-110 < 2%Ru/ZSM-5-255 < 2%Ru/SiO2-MFI. Interestingly, the hydrophobicity of the samples improves also with the increase in the Si/Al ratio, which impedes H2O adsorption effectively and its competition for the surface-active sites with the reactants. Both RuO2 and Ru0 are detected on all the catalysts, and the Ru0 amount/ratio increases significantly with increasing the Si/Al ratio, which promotes the adsorption/activation of both toluene and O2 molecules. Furthermore, the amount of surface-active O2- and O22- is evidently improved. Therefore, the mixed interaction of higher hydrophobicity, more surface Ru0 and active oxygen sites is the major reason for the enhancement in the activity of a Ru/ZSM-5 having a higher Si/Al ratio. It is concluded that the optimal catalyst can be designed by loading Ru/RuO2 onto an MFI framework structure support with the highest Si content.
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Affiliation(s)
- Jianjun Liu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China.
| | - Lanling Zeng
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China.
| | - Xianglan Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China.
| | - Junwei Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China.
| | - Xiuzhong Fang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China.
| | - Yijun Bian
- Jiangxi Baoan New Material Technology Corporation, Ltd, Pingxiang, Jiangxi, 337000, China
| | - Xiang Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China.
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Wu H, Wang P, Du L, Jin J, Mi J, Yun J. Design of High-Humidity-Proof Hierarchical Porous P-ZIF-67(Co)-Polymer Composite Materials by Surface Modification for Highly Efficient Volatile Organic Compound Adsorption. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hao Wu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Pu Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Le Du
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Junsu Jin
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianguo Mi
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jimmy Yun
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
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Zhang J, Xu X, Zhao S, Meng X, Xiao FS. Recent advances of zeolites in catalytic oxidations of volatile organic compounds. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.03.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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