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Liu J, Deng C, Liu X, Shao S, Zheng P, Chen L, Wu P, Li H, Ji H, Zhu W. Single Mo Atoms Stabilized on High-Entropy Perovskite Oxide: A Frontier for Aerobic Oxidative Desulfurization. Inorg Chem 2023. [PMID: 37414580 DOI: 10.1021/acs.inorgchem.3c01085] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
The design and preparation of catalysts with both excellent stability and maximum exposure of catalytic active sites is highly desirable; however, it remains challenging in heterogeneous catalysis. Herein, a entropy-stabilized single-site Mo catalyst via a high-entropy perovskite oxide LaMn0.2Fe0.2Co0.2Ni0.2Cu0.2O3 (HEPO) with abundant mesoporous structures was initiated by a sacrificial-template strategy. The presence of electrostatic interaction between graphene oxide and metal precursors effectively inhibits the agglomeration of precursor nanoparticles in a high-temperature calcination process, thereby endowing the atomically dispersed Mo6+ coordinated with four O atoms on the defective sites of HEPO. The unique structure of single-site Mo atoms' random distribution with an atomic scale greatly enriches the oxygen vacancy and increases surface exposure of the catalytic active sites on the Mo/HEPO-SAC catalyst. As a result, the obtained Mo/HEPO-SAC exhibits robust recycling stability and ultra-high oxidation activity (turnover frequency = 3.28 × 10-2) for the catalytic removal of dibenzothiophene (DBT) with air as the oxidant, which represents the top level and is strikingly higher than the state-of-the-art oxidation desulfurization catalysts reported previously under the same or similar reaction conditions. Therefore, the finding here for the first time expands the application of single-atom Mo-supported HEPO materials into the field of ultra-deep oxidative desulfurization.
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Affiliation(s)
- Jixing Liu
- School of Chemistry and Chemical Engineering, Institution for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
- Huizhou Research Institute, Sun Yat-sen University, Huizhou, Guangdong 516081, P. R. China
| | - Chang Deng
- School of Chemistry and Chemical Engineering, Institution for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Xiangqi Liu
- School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Shijia Shao
- School of Chemistry and Chemical Engineering, Institution for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Peng Zheng
- Key Laboratory on Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Linlin Chen
- School of Chemistry and Chemical Engineering, Institution for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Peiwen Wu
- School of Chemistry and Chemical Engineering, Institution for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Huaming Li
- School of Chemistry and Chemical Engineering, Institution for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Hongbing Ji
- Huizhou Research Institute, Sun Yat-sen University, Huizhou, Guangdong 516081, P. R. China
| | - Wenshuai Zhu
- School of Chemistry and Chemical Engineering, Institution for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
- College of Chemical Engineering and Environment, State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, P. R. China
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Chu S, Li X, Prins R, Wang C, Liu Y, Wang A, Sheng Q. Preparation of ultrasmall Ni2P nanoparticles with low P/Ni ratios supported on SiO2 and an Al2O3-B2O3 mixed oxide for dibenzothiophene hydrodesulfurization. J Catal 2023. [DOI: 10.1016/j.jcat.2023.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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Liang J, Fan M, Wu M, Hua J, Cai W, Huang T, Liu Y, Liu C. In situ synthesis of MoS2 nanoflakes within a 3D mesoporous carbon framework for hydrodesulfurization of DBT. J Catal 2022. [DOI: 10.1016/j.jcat.2022.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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