Adsorption and catalytic decomposition of dimethyl sulfide on H-BEA zeolite |
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| Affiliation: | 1. Department of Materials Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi 316-8511, Japan;2. Department of Materials Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi 316-8511, Japan;3. Research Reactor Institute, Kyoto University, 2-1010 Asashiro-nishi, Kumatori, Sennan, Osaka 590-0494, Japan;1. School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China;2. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China;3. School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, PR China;1. Center for Computational Chemistry and Molecular Simulation, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China;2. School of Chemistry and Materials Science, Ludong University, Yantai, 264025, China;3. Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China;4. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610500, China;1. School of Chemical Engineering, Faculty of Engineering, Architecture and Information Technology, University of Queensland, St Lucia, QLD, 4072, Australia;2. State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai, 200241, PR China;3. Australian Institute of Bioengineering and Nanotechnology (AIBN), University of Queensland, St Lucia, QLD, 4072, Australia;1. Department of Chemical Engineering, University of Engineering and Technology Lahore, Pakistan;2. Department of Process and Energy (Energy Technology), Delft University of Technology, 2628CB, Delft, the Netherlands |
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| Abstract: | Catalytic direct decomposition of dimethyl sulfide (DMS) was performed using solid acid catalysts to develop an on-site hydrogen-free desulfurization system for utilization in small systems, such as fuel cells. DMS was decomposed to CH3SH and H2S at 500 °C on SiO2–Al2O3 and various zeolite catalysts. Among the catalysts, H-BEA zeolite with Si/Al = 18.5 (H-BEA-18.5) showed the highest performance for DMS decomposition at 500 °C. While the catalytic activity at 500 °C maintained a DMS conversion of greater than 30% for up to 114 h, a large amount of carbon deposition caused gradual deterioration. At a low temperature of 400 °C, DMS decomposition to CH3SH on H-BEA-18.5 continued for 100 h with a stable conversion of approximately 30%, although the adsorption of DMS on the catalyst surface was also confirmed. To achieve a high performance for the DMS decomposition, high temperatures were required to avoid the adsorption of sulfur species. |
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| Keywords: | Desulfurization Dimethyl sulfide Solid acid catalyst H-BEA zeolite Desorption behavior |
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