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{"title":"用于乙烷化学循环氧化脱氢的卤化物离子掺杂 SrMnO3","authors":"Zifan Xing, Haitao Chen, Min Mao, Xiaocen Liang, Da Song, Yang Li, Tao Long, Xiaoli Chen, Fang He","doi":"10.1002/ghg.2254","DOIUrl":null,"url":null,"abstract":"<p>The chemical looping oxidative dehydrogenation (CL-ODH) of ethane represents a highly effective approach for converting ethane into the value-added product ethylene. This investigation focused on the synthesis of SrMnO<sub>3</sub> and its halide ions doped derivatives (SrMnO<sub>3</sub>Cl and SrMnO<sub>3</sub>Br) through the sol-gel method. The performance of these perovskites, employed as oxygen carriers in CL-ODH of ethane, was explored. The results unveiled several advantageous outcomes arising from the incorporation of halide ions (Cl<sup>−</sup> and Br<sup>−</sup>) with larger radius into the oxygen sites of the SrMnO<sub>3</sub> perovskite. Halide ions doping notably induced cell volume expansion and enhanced lattice fringe spacing. Furthermore, it contributed to elevated oxygen vacancy concentration, increased Mn<sup>4+</sup>/Mn<sup>3+</sup> molar ratio, and improved oxygen ions mobility within the bulk lattice. Fixed-bed experiments demonstrated that these redox catalysts, doped with halide ions, exhibited outstanding activity and stability during cycling tests, exhibiting enhanced both ethylene selectivity and yield in CL-ODH of ethane. In summary, the introduction of halide ions into SrMnO<sub>3</sub> emerges as a promising strategy for enhancing the performance of CL-ODH in ethane conversion for SrMnO<sub>3</sub> based oxygen carriers. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.</p>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Halide ions doped SrMnO3 for chemical looping oxidative dehydrogenation of ethane\",\"authors\":\"Zifan Xing, Haitao Chen, Min Mao, Xiaocen Liang, Da Song, Yang Li, Tao Long, Xiaoli Chen, Fang He\",\"doi\":\"10.1002/ghg.2254\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The chemical looping oxidative dehydrogenation (CL-ODH) of ethane represents a highly effective approach for converting ethane into the value-added product ethylene. This investigation focused on the synthesis of SrMnO<sub>3</sub> and its halide ions doped derivatives (SrMnO<sub>3</sub>Cl and SrMnO<sub>3</sub>Br) through the sol-gel method. The performance of these perovskites, employed as oxygen carriers in CL-ODH of ethane, was explored. The results unveiled several advantageous outcomes arising from the incorporation of halide ions (Cl<sup>−</sup> and Br<sup>−</sup>) with larger radius into the oxygen sites of the SrMnO<sub>3</sub> perovskite. Halide ions doping notably induced cell volume expansion and enhanced lattice fringe spacing. Furthermore, it contributed to elevated oxygen vacancy concentration, increased Mn<sup>4+</sup>/Mn<sup>3+</sup> molar ratio, and improved oxygen ions mobility within the bulk lattice. Fixed-bed experiments demonstrated that these redox catalysts, doped with halide ions, exhibited outstanding activity and stability during cycling tests, exhibiting enhanced both ethylene selectivity and yield in CL-ODH of ethane. In summary, the introduction of halide ions into SrMnO<sub>3</sub> emerges as a promising strategy for enhancing the performance of CL-ODH in ethane conversion for SrMnO<sub>3</sub> based oxygen carriers. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.</p>\",\"PeriodicalId\":12796,\"journal\":{\"name\":\"Greenhouse Gases: Science and Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2023-12-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Greenhouse Gases: Science and Technology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/ghg.2254\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Greenhouse Gases: Science and Technology","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ghg.2254","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
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