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{"title":"用于 RWGS 反应的高效 CuCeO2-δ/SiO2 催化剂:Ce 含量和负载顺序的影响","authors":"Shan Zhao, Le Yang, Shen Yao, Yahong Dai, Shuang Chen, Jia Zeng, Aiping Jia, Hongmei Xie, Guilin Zhou","doi":"10.1002/ghg.2294","DOIUrl":null,"url":null,"abstract":"<p>The extensive use of fossil energy leads to wanton emission of CO<sub>2</sub> and serious environmental problems. The exploration of high-performance catalysts plays a pivotal role in CO<sub>2</sub> resource utilization. In this paper, CuCe<sub>y</sub>K catalysts are prepared by wet impregnation method using ordered mesoporous SiO<sub>2</sub> as support for the reverse water gas shift (RWGS) reaction. The physicochemical properties of the prepared catalysts are characterized by H<sub>2</sub>-TPR, BET, XRD, Quasi <i>in-situ</i> XPS, H<sub>2</sub>-TPD, and CO<sub>2</sub>-TPD techniques. The results demonstrate thatthe Cu<sup>0</sup> species can form synergistic effects with oxygen vacancies (O<sub>v</sub>) to enhance the CuCe<sub>y</sub>K catalytic performance. Additionally, the electronic effects between Ce and Cu not only enhances the adsorption and activation performances of the catalyst towards CO<sub>2</sub> and H<sub>2</sub> molecules, but also effectively suppresses the sintering of Cu<sup>0</sup> species, thereby enhancing the stability of the corresponding catalyst. It is worth mentioning that the Ce content also directly affects the catalytic performances of the CuCe<sub>y</sub>K catalyst. The CuCe<sub>15</sub>K catalyst with a Ce content of 15% displays excellent CO<sub>2</sub> hydrogenation performances, and the CO<sub>2</sub> conversion and CO selectivity up to 41 % and 100 % at 420 °C, respectively. © 2024 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":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High efficient CuCeO2-δ/SiO2 catalyst for RWGS reaction: impact of Ce content and loading sequence\",\"authors\":\"Shan Zhao, Le Yang, Shen Yao, Yahong Dai, Shuang Chen, Jia Zeng, Aiping Jia, Hongmei Xie, Guilin Zhou\",\"doi\":\"10.1002/ghg.2294\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The extensive use of fossil energy leads to wanton emission of CO<sub>2</sub> and serious environmental problems. The exploration of high-performance catalysts plays a pivotal role in CO<sub>2</sub> resource utilization. In this paper, CuCe<sub>y</sub>K catalysts are prepared by wet impregnation method using ordered mesoporous SiO<sub>2</sub> as support for the reverse water gas shift (RWGS) reaction. The physicochemical properties of the prepared catalysts are characterized by H<sub>2</sub>-TPR, BET, XRD, Quasi <i>in-situ</i> XPS, H<sub>2</sub>-TPD, and CO<sub>2</sub>-TPD techniques. The results demonstrate thatthe Cu<sup>0</sup> species can form synergistic effects with oxygen vacancies (O<sub>v</sub>) to enhance the CuCe<sub>y</sub>K catalytic performance. Additionally, the electronic effects between Ce and Cu not only enhances the adsorption and activation performances of the catalyst towards CO<sub>2</sub> and H<sub>2</sub> molecules, but also effectively suppresses the sintering of Cu<sup>0</sup> species, thereby enhancing the stability of the corresponding catalyst. It is worth mentioning that the Ce content also directly affects the catalytic performances of the CuCe<sub>y</sub>K catalyst. The CuCe<sub>15</sub>K catalyst with a Ce content of 15% displays excellent CO<sub>2</sub> hydrogenation performances, and the CO<sub>2</sub> conversion and CO selectivity up to 41 % and 100 % at 420 °C, respectively. © 2024 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\":\"2024-07-16\",\"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.2294\",\"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.2294","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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