Allam Djaouida, Hocine Smain, Thomas Sébastien, Parkhomenko Ksenia, Roger Anne-Cécile, Kaci Samira
{"title":"铈和氧化铝对基于 CuO-ZnO 的催化剂在 CO2 加氢制甲醇中催化活性影响的比较研究","authors":"Allam Djaouida, Hocine Smain, Thomas Sébastien, Parkhomenko Ksenia, Roger Anne-Cécile, Kaci Samira","doi":"10.1007/s10562-024-04756-1","DOIUrl":null,"url":null,"abstract":"<div><p>Ternary Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> and Cu/ZnO/CeO<sub>2</sub> catalysts were prepared by polyol method and tested for gas-phase low-temperature methanol synthesis from hydrogenation of CO<sub>2</sub>. The catalysts were characterized by N<sub>2</sub> physisorption, SEM–EDX, XRD, H<sub>2</sub>-TPR and XPS. The activity of the catalysts was evaluated in a fixed-bed micro-reactor at atmospheric pressure and 40 bar at different reaction temperatures, and H<sub>2</sub>/CO<sub>2</sub> ratio of 3:1. The results showed that the nature of the promoter influenced the physicochemical properties of the catalysts as well as the catalytic activity and product selectivity. Compared with ternary Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalyst, Cu/ZnO/CeO<sub>2</sub> catalyst indicated that modifcation of CuO/ZnO catalyst with CeO<sub>2</sub> promoted the CuO dispersion, reduced the CuO crystallite size, decreased the reduction temperature of highly dispersed CuO, decreased the activation energy and improved the catalytic activity of the Cu/ZnO/CeO<sub>2</sub> catalyst.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparative Study on the Effect of Cerina and Alumina on the Catalytic Activity of CuO-ZnO Based Catalyst in CO2 Hydrogenation to Methanol\",\"authors\":\"Allam Djaouida, Hocine Smain, Thomas Sébastien, Parkhomenko Ksenia, Roger Anne-Cécile, Kaci Samira\",\"doi\":\"10.1007/s10562-024-04756-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ternary Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> and Cu/ZnO/CeO<sub>2</sub> catalysts were prepared by polyol method and tested for gas-phase low-temperature methanol synthesis from hydrogenation of CO<sub>2</sub>. The catalysts were characterized by N<sub>2</sub> physisorption, SEM–EDX, XRD, H<sub>2</sub>-TPR and XPS. The activity of the catalysts was evaluated in a fixed-bed micro-reactor at atmospheric pressure and 40 bar at different reaction temperatures, and H<sub>2</sub>/CO<sub>2</sub> ratio of 3:1. The results showed that the nature of the promoter influenced the physicochemical properties of the catalysts as well as the catalytic activity and product selectivity. Compared with ternary Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalyst, Cu/ZnO/CeO<sub>2</sub> catalyst indicated that modifcation of CuO/ZnO catalyst with CeO<sub>2</sub> promoted the CuO dispersion, reduced the CuO crystallite size, decreased the reduction temperature of highly dispersed CuO, decreased the activation energy and improved the catalytic activity of the Cu/ZnO/CeO<sub>2</sub> catalyst.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":508,\"journal\":{\"name\":\"Catalysis Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-07-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10562-024-04756-1\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-024-04756-1","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Comparative Study on the Effect of Cerina and Alumina on the Catalytic Activity of CuO-ZnO Based Catalyst in CO2 Hydrogenation to Methanol
Ternary Cu/ZnO/Al2O3 and Cu/ZnO/CeO2 catalysts were prepared by polyol method and tested for gas-phase low-temperature methanol synthesis from hydrogenation of CO2. The catalysts were characterized by N2 physisorption, SEM–EDX, XRD, H2-TPR and XPS. The activity of the catalysts was evaluated in a fixed-bed micro-reactor at atmospheric pressure and 40 bar at different reaction temperatures, and H2/CO2 ratio of 3:1. The results showed that the nature of the promoter influenced the physicochemical properties of the catalysts as well as the catalytic activity and product selectivity. Compared with ternary Cu/ZnO/Al2O3 catalyst, Cu/ZnO/CeO2 catalyst indicated that modifcation of CuO/ZnO catalyst with CeO2 promoted the CuO dispersion, reduced the CuO crystallite size, decreased the reduction temperature of highly dispersed CuO, decreased the activation energy and improved the catalytic activity of the Cu/ZnO/CeO2 catalyst.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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