Promotional nature of Sn on Pt/CeO_(2)for the oxidative dehydrogenation of propane with carbon dioxide
作者机构：Key Laboratory of Syngas Conversion of Shaanxi ProvinceSchool of Chemistry&Chemical EngineeringShaanxi Normal UniversityXi’an 710119China Leibniz-Institut für Katalyse e.VAlbert-Einstein-Strasse 29 aRostock 18059Germany
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第5期
页 面：6237-6250页
核心收录：
学科分类：0808[工学-电气工程] 081704[工学-应用化学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
基 金：the National Natural Science Foundation of China(No.21636006) the Fundamental Research Funds for the Central Universities(No.GK201901001).G.Q.Y.acknowledges support from the China Scholarship Council
主 题：oxidative dehydrogenation carbon dioxide supported PtSn ceria
摘 要：The oxidative dehydrogenation of propane with CO_(2)(CO_(2)-ODP)is a promising technology for the efficient production of propene in tandem with CO_(2)reduction to ***,the rational design of high-performance catalysts for this green process is still challenged by limited understanding of the nature of active sites and the reaction *** this work,the effects of SnO_(2) promoter on Pt/CeO_(2)activity and propene selectivity in CO_(2)-ODP are elucidated through varying the Sn/Pt molar *** the ratio increases,propane conversion gradually decreases,while the propene selectivity *** dependences are explained by increasing the electron density of Pt through the *** strength of this effect is determined by the Sn/Pt *** to the electronic changes of Pt,CO_(2)-ODP becomes more favorable than the undesired CO_(2)reforming of ***-modified Pt–O–Ce bonds are reasonably revealed as the active sites for CO_(2)-ODP occurring through a redox mechanism involving the activation of CO_(2)over oxygen vacancies at Sn-modified Pt and CeO_(2)*** atomic-scale understandings are important guidelines for purposeful development of high-performance Pt-based catalysts for CO_(2)-ODP.
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