Role of Ni species in ZnO supported on Silicalite-1 for efficient propane dehydrogenation

作     者：Bofeng Zhang Mingxia Song Hongwang Liu Guozhu Li Sibao Liu Li Wang Xiangwen Zhang Guozhu Liu Bofeng Zhang;Mingxia Song;Hongwang Liu;Guozhu Li;Sibao Liu;Li Wang;Xiangwen Zhang;Guozhu Liu

作者机构：Key Laboratory for Green Chemical Technology of Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Zhejiang Institute of Tianjin UniversityNingbo 315201China Haihe Laboratory of Sustainable Chemical TransformationsTianjin 300192China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2022年第35卷第3期

页      面：240-247页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Financial supports by the National Natural Science Foundation of China(22025802) the Haihe Laboratory of Sustainable Chemical Transformations(CYZC202101) 

主　　题：Propane dehydrogenation NiZn alloy Reverse hydrogen spillover Lewis acid Zeolite 

摘      要：Propane dehydrogenation(PDH)is one of the most effective technologies to produce ***-noble zinc-based catalysts have paid increasing attention because of low cost and nontoxic,compared with industrial Pt and Cr-based ***,they often suffer from limited catalytic activity and poor ***,we introduced moderate Ni into ZnO supported Silicalite-1 zeolite to increase catalytic activity and stability ***^(2+) was the definite active site and NiZn alloy facilitated the sluggish H recombination into H_(2)via reverse ***,the introduction of Ni increased Lewis acid strength caused by electron transfer from ZnO to NiZn alloy,contributing to improved *** resulted 0.5 NiZn/S-1,propene formation rate was 0.18 mol C_(3)H_(6)·(g Zn)^(-1)·h^(-1) at 550℃,which was above 1.5 times higher than that over Zn/S-1 without *** stability test,the deactivation of0.5 NiZn/S-1 was 0.019 h^(-1),which was only 1/10 of that over Zn/S-1.