Promotion effect of sulfur impurity in alumina support on propane dehydrogenation  

作　　者：Xin-Qian Gao Wen-Cui Li Bin Qiu Jian Sheng Fan Wu An-Hui Lu 

机构地区：[1]State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China

出　　处：《Journal of Energy Chemistry》2022年第7期332-339,I0009,共9页能源化学（英文版）

基　　金：supported by the National Key Research and Development Project(2018YFA0209404);the State Key Program of the National Natural Science Foundation of China(21733002);the National Natural Science Foundation of China(U1908203)。

摘　　要：Alumina materials are widely applied either as a catalyst or support in various industrial catalytic processes. Impurities in alumina that are unfriendly to catalytic performance are inevitably present during the production processes. Facing this problem, we here report that the use of sulfur-containing alumina as the support can generate active alumina-supported platinum catalyst, which exhibits superior propylene selectivity and anti-coking ability during propane dehydrogenation. It demonstrated that the sulfur impurity in alumina is not entirely detrimental. During the reduction process, the formation of gas-phase sulfur species increased the electrons and poisoned unsaturated sites of platinum particles. The sulfur impurity in alumina can be removed through a hydrogen reduction process, and the degree of desulfurization is correlated with the operating temperature. This study demonstrated that the rational use of impurity will contribute to the design of a catalyst with high reactivity for potential applications.

关 键 词：ALUMINA IMPURITY SULFUR PLATINUM Propane dehydrogenation 

分 类 号：TQ221.212[化学工程—有机化工] TQ426