Towards the insights into the deactivation behavior of acetylene hydrogenation catalyst  

作　　者：Hai-Xia Su Yang Jiao Jian-Gong Shi Zhi-Wei Yuan Di Zhang Xu-Peng Wang Jing Ren Dan Liu Jian-Zhou Gui Hai-Yang Gao Xiao-Li Xu 

机构地区：[1]State Key Laboratory of Separation Membranes&Membrane Processes,Tianjin Key Laboratory of Green Chemical Technology and Process Engineering,School of Material Science and Engineering,Tiangong University,Tianjin,300387,China [2]Institute of Engineering Technology,Sinopec Catalyst Co.,Ltd,Beijing,101100,China [3]State Key Laboratory of Separation Membranes and Membrane Processes,Tianjin Key Laboratory of Green Chemical Technology and Process Engineering,School of Chemistry,Tiangong University,Tianjin,300387,China

出　　处：《Petroleum Science》2024年第2期1405-1414,共10页石油科学（英文版）

基　　金：the financial support from the Sinopec Catalyst Co.Ltd.,China。

摘　　要：A series of model catalysts were obtained by treating commercial fresh and spent catalysts unloaded from the factory with different methods, including green oil dipping, extraction and high-temperature regeneration;finally, the deactivation behavior of the commercial catalyst for acetylene hydrogenation were studied. The influence of various possible deactivation factors on the catalytic performance was elucidated via detailed structural characterization, surface composition analysis, and activity evaluation.The results showed that green oil, carbon deposit and sintering of active metal were the main reasons for deactivation, among which green oil and carbon deposit led to rapid deactivation, while the activity could be recovered after regeneration by high-temperature calcination. The sintering of active metal components was attributed to the high-temperature regeneration in hydrothermal conditions, which was slow but irreversible and accounted for permanent deactivation. Thus, optimizing the regeneration is expected to extend the service life of the commercial catalyst.

关 键 词：ACETYLENE HYDROGENATION Green oil Carbon deposit SINTERING Catalyst deactivation 

分 类 号：TQ221.211[化学工程—有机化工] TQ426