The nature of the deactivation of hydrothermally stable Ni/SiO2–Al2O3 catalyst in long-time aqueous phase hydrogenation of crude 1,4-butanediol

作     者：Haitao Li Yin Zhang Hongxi Zhang Xiaoqin Qin Yalin Xu RuifangWu Zheng Jiang Yongxiang Zhao 

作者机构：Engineering Research Center of Ministry of Education for Fine ChemicalsShanxi UniversityTaiyuan 030006China Faculty of Engineering and the EnvironmentUniversity of SouthamptonSouthampton SO171BJUK 

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

年 卷 期：2019年第27卷第12期

页      面：2960-2967页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Supported by the National Natural Science Foundation of China(21673132) 

主　　题：1,4-Butanediol Hydrogenation Ni/SiO2–Al2O3 catalyst Deactivation Regeneration 

摘      要：The deactivation of Ni/SiO2-Al2 O3 catalyst in hydrogenation of crude 1,4-butanediol was *** the operation time of 2140 h,the catalyst showed slow activity *** results,for four spent catalysts used at different time,indicated that the main reason of the catalyst deactivation was the deposition of carbonaceous species that covered the active Ni and blocked mesopores of the *** TPO and SEM measurements revealed that the carbonaceous species included both oligomeric and polymeric species with high C/H ratio and showed *** carbonaceous species might be eliminated through either direct H2 reduction or the combined oxidation-reduction methodologies.