The critical role of Zr in controlling the activity of Pd/Beta on the hydrogenation of phenol to cyclohexanone

作     者：Bin Gao Junwen Chen Qi Zuo Hongyan Wang Wenlin Li Bin Gao;Junwen Chen;Qi Zuo;Hongyan Wang;Wenlin Li

作者机构：College of Chemical Engineering and TechnologyTaiyuan University of TechnologyTaiyuan 030024China State Key Laboratory of Catalytic Material and Reaction EngineeringResearch Institute of Petroleum ProcessingSinopecBeijing 100083China 

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

年 卷 期：2023年第57卷第5期

页      面：79-87页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0703[理学-化学] 

基　　金：Financial supports from the State Key Laboratory of Catalytic Materials and Reaction Engineering (RIPP  SINOPEC)。 

主　　题：Palladium Phenol hydrogenation Cyclohexanone Zirconium Zeolite 

摘      要：The promoting effect of zirconium addition on Pd/Beta catalysts has been investigated in the selective hydrogenation of phenol to cyclohexanone in the aqueous phase. The activity of the catalyst in the reaction was greatly improved by introducing Zr atoms into the framework of H-Beta zeolite. An important synergy between the Zr species and Pd, affecting the Pd dispersion state on the support, has been observed. The modification of the support with Zr^(4+) improves the Lewis/Brφnsted acid ratio of the catalyst, suppressing the further transformation of cyclohexanone. The kinetics of Pd/Zr-Beta catalyst showed high selectivity to cyclohexanone. The catalytic results showed that the Pd/Zr-Beta had the best catalytic performance at the desired temperature of 80℃ for 5 h.