Nb_(2)O_(5)promoted Pd/AC catalyst for selective phenol hydrogenation to cyclohexanone  

作　　者：Chunhua Zhang Zhengyan Qu Hong Jiang Rizhi Chen Weihong Xing 

机构地区：[1]State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 210009,China [2]Changzhou Key Laboratory of Eco-Textile Technology,Changzhou Vocational Institute of Textile and Garment,Changzhou 213164,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第4期87-93,共7页中国化学工程学报（英文版）

基　　金：The financial supports from the National Natural Science Foundation(21776127,21921006);the Jiangsu Province Key R&D Program(BE2018009-2);the Jiangsu Province natural science research of College and university general project(20KJB540003);a project funded by the priority academic program development of Jiangsu higher education institutions(PAPD);the State Key Laboratory of Materials-Oriented Chemical Engineering(ZK201902);the outstanding young teacher’s project of Changzhou Vocational Institute of Textile and Garment of China。

摘　　要：Phenol hydrogenation is a green route to prepare cyclohexanone,an intermediate for the production of nylon 66 and nylon 6.The development of high-performance catalysts still keeps a great challenge.Herein,the activated carbon(AC)was modified with an acidic material Nb_(2)O_(5)to adjust the microstructure and surface properties of AC,and the influences of the calcination temperature and Nb_(2)O_(5)content on the catalytic performance of the Pd/AC-Nb_(2)O_(5)catalysts for the phenol hydrogenation to cyclohexanone were investigated.The Nb_(2)O_(5)with proper content can be highly uniformly distributed on the AC surface,enhancing the acidity of the Pd/AC-Nb_(2)O_(5)catalysts with comparable specific surface area and Pd dispersion,thereby improving the catalytic activity.The hybrid Pd/AC-10 Nb_(2)O_(5)-500 catalyst exhibits the synergistic effect between the Pd nanoparticles and AC-10 Nb_(2)O_(5),which enhances the catalytic activity for the hydrogenation of phenol.Furthermore,the as-prepared Pd/AC-10 Nb_(2)O_(5)-500 catalyst shows good reusability during 7 reaction cycles.

关 键 词：Phenol hydrogenation CYCLOHEXANONE Nb_(2)O_(5) PD/AC ACIDITY 

分 类 号：TQ234.21[化学工程—有机化工] TQ426