Highly reactive and reusable heterogeneous activated carbons-based palladium catalysts for Suzuki-Miyaura reaction

作     者：Yifan Jiang Bingqi Xie Jisong Zhang Yifan Jiang;Bingqi Xie;Jisong Zhang

作者机构：State Key Lab of Chemical EngineeringDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China 

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

年 卷 期：2023年第60卷第8期

页      面：165-172页

核心收录：

学科分类：081705[工学-工业催化] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the support of the National Natural Science Foundation of China (20222809, 21978146) TsinghuaFoshan Innovation Special Fund (2021THFS0214) 

主　　题：Suzuki-Miyaura reaction Heterogeneous palladium catalysts Activated carbon Thiol-and amino-functionalization Catalyst support Packed bed 

摘      要：Suzuki-Miyaura reaction of aryl halides with phenylboronic acid using a heterogeneous palladium catalyst based on activated carbons(AC) was systematically investigated in this work. Two different reaction modes(batch procedure and continuous-flow procedure) were used to study the variations of reaction processing. The heterogeneous catalysts presented excellent reactivity and recyclability for iodobenzene and bromobenzene substrates in batch mode, which can be attributed to stabilization of Pd nanoparticles by the thiol and amino groups on the AC supports. However, significant dehalogenation in the reaction mixture and Pd leaching from the heterogeneous catalysts were observed in continuous-flow *** unique phenomenon in continuous-flow mode resulted in a dramatic decline in reaction selectivity and durability of heterogeneous catalysts comparing with that of batch mode. In addition, the heterogeneous Pd catalysts with thiol-and amino-modified AC supports exhibited different reactivity and durability in batch and continuous-flow mode owing to the difference of interaction between Pd species and AC supports.