Highly efficient and recyclable amorphous Pd(II)/crystal Pd(0)catalyst for boosting Suzuki reaction in aqueous solution  

作　　者：Yong Zhao Zhongning Huang Lianmeng Wang Xiangyu Chen Yan Zhang Xiuqin Yang Dawei Pang Jianxin Kang Lin Guo 

机构地区：[1]School of Chemistry,Beijing Advanced Innovation Center for Biomedical Engineering,Key Laboratory of Bio-Inspired Smart interfacial Science and Technology,Beihang University,Beijing 100191,China [2]Institute of Microstructure and Property of Advanced Materials,Beijing University of Technology,Beijing 100124,China

出　　处：《Nano Research》2022年第2期1193-1198,共6页纳米研究（英文版）

基　　金：support from Beijing Natural Science Foundation(No.2194077);the National Natural Science Foundation of China(Nos.51532001 and 52002010);the National Postdoctoral Program for Innovative Talents(No.BX20180020);the China Postdoctoral Science Foundation Funded Project(No.2018M640041).

摘　　要：Ultrafine and highly dispersed Pd nanoparticles have drawn considerable attention with high activity,selectivity and atomic efficiency.In this paper,amorphous Pd(II)-complex solid spheres with-5 nm Pd nanoparticles loaded on were successfully achieved through a simple and gentle one-pot solution method with vitamin B1 simultaneously as complexing agent and reducing agent.An ultrathin mesoporous SiO_(2) shell was then coated at the surface of Pd(II-O)spheres as the armor which could prevent the dissolution of Pd(II)during the catalytic process.The combination of Pd(II)and Pd(0)endowed Pd(II-0)@m-SiO_(2) catalyst an excellent performance in eco-friendly aqueous media Suzuki reactions.The high activity,productivity and recyclability were all comparable with the best Pd catalysts ever reported.The ingenious formation of amorphous Pd(II)/crystal Pd(0)with enhanced catalytic performances provides a new,scalable strategy to practical promotion of Suzuki cross-coupling reactions.

关 键 词：PALLADIUM amorphous structure supported catalyst mesoporous SiO_(2)shell Suzuki reaction 

分 类 号：O64[理学—物理化学]