文献类型：期刊文献

英文题名：Polymer-Supported Pd Nanoparticles for Solvent-Free Hydrogenation

作者：Luo, Qingsong[1,2];Wang, Hai[1,2];Xiang, Qian[3];Lv, Yating[1,2];Yang, Jiabao[4];Song, Lijuan[4];Cao, Xiaoming[3,5];Wang, Liang[1,2];Xiao, Feng-Shou[1,2]

机构：[1]Zhejiang Univ, Key Lab Biomass Chem Engn, Minist Educ, Hangzhou 310058, Peoples R China;[2]Zhejiang Univ, Coll Chem & Biol Engn, Hangzhou 310058, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, State Key Lab Green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China;[4]Liaoning Petrochem Univ, Key Lab Petrochem Catalyt Sci & Technol, Fushun 113001, Peoples R China;[5]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China

年份：2024

卷号：146

期号：38

起止页码：26379

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20243817064246);WOS:【SCI-EXPANDED(收录号:WOS:001313082000001)】；

基金：This work is supported by the National Key Research and Development Program of China (2022YFA1503502), the National Natural Science Foundation of China (22202175 and 22241801), the Zhejiang Provincial Basic Public Welfare Project (LD24E030003), and Qizhen Funding of Zhejiang University.

语种：英文

外文关键词：Aniline - Hydrogenation - Nanocatalysts - Nanoclay

摘要：Breaking the trade-off between activity and stability of supported metal catalysts has been a long-standing challenge in catalysis, especially for metal nanoparticles (NPs) with high hydrogenation activity but poor stability. Herein, we report a porous poly(divinylbenzene) polymer-supported Pd NP catalyst (Pd/PDVB) with both high activity and excellent stability for the solvent-free hydrogenation of nitrobenzene, even at ambient temperature (25 degrees C) and H-2 pressure (0.1 MPa). Pd/PDVB gave a turnover frequency as high as 22,632 h(-1) at 70 degrees C and 0.4 MPa, exceeding 5556 h(-1) of the classical Pd/C catalyst under equivalent conditions. Mechanistic studies reveal that the polymer support benefits the desorption of the aniline product from the Pd surface, which is crucial for rapid hydrogenation under solvent-free conditions. In addition, the polymer support in Pd/PDVB efficiently hindered Pd leaching, resulting in good stability.