文献类型：期刊文献

英文题名：Porous carbon supported Pd catalysts derived from gelatin-based/chitosan or polyvinyl pyrrolidone/PdCl2 blends

作者：Huang, Shuaijian[1];Yang, Shuai[1];Chen, Yuli[1];Yang, Zhen[1];Deng, Lu[1];Wu, Yuanyuan[1];Zhang, Taojun[1];Feng, Ruokun[1];Zeng, Minfeng[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China

年份：2022

卷号：139

期号：20

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000748274600001)、、WOS

基金：National Natural Science Foundation of China, Grant/Award Numbers: 11875193, 12175149, 11475114; Zhejiang Provincial Fundamental Public Welfare Research Project of China, Grant/Award Number: LGG18E030004; Shaoxing Key Science and Technology Innovation Team Project; University Students' Science and Technology Innovation Activity Plan Project of Zhejiang Province, Grant/Award Number: 2020R44404

语种：英文

外文关键词：catalysts; porous materials; structure-property relationships

外文摘要：Novel N-containing porous carbon supported Pd heterogeneous catalysts have been derived by carbonization of gelatin (GEL)/chitosan/PdCl2 (GEL/CS/PdCl2) and GEL/polyvinyl pyrrolidone/PdCl2 (GEL/PVP/PdCl2) blends under N-2 atmosphere at 800 degrees C. The microstructure of the resultant N-containing carbon supported Pd heterogeneous catalysts can be tailored by the nature of the blended polymers. Much larger specific surface area, better dispersion of Pd-0/PdO nanoparticles, higher Pd and N contents are found in the case of N-containing porous carbon supported Pd heterogeneous catalysts derived from GEL/CS/PdCl2 blend system. When the mass ratio of GEL to CS is kept at 1/1, the surface area of 644.8 m(2)/g, rich porous structure, N % of 7.2%, and Pd-0/PdO nanoparticles sized below 3 nm are obtained in the derived Pd@N-C-GEL/CS(1/1) catalyst. It shows excellent catalytic efficiency (higher than 90%) in Heck coupling reaction of aromatic halides and alkenes, and high recycling stabilities both in aqueous (9 runs) and organic (15 runs) phase. The high activity and stability of the novel Pd@N-C-GEL/CS(1/1) catalyst have been attributed to a combination of high porous structure, strong chelation of Pd species, high thermal stability, and good solvent-resistant performances.