文献类型：期刊文献

英文题名：Gelatin-pyrolyzed mesoporous N-doped carbon supported Pd as high-performance catalysts for aqueous Heck reactions

作者：Yang, Shuai[1];Chen, Yuli[1];Huang, Shuaijian[1];Deng, Lu[1];Wu, Yuanyuan[1];Zheng, Xiu[1];Omonov, Shakhzodjon[1];Zeng, Minfeng[1]

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

年份：2021

卷号：35

期号：8

外文期刊名：APPLIED ORGANOMETALLIC CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000651324500001)、、EI(收录号：20212010364476)、Scopus(收录号：2-s2.0-85105813341)、WOS

基金：The authors acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 11875193), Zhejiang Provincial Fundamental Public Welfare Research Project of China (Grant No. LGG18E030004), Shaoxing Key Science and Technology Innovation Team Project, University Students' Science and Technology Innovation Activity Plan Project of Zhejiang Province (Grant No. 2020R44404).

语种：英文

外文关键词：gelatin; heterogeneous catalyst; N‐ doped carbon

外文摘要：Nitrogen-doped mesoporous carbon-supported Pd (Pd@N-C) catalysts were prepared by pyrolyzing gelatin/templates/PdCl2 hydrogels under N-2 atmosphere at 800 degrees C. Using poly (ethylene glycol) block poly (propylene glycol) block poly (ethylene glycol) (P123) as soft template and/or colloidal SiO2 as hard templates can significantly improve the Brunauer-Emmett-Teller (BET) surface area, porous structure, and pore volumes of the resultant Pd@N-C catalysts. Pd nanoparticles sized from 10-20 nm can be well immobilized on the mesoporous carbon matrix by one-pot carbonization (OC) and/or solution impregnation (SI) process. The resultant Pd@N-C catalysts with best physical properties was found in the case of Pd@N-C-SiO2-OC (1/1), exhibiting high BET surface area of 695.2 m(2)/g, large pore volume of 1.05 cm(3)/g, high mesoporous centered at 3.7 and 9.1 nm, rich N content of 7.7%, and high thermal stability with beginning decomposition temperature above 500 degrees C. It showed excellent activities for aqueous Heck coupling reactions of aromatic iodides and butyl acrylates and can be recycled for at least eight times with yield still higher than 80%. This work might facilitate a versatile platform for green and functional utilization of nature-rich biopolymer of gelatin.