文献类型：期刊文献

英文题名：N-doped mesoporous carbons supported palladium catalysts prepared from chitosan/silica/palladium gel beads

作者：Zeng, Minfeng[1];Wang, Yudong[1];Liu, Qi[1];Yuan, Xia[1];Feng, Ruokun[1];Yang, Zhen[1];Qi, Chenze[1]

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

年份：2016

卷号：89

起止页码：449

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：SCI-EXPANDED(收录号：WOS:000378951400052)、、EI(收录号：20235015205641)、Scopus(收录号：2-s2.0-84968624531)、WOS

基金：The authors acknowledge the financial support from the National Natural Science Foundation of China (grant number: 11475114 and 21203123), Academic Climbing Project for the youth academic leaders of Zhejiang Province, China (grant number: pd2013391), High-level talents further study abroad support plan of Shaoxing City.

语种：英文

外文关键词：Chitosan; N doped carbon materials; Palladium

外文摘要：In this study, a heterogeneous catalyst including palladium nanoparticles supported on nitrogen-doped mesoporous carbon (Pd@N-C) is synthesized from palladium salts as palladium precursor, colloidal silica as template, and chitosan as carbon source. N-2 sorption isotherm results show that the prepared Pd@N-C had a high BET surface area (640 m(2) g(-1)) with large porosity. The prepared Pd@N-C is high nitrogen rich as characterized with element analysis. X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM), and Raman spectroscopy characterization of the catalyst shows that the palladium species with different chemical states are well dispersed on the nitrogen containing mesoporous carbon. The Pd@N-C is high active and shows excellent stability as applied in Heck coupling reactions. This work supplies a successful method to prepare Pd heterogeneous catalysts with high performance from bulk biopolymer/Pd to high porous nitrogen-doped carbon supported palladium catalytic materials. (C) 2016 Elsevier B.V. All rights reserved.