文献类型：期刊文献

英文题名：Pd/C embedded crosslinked polystyrene fibers as an efficient catalyst for Heck reactions

作者：Xie, Mali[1];Peng, Kexin[1];Luo, Yangyang[1];Zhang, Qi[1];Shao, Linjun[1];Zhong, Shaofeng[2];Zhou, Shujing[3];Li, Jinjing[3];Qi, Chenze[1,3]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Zhejiang, Peoples R China;[2]Zhejiang Ind Polytech Coll, Dept Text, Shaoxing 312000, Zhejiang, Peoples R China;[3]Jiamusi Univ, Sch Pharm, Jiamusi, Heilongjiang, Peoples R China

年份：0

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000880535000001)、、EI(收录号：20224613132934)、Scopus(收录号：2-s2.0-85141886815)、WOS

基金：National Natural Science Foundation of China, Grant/Award Numbers: 12075154, 11905132; Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Grant/Award Number: jxhxpctgytdjs2208

语种：英文

外文关键词：electrospinning; fiber; heck reaction; Pd; C; polystyrene

外文摘要：Pd/C embedded polystyrene fibers were successfully prepared by electrospinning. The polystyrene molecules were then cross-linked by paraformaldehyde in sulfuric acid to improve the solvent resistance of composite fibers. SEM images conformed the preparation of uniform and smooth composite fibers. FT-IR spectra demonstrated that the polystyrene molecules inside fibers have been sulphonated and crosslinked. Heck reactions were used to evaluate the catalytic performance of these novel composite fibers. The catalysis results show that this composite fiber mat catalyzed Heck reactions could be evidently promoted by using preferred reducing alcohol agent and solvent. Under the optimized reaction conditions, this composite fiber mat could effectively catalyze the Heck reactions of aromatic iodides with n-butyl acrylate to afford the products with satisfied yields. Especially, compared with the particulate Pd/C catalyst, the separation and recycling of this fibrous catalyst from the reaction mixture were significantly improved due to the larger fibrous structure. At last, this fiber catalyst was successfully reused for eight times with little loss of initial catalytic activity, which was even better than the pristine Pd/C catalyst. Hence, embedment of particulate supported metal catalysts inside the crosslinked polystyrene fibers can effectively improve their catalytic performance and handiness.