文献类型：期刊文献

英文题名：Sulfonic groups functionalized preoxidated polyacrylonitrile nanofibers and its catalytic applications

作者：Shao, Linjun[1];Xing, Guiying[1];He, Luyao[1];Chen, Ji[1];Xie, Hangqing[1];Liang, Xuezheng[1];Qi, Chenze[1]

机构：[1]Shaoxing Univ, Inst Appl Chem, Shaoxing 312000, Zhejiang, Peoples R China

年份：2012

卷号：443

起止页码：133

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：SCI-EXPANDED(收录号：WOS:000309644400016)、、EI(收录号：20123815447448)、Scopus(收录号：2-s2.0-84866058728)、WOS、CCR-EXPANDED(收录号：WOS:000309644400016)

基金：The authors acknowledge the financial support from the Zhejiang Science and Technology Innovation Team of Zhejiang Province Science and Technology Hall (2012R10014-16) and Key Discipline Foundation of Shaoxing University (10LG1006).

语种：英文

外文关键词：Solid acid; Preoxidation; Electrospun; Nanofiber

外文摘要：A SO3H-bearing nanofiber mat was synthesized and investigated as a novel heterogeneous acid catalyst. Preoxidated polyacrylonitrile nanofiber mat was prepared via electrospinning and heat treatment, and then reacted with chlorosulfuric acid to introduce the sulfonic groups. The nanofiber mat owned high acidity of 2.99 mmol/g. The preoxidation and sulfonation were examined by FT-IR spectroscopy. elemental analysis and X-ray diffraction spectroscopy (XRD). The fiber morphologies were characterized by scanning electron microscopy (SEM). The catalytic activities and reuse of the prepared nanofiber mat solid acid catalyst have been evaluated for the acetalization and esterification. The regular fiber mat structure could significantly facilitate the recovery and reuse of the catalyst. The excellent catalytic performance and easy recycling made the novel fiber mat solid acid hold great potential for the green chemical processes. (C) 2012 Elsevier B.V. All rights reserved.