催化学报

催化学报 ›› 2012, Vol. 33 ›› Issue (7): 1224-1228.DOI: 10.3724/SP.J.1088.2012.20305

• 研究论文 • 上一篇    下一篇

酸性聚乙烯基吡咯烷酮-杂多酸杂化催化剂的合成及其催化酯化反应性能

冷炎1,*, 仇学谦1, 蒋平平1, 王军2   

  1. 1江南大学化学与材料工程学院, 食品胶体与生物技术教育部重点实验室, 江苏无锡 214122; 2南京工业大学化学化工学院, 材料化学工程国家重点实验室, 江苏南京 210009
  • 收稿日期:2012-03-06 修回日期:2012-04-12 出版日期:2012-06-21 发布日期:2012-06-21

Synthesis of Polyvinyl Pyrrolidone-Heteropolyacid Acidic Hybrid Catalyst and Its Catalytic Activity for Esterification Reactions

LENG Yan1,*, QIU Xueqian1, JIANG Pingping1, WANG Jun2   

  1. 1The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China; 2State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China
  • Received:2012-03-06 Revised:2012-04-12 Online:2012-06-21 Published:2012-06-21

PDF

1099

被引次数

11

摘要： 合成并表征了聚乙烯基吡咯烷酮修饰的杂多酸杂化催化剂 PVP-PW, 比较了它与其它催化剂上乙酸和正丁醇的酯化反应性能. 结果表明, PVP-PW 是催化酯化反应的高效多相催化剂, 所得酯收率和选择性分别高达 98.4% 和 100%; 反应结束后, 催化剂通过简单过滤即可分离回收, 重复使用 6 次后, 其催化活性没有明显下降. 通过改变反应底物羧酸和醇, 发现催化剂 PVP-PW 在众多酯化反应中均具有较高的催化活性.

关键词: 杂多酸, 吡咯烷酮, Brönsted 酸催化剂, 酯化反应, 非均相催化

Abstract: A novel acidic polyvinyl pyrrolidone-heteropolyacid hybrid catalyst PVP-PW was synthesized and characterized. The catalytic activity of the catalyst was measured in the esterification of acetic acid with n-butanol. The hybrid PVP-PW was demonstrated to be a highly efficient solid-liquid heterogeneous catalyst and exhibited high ester yield of 98.4% with perfect selectivity of 100%. After the reaction, the catalyst could be recovered simply by filtration and reused at least six times without a significant loss in the catalytic activity. In addition, this catalyst can be well applied to versatile carboxylic acids or alcohols for esterification.

Key words: heteropolyacid, pyrrolidone, Brönsted acidic catalyst, esterification, heterogeneous catalysis