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日用化学工业 ›› 2018, Vol. 48 ›› Issue (12): 702-705.doi: 10.13218/j.cnki.csdc.2018.12.007

• 开发与应用 • 上一篇    下一篇

聚苯胺负载对甲苯磺酸催化合成肉桂酸丙酯的工艺研究

丁邦东, 杨瑞洪, 杜彬, 罗志臣, 刘伟   

  1. 扬州工业职业技术学院 化学工程学院,江苏 扬州 225127
  • 收稿日期:2018-06-05 出版日期:2018-12-22 发布日期:2019-03-18
  • 通讯作者: 罗志臣,教授,电话:15189870530,E-mail:lzc1990@sina.com。
  • 作者简介:丁邦东(1968-),江苏泰州人,硕士,高级实验师,E-mail:dingbd@ypi.edu.cn。
  • 基金资助:
    江苏省高等学校自然科学研究面上项目(17KJB150046); 江苏省高等学校优秀科技创新团队(苏教科(2017)6号); 江苏省“青蓝工程”优秀青年骨干教师资助项目(苏教办师[2017]-5); 扬州工业职业技术学院专业导师工作室(2016-01)、科研创新团队(2016-001)资助课题

Study on catalytic synthesis of propyl cinnamate with p-toluenesulphonic acid supported onpolyaniline

DING Bang-dong, YANG Rui-hong, DU Bin, LUO Zhi-chen, LIU Wei   

  1. Department of Chemical Engineering,Yangzhou Polytechnic Institute,Yangzhou,Jiangsu 225127,China
  • Received:2018-06-05 Online:2018-12-22 Published:2019-03-18

摘要: 以聚苯胺负载对甲基苯磺酸(PTSA/PANI)为催化剂,肉桂酸和正丙醇为原料制备肉桂酸丙酯,考察了酸醇摩尔比、反应时间、催化剂用量和使用次数等因素对肉桂酸丙酯收率的影响,产品采用IR和1H NMR进行结构表征。结果表明,PTSA/PANI具有较好的稳定性和催化活性。产品较佳合成工艺条件为:肉桂酸0.15 mol(约22.2 g),n(肉桂酸)∶n(正丙醇)=1∶4.0,m(PTSA/PANI)/m(肉桂酸)=6%,带水剂环己烷用量15 mL,反应时间3.5 h。在此条件下肉桂酸丙酯收率超过90.0%。催化剂连续使用6次后,产品收率仍可达到85.0%以上。

关键词: 肉桂酸丙酯, 对甲苯磺酸, 聚苯胺, 合成

Abstract: Propyl cinnamate was prepared using cinnamic acid and propanol as raw materials andp-toluenesulphonic acid supported on polyaniline (PTSA/PANI) as catalyst.The effects of molar ratio of acid/alcohol,reaction time,and the number of times used and the dosage of catalyst on the yield of propyl cinnamate were investigated.The product was characterized by IR and1H NMR.The results show that PTSA/PANI has good catalytic activity and stability.The optimized conditions are as follows:0.15 mol (approximately 22.2 g) cinnamic acid;n(cinnamic acid)∶n(propanol)=1∶4.0;the catalyst used is in an amount corresponding to 6% of the mass of cinnamic acid;the amount of cyclohexane (water entrainer) is 15 mL;the reaction time is 3.5 h.The yield of propyl cinnamate thus obtained exceeds 90.0%.The catalyst is able to be reused 6 times and the yield is still above 85.0%.

Key words: propyl cinnamate, p-toluenesulfonic acid, polyaniline, synthesis

中图分类号: 

  • TQ655