应用化学 ›› 1988, Vol. 0 ›› Issue (4): 81-83.

• 研究简报 • 上一篇    下一篇

杂多酸催化作用下氢醌与甲醇生成氢醌单甲醚反应机理的探讨

翕善菁, 张有家, 李在能, 蔡天锡   

  1. 大连理工大学化学系
  • 收稿日期:1987-10-04 修回日期:1988-01-05 出版日期:1988-08-10 发布日期:1988-08-10

ON THE MONOETHERIFICATION OF HYDROQUINONE WITH METHANOL OVER HETEROPOLYACID

Weng Shanqing, Zhang Youjia, Li Zhaineng, Cai Tianxi   

  1. Department of Chemistry, Dalian University of Technology
  • Received:1987-10-04 Revised:1988-01-05 Published:1988-08-10 Online:1988-08-10

摘要: 氢醌单甲醚(HQMME)是单体聚合的高效阻聚剂,又是重要化工原料.以氢醌(HQ)和硫酸二甲酯为原料的经典合成法,由于硫酸二甲酯的剧毒和价格昂贵,正在被HQ和甲醇的催化合成法所代替.有报道[1],杂多酸(HPA)对该反应有优良催化性能.本文考察了四种HPA对HQ和MeOH生成HQMME的催化性能及其影响因素,并探讨了反应机理.

关键词: 氢醌单甲醚, 杂多酸, 自动催化反应, 机理

Abstract: Hydroquinone monomethyl ether was synthesized from hydroquinone and methanol using heteropolyacid as catalyst and an autocatalysis mechanism was proposed by which quinonc is considered to be a promotor during the reaction.It is suggested that the high activity and selectivity of the heteropolyacid are due to the strong acidity and redox property of the acid.

Key words: Hydroquinone monomethyl ether, Heteropolyacid, Autocatalysis, Mechanism