高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (8): 1552.

• 研究论文 • 上一篇    下一篇

Al-P-Ti-Si-O体系催化剂上乙醇和邻苯二酚的O-乙基化反应

李雪梅, 张文祥, 朱小梅, 潘春柳, 蒋大振, 吴通好, 唐敖庆   

  1. 吉林大学化学学院, 长春 130023
  • 收稿日期:2001-08-07 出版日期:2002-08-24 发布日期:2002-08-24
  • 通讯作者: atc@mail.jlu.edu.cn
  • 作者简介:张文祥(1962年出生),男,博士,教授,博士生导师,从事催化研究.E-mail:atc@mail.jlu.edu.cn
  • 基金资助:

    吉林省科学技术委员会项目(批准号:990546)资助

O-Ethylation of Catechol and Ethanol on Al-P-Ti-Si-O Catalyst

LI Xue-Mei, ZHANG Wen-Xiang, ZHU Xiao-Mei, PAN Chun-Liu, JIANG Da-Zhen, WU Tong-Hao, TANG Ao-Qing   

  1. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2001-08-07 Online:2002-08-24 Published:2002-08-24

PDF (PC)

被引次数

15

摘要： 采用常规沉淀法制备了Al-P-Ti-Si-O体系催化剂,并研究了邻苯二酚与乙醇在该催化剂上的气相O-乙基化反应,考察了催化剂组成对催化剂结构、酸性和反应性能的影响.结果表明,催化活性随表面酸量的增大而增大,选择性则随酸强度的降低而增高.对催化剂活性中心的研究表明,B酸中心是反应的可能活性中心.在适当条件下,Al1-P1.30Ti0.30-Si0.17催化剂上邻苯二酚转化率和目标产物收率分别可达到96%和90%,并在100h稳定性实验中没有活性衰减.

关键词: 邻苯二酚, 邻羟基苯乙醚, 乙醇

Abstract: The catalysts of Al-P-Ti-Si-O were prepared by common precipitation method. Vapor phase O-ethylation of catechol with ethanol over the synthesized samples was studied. The activity and selectivity of these catalysts were greatly dependent on the compositions. In addition, the compositions affect the phase structure, surface properties and acidity of the catalysts. Brnsted acid site is the possible active site. During being tested for 100 h, the conversion of catechol and the yield of guathol maintained about 94% and 84%, respectively 96% and 90% at the optimized conditions.

Key words: Catechol, Guathol, Ethanol

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