应用化学 ›› 1989, Vol. 0 ›› Issue (2): 11-14.

• 研究论文 • 上一篇    下一篇

杂多酸催化合成乙酸乙酯

潘海水, 周勤伟, 陈安均, 刘定江, 邓景发   

  1. 复旦大学化学系 上海
  • 收稿日期:1987-12-05 修回日期:1988-09-13 出版日期:1989-04-10 发布日期:1989-04-10

CATALYTIC SYNTHESS OF DIETHYL ETHER USNG HETEROPOLY ACID

Pan Haishui, Zhou Qingwei, Chen Anjun, Liu Dingjiang, Deng Jingfa   

  1. Department of Chemistry, Fudan University, Shanghai
  • Received:1987-12-05 Revised:1988-09-13 Published:1989-04-10 Online:1989-04-10

摘要: 回流吸附法制备的负载型12-钨磷酸(HPW/C)是合成乙酸乙酯的高效催化剂。最佳反应条件下乙醇转化率达96%,酯化选择性100%。催化剂的高活性是由于HPW在活性炭上高度分散,使活性位增多,有效酸量增大。HPW/C还具有热稳定性高和不易流失等优点。

关键词: 12-钨磷酸, 杂多酸, 多相催化, 乙酸乙酯合成

Abstract: 12-Tungstophospboric acid on active carbon (HPW/C) prepared by reflux adsorptionwas found to be highly effective for catalytic synthesis of diethyl ether. Under the optim-um conditions the conversion of ethanol and the selectivity of esterification were 96% and 100% respectively. The high activity is attributed to high dispersion of HPW on active carbonwhich results in incrcase of the number of active sites or effective acid sites. The catalystHPW/C is thermostable and HPW does not leak out of the Supports easily.

Key words: 12-Tungstophosphoric acid, Heteropoly acid, Heterogeneous catalysis, Synthesis Diethyl ether