化学学报 ›› 1993, Vol. 51 ›› Issue (1): 79-84. 上一篇    下一篇

研究论文

沸石的碱性催化:乙醇双分子缩合反应

杨春;孟中岳   

  1. 南京师范大学化学系
  • 发布日期:1993-01-15

Basic catalysis of zeolites bimolecular condensation of ethanol

YANG CHUN;MENG ZHONGYUE   

  • Published:1993-01-15

本文首次发现在碱性沸石上乙醇参数发生以正丁醇为主产物的双分子缩合反应。在所研究的催化剂中, 含铷的LiX沸石表现出最高的反应选择性。研究表明, 这一碱化反应的活性与催化剂的酸碱性质密切相关。催化剂的碱性对反应起决定作用,但催化剂的碱性太强则不利于反应。

关键词: 碱性, 缩合反应, 乙醇, 沸石, 丁醇, 分子筛催化剂, 酸碱性质, 双分子反应

It was found for the first time that ethanol mainly converted into 1-butanol by a bimolecular condensation over alkali cation zeolites. the selectivity of the condensation was higher on Rb-LiX zeolite than on all other used zeolites. the experiment results showed that the activities of condensation were related to the acid-base properties of the catalysts. the basicity of the catulyst was essential to thereaction, but on the catalyst showing higher basic strength, the activity of the reaction was not higher.

Key words: ALKALINITY, CONDENSATION REACTION, ETHANOL, ZEOLITE, BUTANOL, MOLECULAR SIEVE CATALYSTS, ACID-BASE PROPERTIES, BIMOLECULAR REACTION

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