应用化学 ›› 1997, Vol. 0 ›› Issue (6): 87-89.

• 研究论文 • 上一篇    下一篇

异丁酸的合成

赵崇涛, 朱则善   

  1. 福建师范大学化学系, 福州 350007
  • 收稿日期:1997-02-18 修回日期:1997-06-03 出版日期:1997-12-10 发布日期:1997-12-10

Synthesis of Isobutyric Acid

Zhao Chongtao, Zhu Zeshan   

  1. Department of Chemistry, Fujian Normal University, Fuzhou 350007
  • Received:1997-02-18 Revised:1997-06-03 Published:1997-12-10 Online:1997-12-10

摘要: 异丁酸作为食用香料, 已被 FEMA(食用香料制造者协会)确认为 GRAS(一般公认为安全)一类的化学用品[1]. 工业上异丁酸由异丁醇在碱性介质中以KMnO4为氧化剂氧化后经精馏而成, 产率仅为 73%~76%[2], 且生产一吨异丁酸除主原料异丁醇外, 尚需耗约 3.2 吨KMnO4, 1.6 吨 H2SO4, 0.3 吨 Na2CO3 等辅助材料, 成本高且产生近 2 吨 MnO2废渣, 污染了环境. 更优越的异丁酸制备方法尚未见报道。

关键词: 异丁醇, 异丁酸, 间接电合成, 相转移催化剂

Abstract: Isobutyric acid has been synthesized by oxidation of isobutyl alcohol using tetrabutylammonium hydrosulfate as phase transfer catalyst in sulfuric acid. The oxidant Cr(Ⅵ)was obtained electrolytically from Cr(Ⅲ)salt solution resulted from above oxidation reaction.

Key words: isobutyl alcohol, isobutyric acid, synthesis, phase transfer catalysis