MECHANISM OF CHLORINATION PROCESS: FROM ACETIC ACID TO MONOCHLOROACETIC ACID AND BYPRODUCTS USING ACETIC ANHYDRIDE AS CATALYST

被引：0

作者：

Liu, Jisheng ^{[1
]}

Chen, Xiaoquan ^{[1
]}

Xue, Da ^{[1
]}

Liu, Xi ^{[1
]}

Xue, Jianwei ^{[1
]}

Li, Fuxiang ^{[1
]}

Lv, Zhiping ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Coll Chem & Chem Engn, Taiyuan 030024, Shanxi, Peoples R China

来源：

REVUE ROUMAINE DE CHIMIE | 2018年 / 63卷 / 03期

关键词：

acetic anhydride; monochloroacetic acid; ionic chlorination mechanism; consecutive reaction; CHLOROSULFONIC ACID; ALPHA-CHLORINATION; ALIPHATIC-ACIDS; KINETICS;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The mechanism of chlorination process was investigated by means of experiments and theoretical calculation in this paper. Acetic acid was chlorinated to monochloroacetic acid in a laboratory scale glass tube reactor at 105 degrees C. This synthesis reaction was an autocatalytic process, acetic anhydride was the catalyst and the concentrated H2O4 or FeCl3 was used as promoter. The activation energy of monochloroacetic acid, dichloroacetic acid and trichloroacetic acid was calculated by the DFT method. The results showed that the generation of monochloroacetic acid via ionic chlorination mechanism, the generation of by products dichloroacetic acid and trichloroacetic acid mainly via ionic consecutive reaction path which belonged to ionic consecutive chlorination mechanism. Moreover, the rate controlling step of monochloroacetic acid generation was the acetyl chloride acid catalysis enolization, which formed 1-chloro, 1-ethene-1-olvia acetyl chloride.

引用

页码：235 / 244

页数：10

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