Thermal and kinetic analyses on Michael addition reaction of acrylic acid

被引：23

作者：

Fujita, Michiya ^{[1
]}

Iizuka, Yoshiaki ^{[2
]}

Miyake, Atsumi ^{[1
,3
]}

机构：

[1] Yokohama Natl Univ, Grad Sch Environm & Informat Sci, Hodogaya Ku, 79-7 Tokiwadai, Yokohama, Kanagawa 2408501, Japan

[2] PHA Consulting Co Ltd, 3462-1 Nakatsu, Aikawa, Kanagawa 2400303, Japan

[3] Yokohama Natl Univ, Inst Adv Sci, Hodogaya Ku, 79-7 Tokiwadai, Yokohama, Kanagawa 2408501, Japan

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2017年 / 128卷 / 02期

关键词：

Acrylic acid; Michael addition reaction (MAR); Kinetic analysis; Runaway polymerization; RUNAWAY;

D O I：

10.1007/s10973-016-5985-6

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The purpose of this study is to obtain a better understanding of Michael addition reaction (MAR) which may induce runaway polymerization of acrylic acid. The heat of MAR was measured using a C80 Calvet-type heat flux calorimeter, and products of MAR were revealed by gel permeation chromatography. The reaction rate constant of MAR was obtained from kinetic analysis. In high-sensitivity calorimetry, a low rate of heat release due to MAR was detected. The heat of MAR was 109 J g(-1) and conversion of acrylic acid to Michael adducts was 82 mass%. The products of MAR were acrylic acid dimers, trimers and tetramers. The reaction order was 2.5th, and the overall reaction rate constant was k = 3.52 x 10(3) x exp (-1.18 x 10(5)/T [K]) L-1.5 mol(-1.5) s(-1). The activation energy of MAR was 98.0 kJ mol(-1), which was similar in value to that of dimerization in previous studies. This indicated that dimer formation is the dominant reaction in MAR.

引用

页码：1227 / 1233

页数：7

共 21 条

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