KINETIC-STUDIES ON THE THERMAL-DISSOCIATION OF BETA-CYCLODEXTRIN-ANISALDEHYDE INCLUSION COMPLEX

被引：9

作者：

LI, XT ^{[1
]}

LI, JH ^{[1
]}

ZHANG, GE ^{[1
]}

XI, GX ^{[1
]}

LOU, XD ^{[1
]}

机构：

[1] HENAN NORMAL UNIV,DEPT CHEM,XINXIANG 453002,PEOPLES R CHINA

来源：

THERMOCHIMICA ACTA | 1995年 / 262卷

关键词：

ANISALDEHYDE; BETA-CYCLODEXTRIN; INCLUSION COMPLEX; KINETICS;

D O I：

10.1016/0040-6031(95)02304-K

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The stability of beta-cyclodextrin-anisaldehyde (beta-CDA) inclusion complex was investigated by TG and DSC. The weight loss of beta-CDA . 9H(2)O takes place in three stages: the dehydration occurs at 50-120 degrees C; the dissociation of beta-CDA occurs at 210-260 degrees C; and the decomposition of beta-CD begins at 280 degrees C. The kinetics of the dissociation of beta-CDA in flowing dry nitrogen was studied by means of thermogravimetry both at constant temperature and with linearly increasing temperature. The results show that the dissociation of beta-CDA is dominated by a two-dimensional diffusion process (D-2). The activation energy E is 139.23 kJ mol(-1), the pre-exponential factor A is 1.0394 x 10(12) min(-1).

引用

页码：165 / 173

页数：9

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