DTA and FT-IR analysis of the rehydration of basic magnesium carbonate

被引：120

作者：

Botha, A ^{[1
]}

Strydom, CA ^{[1
]}

机构：

[1] Univ Pretoria, Dept Chem, ZA-0002 Pretoria, South Africa

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2003年 / 71卷 / 03期

关键词：

basic magnesium carbonates; DTA; FT-IR; hydromagnesite; rehydration;

D O I：

10.1023/A:1023355016208

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The rehydration characteristics of a commercially produced hydromagnesite and two basic magnesium carbonates synthetically produced from Mg(OH)(2), are presented. The products were dehydrated and dehydroxylated at 325degreesC before rehydration was attempted. DTA and FT-IR were used to follow the structural changes that occurred during the rehydration processes. The results obtained for the commercially and synthetically produced hydromagnesite products indicated that the original symmetry of the groups was reclaimed during rehydration. This was not observed for the synthetically produced unidentified basic magnesium carbonate product. This investigation provides insight into the rehydration characteristics of a select group of basic magnesium carbonates.

引用

页码：987 / 995

页数：9

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