Characterization of gypsum using TMDSC

被引：0
|
作者：
H. F. Dantas
R. A. S. Mendes
R. D. Pinho
L. E. B. Soledade
C. A. Paskocimas
B. B. Lira
M. O. E. Schwartz
A. G. Souza
Iêda M. G. Santos
机构：
[1] Universidade Federal da Paraíba,Laboratório de Termoquímica e Materiais, Departamento de Química, CCEN
[2] Universidade Federal de Pernambuco,Departamento de Química Fundamental/Central Analítica
[3] Universidade Federal do Rio Grande do Norte,Departamento de Engenharia Mecânica
[4] Universidade Federal da Paraíba,Laboratório de Materiais e Estruturas, Departamento de Engenharia Civil, CT
来源：
Journal of Thermal Analysis and Calorimetry | 2007年 / 87卷
关键词：
gypsum; TMDSC;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Gypsum is a dihydrated calcium sulfate, with the composition of CaSO4⋅2H2O, with large application interest in ceramic industry, odontology, sulfuric acid production, cement, paints, etc. During calcination, a phase transformation is observed associated to the loss of water, leading to the formation of gypsum or anhydrite, which may present different phases. The identification of the phases is not so easy since their infrared spectra and their X-ray diffraction patterns are quite similar. Thus, in this work, temperature modulated differential scanning calorimetry (TMDSC) was used to identify the different gypsum phases, which can be recognized by their different profiles.
引用
收藏
页码：691 / 695
页数：4
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