Characterisation of the chemical reactivity of a CaCO3 powder for its decomposition

被引：26

作者：

Bouineau, V ^{[1
]}

Pijolat, M ^{[1
]}

Soustelle, M ^{[1
]}

机构：

[1] Ecole Mines, Ctr SPIN CRESA, F-42023 St Etienne, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1998年 / 18卷 / 09期

关键词：

D O I：

10.1016/S0955-2219(98)00060-0

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The decomposition of calcium carbonate has been studied by isothermal and isobaric thermogravimetry at 700 degrees C, under various pressures of carbon dioxide. The kinetic curves, which have a sigmoidal shape, have been interpreted with a model involving nucleation and growth processes based on the Mampel's model. It was supposed that nucleation occurs at the surface of all the particles and that growth proceeds isotropically inward in each of them. This model allowed to characterise the chemical reactivity of several CaCO3 powders by means of the determination of both their specific nucleation frequency and their specific growth rate. (C) 1998 Elsevier Science Limited. All rights reserved.

引用

页码：1319 / 1324

页数：6

共 5 条

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[3]

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[4]

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