Kinetics of the decomposition of crocidolite asbestos: A preliminary real-time X-ray powder diffraction study

被引：17

作者：

Gualtieri, AF ^{[1
]}

Levy, D

Belluso, E

Dapiaggi, M

机构：

[1] Univ Modena, Dipartimento Sci Terra, IT-41000 Modena, Italy

[2] Univ Turin, Dipartimento Sci Mineral & Petr, Turin, Italy

[3] Univ Milan, Dipartimento Sci Terra, IT-20133 Milan, Italy

来源：

EUROPEAN POWDER DIFFRACTION EPDIC 8 | 2004年 / 443-4卷

关键词：

amphibole asbestos; in situ; reaction kinetics; real time powder diffraction;

D O I：

10.4028/www.scientific.net/MSF.443-444.291

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

This work is a preliminary kinetic study of the crocidolite decomposition followed in situ at high temperature using real time conventional powder diffraction and DTA in the temperature range 720-795 degreesC. The data analysis using the Avrami models indicates that the rate limiting step of the reaction is monodimensional ion diffusion (n=0.5) with an activation energy of 129 (10) kcal/mole.

引用

页码：291 / 294

页数：4

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[4]

HAWTHORNE FC, 1985, AMPHIBOLES OTHER HYD, V9, P1

[5] THERMAL-DECOMPOSITION OF AMOSITE, CROCIDOLITE, AND BIOTITE [J].

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