矿物热分解动力学的研究方法探讨  

Methods for Determining Thermal Decomposition Kinetics of Minerals: An Introduction

作　　者：李士平[1] 周文戈[2] 谢鸿森[2] 赵志丹[3] 刘永刚[2] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院地质实验室,黑龙江大庆163712 [2]中国科学院地球化学研究所高温高压地球动力学开放研究实验室,贵州贵阳550002 [3]中国地质大学岩石教研室,北京100083

出　　处：《矿物岩石地球化学通报》2001年第3期194-197,共4页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金项目 ( 10 0 32 0 40和 4990 40 0 5 )

摘　　要：:矿物分解动力学的研究可以大大提高我们对地质作用过程中矿物生长、元素和流体迁移等过程的了解。本文在介绍固相反应动力学原理的基础上 ,讨论了常压下研究矿物分解动力学的热重分析法和电导率法 ,指出精确确定高压下的反应分数 ,是研究高压下矿物热分解动力学的关键。提出了高压下确定反应分数的方法。The thermal decomposition kinetics of minerals is a fundamental but poorly understood geological process. Knowledge about thermal decomposition kinetics of minerals will improve our understanding the processes of crystal growth, element immigration and fluid flow in geological condition. The principle of reaction kinetics of solid is introduced in this paper at first, and then two methods, thermogravimetry and conductivity method, usually used in researching the decomposition kinetics at atmosphere pressure are discussed. At high pressure, the key for determining the mineral decomposition kinetics is the measurement of the reaction fraction and two methods are recommended. One is statistic method, which measures the volume of new formed mineral optically. The other is electrical conductivity method, which measures the electrical conductivity during mineral decomposition.

关 键 词：反应动力学 热重分析法 电导率法 高压 

分 类 号：P574[天文地球—矿物学]