摘要
煤的电子顺磁共振(ESR)是一项新发展的煤岩测试方法,不仅用于煤岩研究,而且也用于油气源岩的研究,它可获得一些有用的参数,并具有样品用量少、不破坏原样、样品不需作化学处理,因此免受化学变化影响以及固体、液体均能测试等优点。在煤岩学研究中,该方法主要用于度量煤中自由基浓度。研究表明,随着煤的变质程度的增加,煤中自由基浓度和电子顺磁共振讯号参数都有规律地变化。本文主要讨论了顺磁共振的原理、方法及测试结果。
ESR ( Electronic Spin Resonance ) has been mainly used to measure the concentration of free radical in coal. The studies suggest that: 1. The concentrations of free radical in coal and asphaltenes show the regular change with increased coal rank, and the evolution degree may be determined for that. 2. There occurs the free radical in soluble and insoluble organic matter from coal, in which there is the free radical in asphaltenes and resins and not the free radical in saturated hydrocarbons and aromatic hydrocarbons. In addition, the paper briefly describes the principle and method of ESR and discusses the variable ties of free radical concentration in different ranks of coal.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1991年第2期213-218,共6页
Earth Science-Journal of China University of Geosciences
关键词
煤
演化
煤岩学
电子顺磁共振
electronic spin resonance, coal petrography, concentration of free radical, evolution degrees of coal.
