煤镜质组热解的电子顺磁共振研究

波谱学杂志 ›› 2011, Vol. 28 ›› Issue (4): 464-470.

煤镜质组热解的电子顺磁共振研究

殷春浩^1*，赵强¹，滕道祥²，李富强¹，神干¹，朱姗姗¹

1. 中国矿业大学理学院, 江苏徐州 221116； 2. 徐州工程学院数理学院，江苏徐州 221000

收稿日期:2011-09-29 出版日期:2011-12-05 发布日期:2011-12-05
基金资助:
江苏省高校自然科学研究计划资助项目（08KJD140004）.

Coal Vitrinite Pyrolysis Studied by EPR

Yin Chun-Hao^1*, ZHAO Qiang¹, TENG Dao-Xiang², LI Fu-Qiang¹, SHEN Gan¹, ZHU Shan-Shan¹

1. College of Science, China University of Mining and Technology, Xuzhou 221116, China;
2. Mathematics & Physical Science School, Xuzhou Institute of Technology, Xuzhou 221000, China

Received:2011-09-29 Online:2011-12-05 Published:2011-12-05
Supported by:
江苏省高校自然科学研究计划资助项目（08KJD140004）.

摘要/Abstract

摘要：

基于煤燃烧和自燃研究在煤矿生产安全以及煤炭资源的高效利用等实际生产和生活中的重要性，探讨了煤岩显微组分镜质组在有氧条件下热解的自由基反应. 采用电子顺磁共振技术对煤镜质组在有氧条件下300 ℃~450 ℃的加热分解产物及未加热处理常温下的镜质组样品做电子顺磁共振研究，得到300 ℃、350 ℃、400 ℃、450 ℃时其产物在常温下（25 ℃）时的电子顺磁共振信号，并对随加热温度不同，信号的产生和变化原因做了分析，研究结果表明煤镜质组在加热过程中有顺磁中心的浓度和顺磁中心成分的改变，该文中把它归因于镜质组的不同有机成分在不同温度下分解产生的自由基.

关键词: 电子顺磁共振(EPR), 煤, 镜质组, 显微组分, 自由基

Abstract:

Understanding coal combustion and spontaneous combustion are important for coal mine safety and high efficient utilization of coal resources. In this work, the free radical reactions of pyrolysed vitrinite under aerobic conditions were investigated. Vitrinite sample at normal temperature and heatdecomposition products of vitrinite between 300 ℃ to 450 ℃ under aerobic condition were investigated by electron paramagnetic resonance (EPR). The EPR′s signals of the heat-decomposition products produced at 300 ℃, 350 ℃, 400 ℃ and 450 ℃ were collected at 25 ℃. Heating temperature-related changes in EPR signals were analyzed. It was found that the composition and concentration of paramagnetic centers changed with heating temperature, probably originated from that fact that different free radicals were produced from different organic components at different heating temperatures.

Key words: electron paramagnetic resonance, coal, vitrinite, maceral, free radical

中图分类号:

O482.53

殷春浩, 赵强, 滕道祥, 李富强, 神干, 朱姗姗. 煤镜质组热解的电子顺磁共振研究[J]. 波谱学杂志, 2011, 28(4): 464-470.

Yin Chun-Hao, ZHAO Qiang, TENG Dao-Xiang, LI Fu-Qiang, SHEN Gan, ZHU Shan-Shan. Coal Vitrinite Pyrolysis Studied by EPR[J]. Chinese Journal of Magnetic Resonance, 2011, 28(4): 464-470.

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