煤镜质组热解的电子顺磁共振研究
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....
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| Published in: | 波谱学杂志 Vol. 28; no. 4; pp. 464 - 470 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | Chinese |
| Published: |
中国矿业大学理学院,江苏徐州,221116%徐州工程学院数理学院,江苏徐州,221000
2011
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | 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. |
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| Bibliography: | YIN Chun-hao,ZHAO Qiang,TENG Dao-xiang,LI Fu-qiang, SHEN Gan,ZHU Shan-shan（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） 42-1180/04 electron paramagnetic resonance; coal; vitrinite; maceral; free radical 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 |
| ISSN: | 1000-4556 |
| DOI: | 10.3969/j.issn.1000-4556.2011.04.004 |