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煤的ESR波谱研究
引用本文:刘国根,邱冠周.煤的ESR波谱研究[J].波谱学杂志,1999,16(2):171-174.
作者姓名:刘国根  邱冠周
作者单位:中南工业大学测试分析中心, 长沙 410083
基金项目:国家教育部跨世纪人才基金
摘    要:利用JES-FE1XG型电子自旋共振波谱仪,系统地研究了褐煤与风化烟煤的ESR波谱,褐煤与风化烟煤中存在大量稳定的自由基,从褐煤到烟煤,随着煤化作用的加强,ESR波谱的吸收峰变窄,风化使烟煤的自旋浓度明显下降,这将为判断煤是否风化提出又一定量判据,其原因可能是由于风化使煤的局部大分子遭到破坏,从而影响π电子自由基的稳定性.

关 键 词:  电子自旋共振波谱  自由基  
收稿时间:1998-11-22

A STUDY ON ESR SPECTRUM OF COAL
Liu Guogen,Qiu Guanzhou.A STUDY ON ESR SPECTRUM OF COAL[J].Chinese Journal of Magnetic Resonance,1999,16(2):171-174.
Authors:Liu Guogen  Qiu Guanzhou
Institution:Testing and Analysis Centre, Central South University of Technology, Changsha, 410083
Abstract:In this paper, the ESR (electron spin resonance)spectra of brown and bituminous coal have been systematically studied by means of JES-FE1XG model ESR spectrometer.The brown and bituminous coals contain a large amount of stable free radicals. Due to strengthening of coalification, the peak width of bituminous coal is mo re narrow than that of brown coal. The efflorescence reaction results in obvious decrease of spin concentration, which will offer a quantitive standard for judging whether the coal was efflorescend. The reason may be that the structure of large molecule of coal is damaged by efflorescence reaction, resulting in the decrease of stability of π electron radicals.
Keywords:Coal  Electron spin resonance spectrum  Free radical  
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