EPR study of the bituminous coal

EPR study of the bituminous coal
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烟煤的EPR研究

DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
S. Duber
S. Duber
中科院分区：
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文献类型：
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作者：
B. Pilawa;A. Więckowski;S. Duber

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本文研究了乙二胺对12种波兰烟煤（75.3- 85.8%C）EPR谱的影响.煤-乙二胺体系的EPR谱由叠加的窄线和宽线组成。测定了煤样光谱各组分的线宽与煤样的煤级之间的关系。测量了煤的大分子相和分子相的顺磁中心浓度随煤阶的变化。对选定的样品观察了乙二胺引起的EPR信号变化的动力学
The influence of ethylenediamine on the EPR spectrum of 12 Polish bituminous coals (75.3-85.8 %C) has been studied. The EPR spectrum of the coal-ethylenediamine system consists of superimposed narrow and broad lines. A relationship between the linewidths of respective components of the spectrum and the rank of the coal sample has been determined. The concentration of paramagnetic centres has been measured for macromolecular and molecular phases of the coal as a function of coal rank. The kinetics of the change of the EPR signal caused by ethylenediamine has been observed for a selected sample