Scholarlink

Abstract <p>Six samples of G (gas) coal differing in yield of volatiles, atomic ratio H/C, and vitrinite reflection coefficient <i>R</i><sub>o,</sub> <sub>r</sub> (0.68–0.75%) are studied by <sup>13</sup>C NMR spectroscopic analysis. With increase in <i>R</i><sub>o,</sub> <sub>r</sub>, the aromatic content <i>f</i><sub>a</sub> of the organic mass in many samples increases from 0.65 to 0.71. This increase in <i>f</i><sub>a</sub> is proportional to the decrease in content of aliphatic carbon in structural fragments within the range 0–51 ppm. The plastic-layer thickness <i>y</i> is lowest for the sample with the highest <i>f</i><sub>a</sub> and lowest carbon content in aliphatic structural fragments of the coal’s organic mass.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

NMR Spectroscopic Analysis of Gas Coal

  • 期刊论文

  • 发表日期：

    2025年8月1日

查看全文
  • N. I. Fedorova,
  • S. Yu. Lyrshchikov

摘要

Abstract

Six samples of G (gas) coal differing in yield of volatiles, atomic ratio H/C, and vitrinite reflection coefficient Ro, r (0.68–0.75%) are studied by 13C NMR spectroscopic analysis. With increase in Ro, r, the aromatic content fa of the organic mass in many samples increases from 0.65 to 0.71. This increase in fa is proportional to the decrease in content of aliphatic carbon in structural fragments within the range 0–51 ppm. The plastic-layer thickness y is lowest for the sample with the highest fa and lowest carbon content in aliphatic structural fragments of the coal’s organic mass.