基于HRTEM的低阶烟煤微晶结构研究

被引:26
作者
任秀彬 [1 ]
辛文辉 [1 ,2 ]
张亚婷 [1 ]
周安宁 [1 ]
机构
[1] 西安科技大学化学与化工学院
[2] 陕西煤业化工集团神木天元化工有限公司
关键词
神府煤; 微晶结构; HRTEM; 分子量分布;
D O I
暂无
中图分类号
TQ531 [煤的性质与测定];
学科分类号
082903 [林产化学加工工程];
摘要
为充分认识煤的微观结构,主要针对神府矿区张家峁煤的微晶结构进行研究。利用HRTEM对煤进行分析获得微晶的晶格条纹,利用基于FFT-IFFT的图像分析方法对晶格条纹进行解析,计算得到煤中微晶的长度及其分布,并与芳核结构参数进行关联。根据煤的微晶长度和芳香度,对煤的平均分子量及其分子量分布进行计算。研究结果表明,神府张家峁煤的微晶长度主要分布在0.25~1.00 nm,对应的多核芳环数在2~4。该煤的平均分子式为C24.63H16.68O4.55,其平均分子量为385.04,分子量主要分布在100~1 400。
引用
收藏
页码:242 / 246
页数:5
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