霍林河褐煤化学结构特性的13C NMR与FTIR对比分析

doi:10.11949/j.issn.0438-1157.20170330

化工学报 ›› 2017, Vol. 68 ›› Issue (11): 4272-4278.DOI: 10.11949/j.issn.0438-1157.20170330

霍林河褐煤化学结构特性的¹³C NMR与FTIR对比分析

徐芳^1,2, 刘辉¹, 王擎³, 刘营³

1 哈尔滨工业大学能源科学与工程学院, 黑龙江哈尔滨 150001;
2 东北电力大学教务处, 吉林省吉林市 132012;
3 东北电力大学能源与动力工程学院, 吉林省吉林市 132012

收稿日期:2017-03-30 修回日期:2017-07-26 出版日期:2017-11-05 发布日期:2017-11-05
通讯作者: 刘辉
基金资助:
国家自然科学基金项目（51476045）。

Comparison of Huolinhe lignite structural features by using ¹³C NMR & FTIR techniques

XU Fang^1,2, LIU Hui¹, WANG Qing³, LIU Ying³

1 School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China;
2 Academic Adminstration, Northeast Electric Power University, Jilin 132012, Jilin, China;
3 School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, Jilin, China

Received:2017-03-30 Revised:2017-07-26 Online:2017-11-05 Published:2017-11-05
Supported by:
supported by the National Natural Science Foundation of China (51476045).

摘要/Abstract

摘要：

采用¹³C NMR及FTIR对霍林河褐煤的化学结构特性进行深入分析，通过¹³C NMR计算得到霍林河褐煤包含34.32%的脂肪族碳、61.25%的芳香族碳以及4.43%的羰基碳。平均每个芳环团簇包含1~2个芳香环，每个芳香环中平均碳原子取代数为3~4。平均亚甲基碳链数为1.4，烷链支化度为25.47%，说明脂肪族多以短链分支形式存在。通过对霍林河褐煤红外光谱进行分峰拟合，计算得到煤的FTIR结构参数（平均亚甲基碳链数、芳香环取代度、烷链支化度）与¹³C NMR计算结果相吻合。虽然芳碳率（f_ar-F=55.37%）与¹³C NMR计算结果存在一定的偏差，但是FTIR很大程度上仍然可以反映煤的碳骨架结构特性。

关键词: 霍林河褐煤, ¹³C NMR, FTIR, 对比分析

Abstract:

The chemical structures of Huolinhe lignite (HLHM) were characterized with ¹³C NMR & FTIR techniques. According to ¹³C NMR analysis, HLHM consisted of 34.32% aliphatic carbons, 61.25% aromatic carbons and 4.43% carbonyl carbons. Each aromatic cluster contained 1-2 rings on average and the number of substituents on each aromatic ring was 3-4. The length of average methylene chain was 1.4 and the branched degree of aliphatic chain was 25.47%, showing the aliphatic carbons mainly consisted in the form of short chain. Several structural parameters were obtained by calculation based on FTIR data and curve-resolved band. Structural parameters (average methylene chain length, substituted degree of aromatic ring, aliphatic chain branched degree) obtained by FTIR analysis were consistent with the results of ¹³C NMR analysis. Although aromatic carbon rate existed certain deviation between FTIR and ¹³C NMR results, FTIR analysis can still reflect the carbon skeleton structure characteristics of coal in some ways.

Key words: Huolinhe lignite, ¹³C NMR, FTIR, comparison analysis

中图分类号:

TQ523

徐芳, 刘辉, 王擎, 刘营. 霍林河褐煤化学结构特性的¹³C NMR与FTIR对比分析[J]. 化工学报, 2017, 68(11): 4272-4278.

XU Fang, LIU Hui, WANG Qing, LIU Ying. Comparison of Huolinhe lignite structural features by using ¹³C NMR & FTIR techniques[J]. CIESC Journal, 2017, 68(11): 4272-4278.

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霍林河褐煤化学结构特性的¹³C NMR与FTIR对比分析

Comparison of Huolinhe lignite structural features by using ¹³C NMR & FTIR techniques

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