Comparison of Huolinhe lignite structural features by using <sup>13</sup>C NMR &amp; FTIR techniques

XU Fang; LIU Hui; WANG Qing; LIU Ying

doi:10.11949/j.issn.0438-1157.20170330

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

更新时间：2025-12-10

- Comparison of Huolinhe lignite structural features by using ¹³C NMR & FTIR techniques
- CIESC Journal Issue 11, Pages: 4272-4278(2017)
- 作者机构：
  
  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,吉林市,吉林省,132012
  3. 东北电力大学能源与动力工程学院,吉林市,吉林省,132012
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170330
  CLC： Q523
- Online First：05 November 2017，
  
  Published：05 November 2017
- 稿件说明：
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XU Fang, LIU Hui, WANG Qing, et al. Comparison of Huolinhe lignite structural features by using ¹³C NMR & FTIR techniques[J]. CIESC Journal, 2017, (11): 4272-4278. DOI: 10.11949/j.issn.0438-1157.20170330.
DOI：

XU Fang, LIU Hui, WANG Qing, et al. Comparison of Huolinhe lignite structural features by using ¹³C NMR & FTIR techniques[J]. CIESC Journal, 2017, (11): 4272-4278. DOI: 10.11949/j.issn.0438-1157.20170330. DOI：

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（far-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。

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.

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

DOI：10.11949/j.issn.0438-1157.20170330

摘要

Abstract

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