化工学报2017，Vol.68Issue(11)：4272-4278,7.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
Comparison of Huolinhe lignite structural features by using13C NMR & FTIR techniques
摘要
Abstract
The chemical structures of Huolinhe lignite (HLHM) were characterized with13C 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 of13C NMR analysis. Although aromatic carbon rate existed certain deviation between FTIR and13C NMR results, FTIR analysis can still reflect the carbon skeleton structure characteristics of coal in some ways.关键词
霍林河褐煤/13CNMR/FTIR/对比分析Key words
Huolinhe lignite/13C NMR/FTIR/comparison analysis分类
化学化工引用本文复制引用
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):4272-4278,7.基金项目
国家自然科学基金项目(51476045). supported by the National Natural Science Foundation of China (51476045). （51476045）
