油页岩干酪根化学结构特性分析

doi:10.11949/j.issn.0438-1157.20141798

化工学报 ›› 2015, Vol. 66 ›› Issue (5): 1861-1866.DOI: 10.11949/j.issn.0438-1157.20141798

油页岩干酪根化学结构特性分析

王擎, 黄宗越, 迟铭书, 石聚欣, 王智超, 隋义

油页岩综合利用教育部工程研究中心(东北电力大学), 吉林省吉林市 132012

收稿日期:2014-12-05 修回日期:2015-01-01 出版日期:2015-05-05 发布日期:2015-05-05
通讯作者: 王擎
基金资助:
国家自然科学基金项目(51276034)。

Chemical structure analysis of oil shale kerogen

WANG Qing, HUANG Zongyue, CHI Mingshu, SHI Juxin, WANG Zhichao, SUI Yi

Engineering Research Centre of Oil Shale Comprehensive Utilization, Ministry of Education, Northeast Dianli University, Jilin 132012, Jilin, China

Received:2014-12-05 Revised:2015-01-01 Online:2015-05-05 Published:2015-05-05
Supported by:
supported by the National Natural Science Foundation of China (51276034).

摘要/Abstract

摘要： 利用先进的测试技术对5种不同地区的油页岩干酪根分别进行XRD、¹³C NMR与FT-IR分析,获得重要结构信息。通过XRD检测分析,确定5种干酪根以长程无序的聚合状态存在。采用¹³C NMR技术表征出干酪根的碳原子化学结构,并获得碳骨架结构的18个重要参数。最后利用FT-IR技术对干酪根官能团进行定性分析,与 ¹³C NMR实验结果互相验证,得到干酪根化学结构的详细信息。结果表明:油页岩干酪根脂碳结构最多,高达60%～90%。其中又以亚甲基碳为主,有77%～90%,且多数为直链结构,脂环或支链结构较少。芳碳结构除桦甸以单环为主外,其余均为单环和多环结构并存,其中多环结构以迫位缩合为主。氧结构总体以碳氧单键(醇、酚或醚基)和C=O两种形式存在,其中羧基类C=O多于羰基类C=O。变质程度低的干酪根中存在较多C=O,而高变质程度的干酪根则以碳氧单键C-O为主。

关键词: 干酪根, 固体核磁, 红外光谱, 化学结构

Abstract: Five different oil shale kerogens were analyzed with advanced testing techniques (XRD, ¹³C NMR and FT-IR) to obtain important structural information. The long-range disordered state of aggregation was also confirmed by XRD. Using ¹³C NMR spectroscopy, 18 characteristic parameters of carbon skeleton structure were obtained. Detailed information about the chemical structure of kerogen was obtained through verifying the results of ¹³C NMR experiments with the qualitative analysis of kerogen groups made by FT-IR technique. The aliphatic structure of oil shale kerogen was up to 60%—90%, with the methylene carbon occupying the dominant position of 77%—90%, and most of the aliphatic structure were straight-chain while less alicyclic or branched chain. In addition to Huadian oil shale with a monocyclic aromatic carbon structure, the other four oil shale kerogens were co-existing monocyclic and polycyclic rings, with the latter mainly peri-condensed. The oxygen structure was C-O (alcohol, phenol, ether) and C=O, and carboxyl class was more than carbonyl class C=O. More C=O in kerogen was due to a low degree of metamorphism, while a high degree of metamorphism resulted in more C-O.

Key words: oil shale kerogen, solid state ¹³C NMR, FT-IR spectroscopy, chemical structure

中图分类号:

TK16

王擎, 黄宗越, 迟铭书, 石聚欣, 王智超, 隋义. 油页岩干酪根化学结构特性分析[J]. 化工学报, 2015, 66(5): 1861-1866.

WANG Qing, HUANG Zongyue, CHI Mingshu, SHI Juxin, WANG Zhichao, SUI Yi. Chemical structure analysis of oil shale kerogen[J]. CIESC Journal, 2015, 66(5): 1861-1866.

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油页岩干酪根化学结构特性分析

Chemical structure analysis of oil shale kerogen

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