神华长焰煤大分子结构特征的研究

马伦; 陆大荣; 梁汉东; 朱书全; 丁毅; 李珊; 陈宇飞

神华长焰煤大分子结构特征的研究

马伦^1,2,
陆大荣³,
梁汉东^1,,
朱书全²,
丁毅¹,
李珊^1,2,
陈宇飞^1,2

1.
中国矿业大学(北京)煤炭资源与安全开采国家重点实验室, 北京 100083;
2.
中国矿业大学(北京)化学与环境工程学院, 北京 100083;
3.
中国核电工程有限公司郑州分公司, 河南郑州 450052

基金项目: 国家重点基础研究发展规划(973计划, 2012CB214901); 煤炭资源与安全开采国家重点实验室(中国矿业大学(北京))大学生科技创新计划(CRSM2009B017)。

详细信息

通讯作者:
梁汉东(1959- ), 010-62331029, E-mail: HDL6688@vip.sina.com, 研究方向为煤化学、环境化学。

中图分类号: TQ531.5
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出版历程
- 收稿日期: 2012-10-24
- 修回日期: 2012-12-23
- 刊出日期: 2013-05-30

Preliminary study on macromolecular structure characteristics of Shenhua long flame coal

1.
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology(Beijing), Beijing 100083, China;
2.
School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
3.
China Nuclear Power Engineering Company Limited Zhengzhou Branch, Zhengzhou 450052, China

摘要

摘要: 利用ASE 350型超声快速溶剂抽提仪,在高温高压下对神华长焰煤(SH)进行二硫化碳/N-甲基吡咯烷酮(CS₂/NMP)混合溶剂抽提,抽提率约为25%(质量分数)。将得到的抽提残渣(SHC)进行钌离子催化氧化(RICO)降解反应,并对产物进行了离子色谱(IC)检测和以四甲基氢氧化铵(TMAH,25%甲醇溶液)为衍生化试剂的热辅助-在线甲酯化后的气质联用仪(GC-MS)检测分析。结果表明,神华长焰煤大分子结构中含有C_2~28烷基侧链,C_2~22的连接芳环的烷基桥链,有相对较多的醚键链接的芳环结构存在,芳环缩合程度相对较低(主要以含有2~4个苯环的共轭结构为主),有较多的醚键链接的芳环结构及羟基(-OH)、羰基(=C=O)和甲氧基(-OCH₃)等形式含氧基团以及含硫和氮等杂原子化合物的存在。
- 神华长焰煤 /
- 溶剂抽提 /
- RICO /
- GC-MS
Abstract: By using ASE 350 (Accelerated Solvent Extraction) Shenhua long flame coal was extracted with mixed solvent of carbon disulfide/N-methyl pyrrolidone (CS₂/NMP) under high temperature and high pressure, and the extraction rate was about 25%. The extracted residue was degraded by ruthenium ion catalytic oxidation (RICO), then the products were examined with IC and GC/MS, which depends on thermal auxiliary-methyl esterification of tetramethyl ammonium hydroxide (TMAH, 25% methanol solution). The results show that the macromolecular structure of Shenhua coal contains alkyl side chains at a length of C_2~28 and alkyl bridge between aromatic rings at a length of C_2~22. The aromatic condensation level is relatively low (most are conjugated structure of 2~4 benzene rings). And there are many ether linked aromatic structures, oxygen groups like hydroxyl (-OH), carbonyl (C=O), methoxy (-OCH₃), and heteroatom compounds with sulfur and nitrogen.
- Shenhua long flame coal /
- solvent extraction /
- RICO /
- GC-MS

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