两种煤的次氯酸钠水溶液降解产物的分离与分析

宫贵贞; 魏贤勇; 宗志敏

两种煤的次氯酸钠水溶液降解产物的分离与分析

1.
中国矿业大学煤炭加工与高效洁净利用教育部重点实验室, 江苏徐州 221008;
2.
徐州工程学院化学化工学院, 江苏徐州 221008

基金项目: 国家自然科学基金重点项目(20936007);国家自然科学基金面上项目(50974121);国家自然科学基金委员会创新研究群体科学基金(50921002);2010年度"江苏省普通高校研究生科研创新工程"(CX10B_145Z)。

详细信息

作者简介:
宫贵贞(1973- ), 女, 河北邢台人, 博士, 从事碳资源的定向转化与高附加值利用方面的研究, E-mail:ggz72@163.com。

中图分类号: TQ53
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出版历程
- 收稿日期: 2011-07-01
- 修回日期: 2011-10-07
- 刊出日期: 2012-01-31

Separation and analysis of the degradation products of two coals in aqueous NaOCl solution

1.
Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining and Technology, Xuzhou 221008, China;
2.
School of Chemical Engineering, Xuzhou Institute of Technology, Xuzhou 221008, China

摘要

摘要: 两种煤于温和条件下在次氯酸钠水溶液中进行降解,所得水溶液经酸化后,水溶物依次用乙醚、CS₂、石油醚、乙酸乙酯和苯进行分级萃取,萃取物经重氮甲烷酯化后用GC/MS分析。结果发现氯代物、脂肪酸和芳酸是煤的NaOCl水溶液降解的典型化合物,不同极性溶剂分级萃取可以实现产物的初步族组分分离。通过该研究建立煤的次氯酸钠氧化反应混合物有效分离和分析的方法,为煤的高附加值利用提供有效的途径。
- 煤氧化 /
- 次氯酸钠 /
- 分离 /
- GC/MS分析
Abstract: Two coals were oxidized with aqueous NaOCl solution under mild conditions. The reaction mixture acidified was sequentially extracted with ethoxyethane, CS₂, petroleum ether, acetic ester and benzene, followed esterification by CH₂N₂ and analysis with GC/MS. The results show that chloro-substituted compounds, aliphatic acids and aromatic polycarboxylic acids are main products. The oxidative product was sequentially extracted with different polar solvents and achieved a simple group separation. Effective separation and analysis of oxidation products of coal in aqueous NaOCl solution, established by the study, provides a feasible method for high value-added use of coal.
- coal oxidation /
- aqueous NaOCl solution /
- separation /
- GC/MS analysis

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参考文献(21)

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