褐煤在离子液体1-丁基-3-甲基咪唑氯盐中热溶及热溶产物的分离与分析

雷智平; 张素芳; 张艳秋; 水恒福; 王知彩; 任世彪

褐煤在离子液体1-丁基-3-甲基咪唑氯盐中热溶及热溶产物的分离与分析

安徽工业大学化学与化工学院煤洁净转化与综合利用安徽省重点实验室, 安徽马鞍山 243002

基金项目: 国家自然科学基金(U1261208, 21176001, 20876001, 21076001, 20936007); 国家重点基础研究发展规划(973计划, 2011CB201300); 安徽工业大学煤洁净转化及其催化技术创新团队项目.

详细信息

通讯作者:
雷智平

中图分类号: TQ531
计量
- 文章访问数: 1429
- HTML全文浏览量: 4
- PDF下载量: 607
- 被引次数: 0
出版历程
- 收稿日期: 2013-05-29
- 修回日期: 2013-06-23
- 刊出日期: 2013-07-30

Thermal extraction of lignite in ionic liquid and separation and characterization of its extracts

School of Chemistry & Chemical Engineering, Anhui Key laboratory of Coal Clean Conversion & Utilization, Anhui University of Technology, Ma'anshan 243002, China

摘要

摘要: 基于离子液体对煤的高效解聚性能,对先锋褐煤(XL)、锡林郭勒褐煤(XLGL)和胜利褐煤(SL)在离子液体1-丁基-3-甲基咪唑氯盐([Bmim]Cl)中的热溶性能进行了研究.同时,对XL在离子液体[Bmim]Cl中的热溶产物进行了分离,并对分离所得各组分进行了分析表征来研究褐煤的结构信息.研究发现,在相同条件下离子液体[Bmim]Cl对不同褐煤的萃取性能显著不同,其顺序为XL>SL>XLGL.先锋褐煤离子液体热溶物可分离为丙酮可溶物、吡啶可溶物和吡啶不溶物,其中,丙酮可溶物(AS)为15.9%、吡啶可溶物(PS)为56.0%、吡啶不溶物(PI) 为28.1%.分析表明,丙酮可溶物中含有长链的脂肪化合物及部分三环、四环等芳香化合物,吡啶可溶物和吡啶不溶物中大多以三环及五环芳香化合物的形式存在.
- 褐煤 /
- 离子液体 /
- 热溶
Abstract: Based on the high efficient depolymerization performance of lignite in ionic liquids, thermal dissolution behaviors of 3 lignites Xianfeng (XL), Xilinggele (XLGL) and Shengli (SL) were investigated. And the thermally dissolved products from XL extracted by ionic liquid 1-butyl-3-methyl imidazole chloride ([Bmim]Cl) were separated and analyzed to explore the structure information of the lignite. It is found that the extraction yield of 3 lignites in ionic liquid [Bmim]Cl is significantly different under the same extraction conditions. The order of extraction yield is: XL > SL > XLGL. The thermally dissolved products of XL during extraction in [Bmim]Cl can be separated into acetone-soluble (15.9%), pyridine-soluble (56.0%), and pyridine-insoluble (28.1%), respectively. Acetone soluble (AS) mainly contains long chain fatty compounds, tricyclic aromatics and tetracyclic aromatic compounds. Pyridine soluble (PS) and pyridine insoluble (PI) mainly contain tricyclic aromatics and pentacyclic aromatics.
- lignite /
- ionic liquid /
- thermal dissolution

HTML全文

参考文献(9)

KOYANO K, TAKANOHASHI T, SAITO I. Catalytic hydrogenation of hypercoal (ashless coal) and reusability of catalyst[J]. Energy Fuels, 2009, 23(7): 3652-3657.

MIURA K, SHIMADA M, MAE K, SOCK H Y. Extraction of coal below 350 ℃ in flowing non-polar solvent[J]. Fuel, 2001, 80(11): 1573-1582.

WIJAYA N, ZHANG L. A critical review of coal demineralization and its implication on understanding the speciation of organically bound metals and submicrometer mineral grains in coal[J]. Energy Fuels, 2011, 25(1): 1-16.

PAINTER P, PULATI N, CETINER R , SOBKOWIAK M, MITCHELL G , MATHEWS J. Dissolution and dispersion of coal in ionic liquids[J]. Energy Fuels, 2010, 24(3): 1848-1853.

LEI Z, WU L, ZHANG Y, SHUI H, WANG Z, PAN C, LI H. Microwave-assisted extraction of xianfeng lignite in 1-butyl-3-methyl-imidazolium chloride[J]. Fuel, 2012, 95: 630-633.

LEI Z, WU L, ZHANG Y, SHUI H, WANG Z, REN S. Effect of noncovalent bonds on the successive sequential extraction of Xianfeng lignite[J]. Fuel Process Technol, 2013, 111: 118-122.

LEI Z, ZHANG Y, WU L, SHUI H, WANG Z, REN S. The dissolution of lignite in ionic liquids[J]. RSC Adv, 2013, 3(7): 2385-2389.

MIURA K, MAE K, LI W, KUSAKAWA T, MOROZUMI F, KUMANO A. Estimation of hydrogen bond distribution in coal through the analysis of OH stretching bands in diffuse reflectance infrared spectrum measured by in-situ technique[J]. Energy Fuels, 2001, 15(3): 599- 610.

KISTER J, GUILIANO M, MILLE G, DOU H. Changes in the chemical structure of low rank coal after low temperature oxidation or demineralization by acid treatment: Analysis by FT-i.r. and u.v. fluorescence[J]. Fuel, 1988, 67(8): 1076-1082.

施引文献

资源附件(0)

访问统计