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Mechanism for Removal of Organic Sulfur from Guiding Subbituminous Coal by Electrolysis

机译：电解法从亚烟煤中脱除有机硫的机理

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摘要

ABSTRACT: Ash in Guiding subbituminous coal (GSBC) was removed by treatment with dilute acids. The treated GSBC (TGSBC) was extracted with isopropanol (IP) to afford IP-extractable fraction (IPEF). TGSBC was sequentially extracted with petroleum ether, carbon disulfide, acetone, and methanol. Octane-1-thiol and thiophene were selected as model compounds (MCs) for organic sulfurs in GSBC. MCs and extracted residue (ER) of TGSBC were electrolyzed in an aqueous NaCl solution. Reaction mixtures from the electrolysis of MCs were extracted with cyclohexane. The electrolyzed extracted residue (EER) was extracted with the same method as TGSBC. The extracts were analyzed with gas chromatography/mass spectrometry (GC/MS). ER and EER were analyzed with Fourier transform infrared (FT1R) spectrometry. Three organic sulfurs were detected in IPEF from TGSBC with GC/MS. FTIR analysis shows that ER electrolysis increased oxygen-containing functional groups but decreased organic suliurs. Disulfide, sulfcuride, sulfone, and sulfonic acid were detected by GC/MS and FTIR analyses. The mechanism for removal of organic sulfur during GSBC electrolysis was discussed.
机译：摘要：通过用稀酸处理除去了指导性次烟煤（GSBC）中的灰分。用异丙醇（IP）萃取处理过的GSBC（TGSBC），以提供IP萃取级分（IPEF）。依次用石油醚，二硫化碳，丙酮和甲醇萃取TGSBC。选择辛烷-1-硫醇和噻吩作为GSBC中有机硫的模型化合物（MC）。将TGSBC的MC和提取的残留物（ER）在NaCl水溶液中进行电解。来自MC的电解的反应混合物用环己烷萃取。电解提取残渣（EER）的提取方法与TGSBC相同。提取物用气相色谱/质谱（GC / MS）分析。 ER和EER用傅立叶变换红外（FT1R）光谱分析。使用GC / MS在TGSBC的IPEF中检测到三种有机硫。 FTIR分析表明，ER电解增加了含氧官能团，但减少了有机苏糖醛。通过GC / MS和FTIR分析检测了二硫化物，硫化氢，砜和磺酸。探讨了GSBC电解过程中有机硫的去除机理。

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  • 来源
    《Energy & fuels》 |2011年第julaaaug期|p.3687-3692|共6页
  • 作者

    Shi-Teng Zhong; Wei Zhao; Chen Sheng; Wen-Juan Xu; Zhi-Min Zong; Xian-Yong Wei;

  • 作者单位

    Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining and Technology, Xuzhou 221116, Jiangsu, China,Tengzhou Eastern Steel Cord Co., LTD, Tengzhou 277S00, Shangdong, China;

    Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;

    Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;

    Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;

    Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;

    Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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