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晋城无烟煤的NaOCl氧化

发表时间:2011-09-30  浏览量:1165  下载量:524
全部作者: 柳方景,魏贤勇,朱影,卿宇,路瑶,宗志敏
作者单位: 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
摘 要: 在温和条件下对晋城无烟煤进行NaOCl氧化,用二氯甲烷萃取反应混合物得到有机相和水相。将有机相和水相用重氮甲烷酯化,使用傅里叶变换红外光谱(Fourier transform infrared spectroscopy, FTIR)和质谱联用(gas chromatopraphy-mass spectrometry, GC/MS)分析可溶氧化产物的分布。结果表明:氧化产物主要为苯多酸,另外还含有少量一元脂肪酸和二元脂肪酸以及其他化合物。这说明晋城无烟煤富含缩合芳环结构,而侧链与桥链结构则较少。苯多酸中苯二甲酸的含量最高,而苯六甲酸含量最少。氧化产物中检测到了较多含氯的化合物,说明氧化过程中发生了氯代反应。
关 键 词: 煤炭能;晋城煤;NaOCl氧化;苯多酸
Title: Oxidation of Jincheng Anthracite with NaOCl
Author: LIU Fangjing, WEI Xianyong, ZHU Ying, QING Yu, LU Yao, ZONG Zhimin
Organization: Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology
Abstract: Jincheng anthracite was subjected to NaOCl oxidation under mild conditions. The reaction mixture was subjected to extraction with dichloromethane to afford aqueous phase and organic phase followed by esterification with CH2N2. The products were analyzed with Fourier transform infrared spectroscopy (FTIR) and gas chromatopraphy-mass spectrometry (GC/MS). The results showed that benzene polycarboxylic acids were the main products from the reaction including few alkanoic acids and other species, indicating that Jincheng anthracite contained greater quantities of polycyclic aromatic compounds while contained few side chain and bridge chain structure. Phthalic acid was the most abundant species in benzene polycarboxylic acids while benzene hexacarbonic acid was the least. A lot of chloro-substituted compounds were detected in the products indicating that chloro-substituted reaction was happened in the reaction.
Key words: coal energy; Jincheng coal; NaOCl oxidation; Benzene polycarboxylic acids
发表期数: 2011年9月第18期
引用格式: 柳方景,魏贤勇,朱影,等. 晋城无烟煤的NaOCl氧化[J]. 中国科技论文在线精品论文,2011,4(18):1624-1628.
 
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