在温和条件下用NaOCl水溶液氧化胜利褐煤,结果NaOCl水溶液能将胜利煤中大部分有机质转化为小分子水溶性化合物。氧化所得混和物依次用乙醚和乙酸乙酯萃取,经重氮甲烷酯化后用GC/MS进行分析,结果表明所得化合物主要为一元酸--元酸和苯甲酸类化合物。其中苯甲酸类化合物含量最高,其次是一元酸。氯代短链烷酸的含量在一元酸中占的比例较高,而苯甲酸类化合物中苯四甲酸的含量最高。
Shengli brown coal was subject to aqueous NaOCI solution oxidation under mild conditions. The most of organic matter in Shengli coal was converted into small molecule water - soluble species. The reaction mixture was sequentially extracted with ethylether and ethyl acetate followed by GC/MS analysis after esterified with CH2N2. The results showed that alkanoic acids, alkane -α, ω -dicarboxylic acids and benzene polycarboxylic acids were main products from the reaction. Benzene polycarboxylic acids were the richest species followed by alkanoic acids. Short - chain chloro - substituted alkanoic acids accounted for a large proportion, while benzenetetracarboxylic acids were predominant in benzene polycarboxylic acids.