两种萃余煤的温和氧化产物的组成分析

COMPONENT ANALYSIS OF PRODUCTS FROM THE OXIDATION OF TWO COAL RESIDUES UNDER MILD CONDITION

分别用二硫化碳 ( CS2 ) /四氢呋喃 (体积比 1∶ 2 )混合溶剂和环己酮对义马煤和美国Pocahontas No.3( P3)标准煤样进行了彻底萃取 ,在 60℃下用 30 %双氧水溶液分别氧化了所得的两种萃余煤 ,用 GC/MS对反应混合物中的水溶液的苯可溶物和水不溶物的 CS2 可溶物进行了分析 .结果表明 :在所得水溶液的苯可溶物中都检测出苯酚 ;在由义马萃余煤氧化所得的水不溶物的CS2 可溶物中检测出多种含氧有机化合物和长链烷烃 ,而在 P3萃余煤氧化所得的水不溶物的 CS2可溶物中只检测到一系列长链烷烃 .

Yima and American Pocahontas No 3 coal samples were exhaustively extracted with carbon disulfide (CS 2)/tetrahydrofuran (1∶2, V/V) mixed solvent and cyclohexanone respectively.The resulting two coal residues were oxidized in 30% hydrogen peroxide aqueous solution at 60 ℃.Benzene-soluble fraction from aqueous solution and CS 2-soluble fraction from water-insoluble residue in the reaction mixture were analyzed with GC/MS. The results show that phenol was detected in the benzene-soluble fraction and that a number of oxygen-containing compounds and long-chain alkanes were detected in the CS 2-soluble fraction from the oxidation of YM coal residue, whereas only a series of long-chain alkanes were detected in the CS 2-soluble fraction from the oxidation of P3 coal residue.