【摘要】 依次用体积比为1∶2的甲醇/四氢呋喃和二硫化碳(CS2)/四氢呋喃混合溶剂对新疆黑岱沟(HDG)煤进行彻底萃取.在40℃和60℃下用30%双氧水溶液氧化得到萃余煤,用GC/MS分析了反应混合物中的水不溶物的CS2可溶物(A)和水溶液的苯可溶物(B),并用FTIR分析了反应混合物中水溶液的苯不溶物(C),以寻求煤的高附加值利用及其大分子结构信息.结果表明:在A中均检出多种羧酸和长链烷烃,在60℃下氧化所得A的收率较高,且其中含氧化合物的种类更多;在40℃下氧化所得B中只检出蒽和少量直链烷烃,在60℃下氧化所得B中只检出少量的蒽;C中羟基和取代芳环含量较高,只是60℃下氧化所得的C的收率更高,且含羟基更丰富.更多还原

【Abstract】 Heidaigou coal sample was exhaustively extracted with methanol tetrahydrofuran(1∶2,V/V) mixed solvent and carbon disulfide(CS2)/tetrahydrofuran(1∶2,V/V) mixed solvent in turn.In order to look for more appending utilization and big molecular structure information of coal,the resulting coal residue was oxidized in 30% hydrogen peroxide aqueous solution at 40 ℃ and 60 ℃.CS2-soluble fraction from water-insoluble residue(A) and benzene-soluble fraction from aqueous solution(B) in the reaction mixture were analyzed with GC/MS;and benzene-insoluble fraction from aqueous solution(C) was analyzed with FTIR.The results show that some fatty acids and many long-chain alkanes were detected in A from the oxidation of HDG coal residue not only at 40 ℃ but also at 60 ℃,but differently,there are more kinds of oxygenous components in A from the oxidation at 60 ℃.The yield of A from the oxidation at 60 ℃ was also higher than that at 40 ℃.Anthracene and several alkanes were detected in B from the oxidation at 40 ℃,but only one kind of anthracene was detected in B at 60 ℃.By FTIR analysis,some groups were detected in C,such as hydroxyl group,substituted aryl group,and so on;but there were more hydroxyl group in C from the oxidation at 60 ℃,and the yield of C from the oxidation at 60 ℃ was much higher than that at 40 ℃.更多还原