温和条件下徐州原煤和精煤的双氧水氧化产物分析  

Analysis of Produces from the Oxidation of Xuzhou Raw Coal and Ultra-pure Coal with Hydrogen Peroxide Under Mild Conditions

作　　者：李保民[1] 田誉娇[1] 谢瑞伦 张海侠[1] 王晓燕[1] 魏贤勇[1,3] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]济宁碳素晨光集团煤化研发中心,山东济宁272053 [3]武汉科技大学湖北省煤转化与新型炭材料重点实验室,湖北武汉430081

出　　处：《中国矿业大学学报》2010年第5期716-722,共7页Journal of China University of Mining & Technology

基　　金：国家自然科学基金委员会创新研究群体科学基金项目(50921002)

摘　　要：室温常压下,通过对徐州烟煤进行CS2/NMP混合溶剂萃取和反萃取制备出一种棕褐色的精煤颗粒,用TEM和FTIR对其结构进行表征,结果表明:精煤颗粒超细微,粒径达到纳米级;颗粒近乎无灰,为超纯有机质.在60℃下用30%的双氧水溶液分别氧化徐州原煤和精煤,通过计算比较了两种氧化煤的产率;用GC/MS对反应混合物中的水不溶物的CS2可溶物和水溶物的苯可溶物进行了分析,并用FTIR对比分析了两煤样氧化前后基团差别以及反应混合物中水溶物的苯不溶物.结果表明:精煤因其颗粒小,反应活性大,与原煤相比在温和的条件下更易于氧化,氧化后获得的酚、醇、醚、酯、羧酸和酸酐类含氧化合物更丰富.The Xuzhou soft coal was extracted and reverse extracted with carbon disulfide and N-melthy-2-pyrolidinone（CS2/NMP） mixed solvent under mild conditions（room temperature and normal atmosphere） to prepare a kind of brown particles of ultra-pure coal.The structures of particles were characterized by TEM and FTIR.The results show that the nanometer particles of ultra-pure coal are superfine and super-clean organic matter and basically free of ash.The Xuzhou raw coal and ultra-pure coal were oxidized in 30% hydrogen peroxide aqueous solution at 60 oC.The yields of two kinds of oxidized coals were compared by calculation.The CS2-soluble fraction from water-insoluble residue and benzene-soluble fraction from aqueous solution in the reaction mixture were analyzed with GC/MS.The groups differences of the two coal samples before and after oxidation and benzene-insoluble fraction from aqueous solution were analyzed with FTIR.The results indicate that the ultra-pure coal is more likely to be oxidized compared with the raw coal under mild conditions because of its smaller particle size and stronger reaction activity.The richer oxygenous compounds,including phenols,alcohols,ethers,esters,carboxylic acids and anhydrides can be obtained.

关 键 词：精煤 双氧水 氧化 GC/MS分析 FTIR分析 

分 类 号：TQ530[化学工程—煤化学工程]