Analysis of produces from the oxidation of Xuzhou raw coal and ultra-pure coal with hydrogen peroxide under mild conditions

作者：Li Bao Min^*; Tian Yu Jiao; Xie Rui Lun; Zhang Hai Xia; Wang Xiao Yan; Wei Xian Yong

来源：Journal of China University of Mining & Technology, 2010, 39(5): 716-722.

• Aqueous solutions
• Before and after
• Benzene-soluble fraction
• Coal sample
• FTIR
• FTIR analysis
• GC/MS analysis
• Insoluble residue
• Mixed solvent
• Nanometer particles
• Organic matter
• Oxidition
• Oxidized coal
• Raw coal
• Reaction activity
• Reaction mixture
• Room temperature
• Soft coal
• Soluble fraction
• TEM
• Ultra-pure coal

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°C. 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.

• 出版日期2010-9
• 单位武汉科技大学; 中国矿业大学（北京）