【摘要】 利用化学分析和红外光谱研究了过渡金属离子光催化氧化煤中腐植酸含量和结构的变化 .表明煤中腐植酸的含量和种类随光照时间和添加金属离子的不同而有差异 ,其中过渡金属离子 La3 + ,Fe3 + 和 Co2 + 的影响较大 ,其中稀土金属离子 La3 + 的影响最为显著 ,腐植酸含量提高约一倍 .La3 + 催化煤样抽提腐植酸中多以羧基存在 ,而在 Fe3 + 催化煤样抽提腐植酸中多以羧酸盐存在更多还原

【Abstract】 The contents and structures of humic acids in Shenfu coal photoactivated oxidization by transition metal ion were investigated by the methods of chemical analysis and infrared. The results show that the contents and types of humic acids are dependent on UV-irradiation ( λ =254 nm) and added metal ions. The ions of iron, cobalt and lanthanum have remarkable effects on photoactivate oxidization of Shenfu coal, especially in presence of lanthanum ion, humic acids content increases from 15.4% of photooxidization Shenfu coal to 31.0%. The humic acids extracted in sample adding lanthanum ion mainly exist in the forms of carboxyl, but in carboxylates in sample adding iron ion.更多还原