知识与财富的链接
通过重液和离心分离法制备了不同密度级的神府煤组分,在自制的光化学反应试验装置上,采用FTIR分析方法研究了不同密度级的煤超细粉体在光氧化降解过程中的结构变化.探讨了担载金属离子对不同密度级超细煤粉光氧化降解的催化活性.结果表明：不同密度级的煤样其光催化氧化降解的机理不同;在光氧化中,煤的甲基和亚甲基比芳香环更易发生氧化分解反应,同时伴随一定程度的自交联反应;金属离子对煤粉光氧化的催化活性顺序为Ni2+>Co3+> La3+> Ce3+ > Fe3+.
The different density grade components of Shenfu coal were prepared by sink-float method and centrifugal separation.The structural characteristics of Shenfu coal ultra-fine powder in photo-oxidation degradation were studied in a self-made photo-reactor.The catalysis abilities of transition metal ions for coal's components were also discussed.The results indicate that the mechanisms of different density grade's coal components in photo-oxidation degradation are different;the methyl and sub-methyl group are more liable to be photo-oxidized than the aromatic rings in the coal's structure;the order of catalysis abilities of the transition metal ions for coal is Ni~(2+) >Co~(3+) > La~(3+)> Ce~(3+)> Fe~(3+).
