弱极性条件下重质碳资源中有机物的光催化氧化转化  

Organic Matters Conversion Law in Heavy Carbon Resources Under UV Light Illumination

作　　者：解恒参[1,2] 宗志敏[2] 张士华[2] 魏贤勇[2] 

机构地区：[1]江苏建筑职业技术学院科技处,徐州221116 [2]中国矿业大学化工学院,徐州221008

出　　处：《武汉理工大学学报》2013年第7期123-129,共7页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50974121);国家住房和城乡建设部科学技术项目(2013-k6-12);徐州市2012年科技计划(XZZD1205)

摘　　要：对分析纯试剂液体石蜡、苯、甲苯、二甲苯、苯酚、萘、四氢萘、十氢萘等分别进行光催化氧化,反应混合物分离后进行GC-MS分析鉴定。结果表明,光催化氧化产生的自由基是氧化反应发生的动力;支链烷烃的氧化易于正构烷烃;活性氢和给电子基团的存在更有利于正构烷烃或苯环芳烃的解聚;并非光照时间越长就会得到更好的效果,长时间的光辐射可能导致解聚的中间产物重新交联、反应成分更加复杂不利于分离;随着光催化氧化反应的进行,溶液的极性增强,更有利于光解聚反应的进行;稠环芳环化合物较单环化合物更易发生光催化氧化而开环。To discover the law of organic substances transform in heavy carbon resources（HCRs） as illuminated with ultraviolet light and to promote HCRs utilization efficiency,as compounds,commercial analytical pure organic reagents liquid paraffin,benzene,toluene,xylene,phenol,tetralin,decalin and naphthalene were oxidized by photochemical technology respectively and studied with GC-MS analyses.The results show that free radicals play an important role in the reaction,branched-chain alkane is more conducive to depolymerization in comparison with normal alkane and benzene ring aromatic hydrocarbons because of the presence of active hydrogen or the electron donating group.A long period of light radiation can improve photooxidation effectively but not longer illumination time will get better results,and impossibly lead to the depolymerization of intermediate re-crosslinking,so that the reaction component is not conducive to more complex separation.With reaction proceeds,the polarity of the solution is enhanced more conducive the depolymerization reaction,and condensed polycyclic aromatic ring compounds are more susceptible to photocatalytic oxidation and open-loop than monocyclic compounds.

关 键 词：模型化合物 重质碳资源 光催化氧化 反应机理 

分 类 号：TQ533[化学工程—煤化学工程]