玉米秆超临界乙醇解聚产物分析  

Analysis of Depolymerization Product of Cornstalk in Supercritical Ethanol

作　　者：唐仕荣[1,2] 路瑶[1] 周磊[1] 夏纯杰[1] 魏贤勇[1] 宗志敏[1] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221008 [2]徐州工程学院,江苏徐州221008

出　　处：《安徽农业科学》2009年第11期4869-4870,4949,共3页Journal of Anhui Agricultural Sciences

基　　金："973计划"项目(2007CB210205);江苏省自然科学基金项目(BK2007036);中国矿业大学优秀创新团队建设基金(2004ZCX007-2);中国矿业大学科学研究基金(2006B013);徐州市科技发展基金项目(X20052393)

摘　　要：[目的]研究玉米秆在超临界乙醇条件下的解聚产物。[方法]采用FTIR和GC/MS分析解聚产物。[结果]超临界乙醇解聚产物成分十分复杂,GC/MS分析鉴定出89种有机化合物,其中72种为含氧化合物,主要有酯、酚、醚、酮和醇等,还检测出少量烷烃、烯烃、芳烃、苯硫酚和含氮化合物,反映了解聚产物的高含氧量和低含氮硫量的特性。其中42.7%乙酯类可能是C12-C30的饱和脂肪酸、部分不饱和脂肪酸、邻苯二甲酸或苯丙酸等与乙醇酯化的结果;而22.9%的苯酚和苯二酚类物质、芳烃类及甲氧基苯类物质可能来源于木质素在超临界乙醇中的解聚作用。[结论]玉米秆的超临界乙醇解聚产物成分十分复杂,乙醇参与了玉米秆的超临界解聚反应。[Objective] The depolymerization product of cornstalk in supercritical ethanol was studied.[Method] The depolymerization product was analyzed with FTIR and GC/MS.[Result] The results showed that its components were quite complex,and 89 organic compounds were identified.There were 72 kinds of oxygen-containing organic compounds which included esters,phenols,aethers,ketones and alcohols in the depolymerization product,small amounts of alkanes,alkenes,arenes,thiophenol and nitrogen-containing organic compounds were also detected,which showed that characteristics of the product with high oxygen content,low nitrogen and sulphur content.The content of ethyl esters was 42.7%,which indicated that esterification reactions of fatty acids,phthalic acids or phenylpropionic acids with ethanol.Phenols（22.9%）,arenes and methoxybenzenes might come from depolymerization products of lignin in supercritical ethanol.[Conclusion] Components of the depolymerization product were quite complex,and ethanol involved in depropagation reaction of cornstalk in supercritical ethanol.

关 键 词：玉米秆 超临界 解聚 GC/MS 乙醇 

分 类 号：S513[农业科学—作物学]