燃料化学学报2017，Vol.45Issue(9)：1064-1073,10.
二苯乙烯对秸秆纤维素超临界乙醇裂解转化液化产物的影响
Effects of diphenylethene on products produced during cornstalk cellulose liquefaction in supercritical ethanol
摘要
Abstract
With 1,1-diphenylethene (DPE) as the polymerization inhibitor,the effects of DPE concentration (dosage) and reaction temperature on the active fragments transforming to liquefaction products during cellulose liquefaction in supercritical ethanol were investigated using an autoclave.As the DPE concentration increases,the yield of volatile compounds decreases by 25.4％,while the yield of bio-oil increases to 39.8％,and the cellulose conversion rate decreases gradually.With the increasing of reaction temperature,the cellulose conversion rate reaches to 85.5 ％ sharply and the volatile compounds also increases fastly,but the maximum biooil yield drops to 34.6％.GC-MS analysis shows that ketones,esters,alkanes,alcohols,acids and the DPE derivatives are dominant platform chemicals in the bio-oil.A lot of active fragments (such as CH3 CH2-,HO-,H-,CH3-,etc.) produced from cellulose pyrolysis in supercritical ethanol are trapped by a higher concentration of DPE to form DPE derivatives,which has a strong steric effect on the fragments transforming to platform chemicals.With the increasing of temperature,the enhanced pyrolysis of cellulose by ethanol radicals is more significant in comparison with the inhibition of DPE,resulting in an improvement in the content of platform chemicals.关键词
二苯乙烯/秸秆纤维素/超临界乙醇/裂解/平台化合物Key words
diphenylethene/cornstalk cellulose/supercritical ethanol/liquefaction/platform chemicals分类
能源与动力引用本文复制引用
黎巍,刘志威,解新安,孙娇,樊荻,魏星..二苯乙烯对秸秆纤维素超临界乙醇裂解转化液化产物的影响[J].燃料化学学报,2017,45(9):1064-1073,10.基金项目
The project was supported by the National Natural Science Foundation of China (21576107) and Guangdong Provincial Science and Technology Program Foundation of China (2014A010106024).国家自然科学基金(21576107)和广东省科技计划(2014A010106024)项目资助 （21576107）
