Conversion of Pretreated Biomass into Levulinic Acid via Continuous Extraction at Atmosphere Pressure  

常压连续反应性萃取法由预处理生物质制备乙酰丙酸

作　　者：范明慧[1] 闫立峰[1] 

机构地区：[1]中国科学技术大学化学物理系和安徽省生物质洁净能源实验室,合肥230026

出　　处：《Chinese Journal of Chemical Physics》2014年第1期92-98,I0004,共8页化学物理学报（英文）

摘　　要：Conversion of biomass to chemicals or fuels under mild condition is still a challenge. As a platform molecule for chemicals and fuels, levulinic acid （LA） has been prepared by lique-faction of biomass at high pressure. In order to carry out the conversion from wheat straw to LA at atmosphere pressure, continuous extraction of the reactive system by an organic solvent with a higher density than that of water was utilized for degradation of pretreated biomass. Yields of LA were measured by means of gas chromatography-mass spectrometry and nuclear magnetic resonance. The results revealed that a maximum yield of 30.66% of LA can be obtained from wheat straw. In addition, the effects of biomass pretreated conditions on the LA conversion have been studied. The study provides a new route to convert biomass to valuable chemicals at atmosphere pressure.

关 键 词：BIOMASS Pretreatment Continuous extraction Levulinic ＆cid Atmosphere pressure 

分 类 号：O6[理学—化学]