常压连续反应性萃取法由预处理生物质制备乙酰丙酸(cited: 2)

采用双相联系流反应性萃取技术实现常压下小麦秸秆向乙酰丙酸的转化，其中生物质在水相中完成降解，形成乙酰丙酸，而后比水密度大的有机相作为乙酰丙酸的萃取相，把生成的乙酰丙酸萃取到有机相，并经过虹吸到收集瓶中，有机相经蒸馏可反复使用，实现了预处理生物质到乙酰丙酸的高效转化，乙酰丙酸最大的产率为30.66%.

Conversion of Pretreated Biomass into Levulinic Acid via Continuous Extraction at Atmosphere Pressure(cited: 2)

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 organicsolvent 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 conditionson the LA conversion have been studied. The study provides a new route to convert biomass to valuable chemicals at atmosphere pressure.