引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 866次   下载 1381 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Conversion of Pretreated Biomass into Levulinic Acid via Continuous Extraction at Atmosphere Pressure(cited: 2)
Ming-hui Fan,Li-feng Yan*
Author NameAffiliationE-mail
Ming-hui Fan Department of Chemical Physics and Anhui Province Key Laboratory of Biomass Clean Energy, Univer-sity of Science and Technology of China, Hefei 230026, China  
Li-feng Yan* Department of Chemical Physics and Anhui Province Key Laboratory of Biomass Clean Energy, Univer-sity of Science and Technology of China, Hefei 230026, China lfyan@ustc.edu.cn 
Abstract:
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.
Key words:  Biomass, Pretreatment, Continuous extraction, Levulinic acid, Atmosphere pressure
FundProject:
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)
范明慧,闫立峰*
摘要:
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%.
关键词:  生物质,反应性萃取,乙酰丙酸,常压
DOI:10.1063/1674-0068/27/01/92-98
分类号: