Dehydration of d-glucose in high temperature water at pressures up to 80 MPa
- 作者：Taku Michael Aida ; Yukiko Sato ; Masaru Watanabe ; Kiyohiko Tajima ; Toshiyuki Nonaka ; Hideo Hattori ; Kunio Arai
- 关键词：Biomass ; d-Glucose ; Carbohydrates ; 5-Hydroxymethylfurfural ; Supercritical water
- 刊名：The Journal of Supercritical Fluids
- 出版年：2007
- 期刊代码：60_08968446
- 类别：ce
- 出版时间：April 2007
- 卷：40
- 期：3
- 页码：381-388
- 文件大小：865 K
摘要
Reaction of d-glucose in water to yield 5-hydroxymethylfurfural (5-HMF), 1,2,4-benzenetriol (BTO) and furfural was studied at high temperatures (up to 400 °C) and high pressures (up to 80 MPa) using a continuous flow reactor. Maximum temperature and pressure conditions gave maximum furfural yield. Increasing pressure from 40 to 70 and 80 MPa enhanced dehydration reactions to 5-HMF, but also enhanced hydrolysis of 5-HMF leading to the production of BTO and thus lead to lower yields of 5-HMF (below 10%). Remarkably, the dehydration reaction to 5-HMF and the hydrolysis of 5-HMF were both enhanced by the increase in water density at 400 °C.