Welcome to Biomass Chemical Engineering,

›› 2008, Vol. 42 ›› Issue (4): 1-5.

• 研究报告 •     Next Articles

Study on Selective Liquefaction of Wheat Straw with Phenol

XIE Shuang-ping, CHEN Hong-zhang   

  1. National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2007-12-24 Revised:1900-01-01 Online:2008-07-30 Published:2008-07-30

Abstract: It is an important way to liquefy biomass with phenol. The raw material of wheat straw, which is regarded as homo-geneous material in the complete liquefaction, is actually inhomogeneous. In this paper, a selective way is used to make straw liquefied and differences between selective liquefaction and complete liquefaction are also discussed. Results show that: proper catalyst concentration and reaction time, higher phenol dosage with lower temperature are needed to save cellulose and liquefy hemicellulose and lignin. Compared with complete liquefaction, the selective liquefaction, which is more gentle, can preserve cellulose in order to improve the value of raw material. The optimized conditions for selective liquefaction, which are calculated by multivariate regression equations and validated by experiments, are H2SO4 (catalyst mass fraction to whole reaction system, g:g) 3.0%, 100℃, 30 min, phenol:straw ratio (g:g)3:1, in this condition, the residual rate of cellulose is above 70%, and the combined phenol content of the liquefied products can reach 100%.

Key words: selective liquefaction, complete liquefaction, uniform design

CLC Number: