【摘 要】
：
Extremely low phosphotungstic acid combined with precious-metal catalyst(Ru/C or Pt/C or Pd/C)was used for one-pot conversion of cellobiose and cellulose into polyols in presence of hydrogen.High yiel
【机 构】
：
State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,51
【出 处】
：
The 4th International Conference on Biomass Energy Technolog
论文部分内容阅读
Extremely low phosphotungstic acid combined with precious-metal catalyst(Ru/C or Pt/C or Pd/C)was used for one-pot conversion of cellobiose and cellulose into polyols in presence of hydrogen.High yields of ethylene glycol(EG)and 1,2-propylene glycol(1,2-PG)were obtained over extremely low phosphotungstic acid combined with Ru/C catalyst,and Ru/C could be used many times without remarkable decrease of EG and 1,2-PG yields.Besides,the effect of reaction conditions such as reaction time,H2 pressure,etc on the conversion of cellobiose and the yield of polyols were studied in detail.The highest EG yield of 36.1%was attained at 503K and 5 Mpa H2 for 1h with Ru/C usage of 0.1 g in 0.02wt%phosphotungstic acid from cellobiose conversion.However,cellulose cannot be completely catalyzed conversion duo to its robust crystalline structure and insolubility in extremely low phosphotungstic acid.
其他文献
The phylogenic and genetic relationships in Cornus were studied at molecular levels,for providing new molecular evidences of classification and genetic information for the future breeding program of C
In recent years,more and more attention has been paid to the hydrothermal carbonization(HTC)of biomass,due to the rising energy crisis combined with growing environment concerns.Hydrochar is a solid r
Bio-oil,produced from the fast pyrolysis of biomass,contains a wide variety of functional groups and molecular weights including acids,aldehydes,ketones,sugars,phenols,and lignin-derived oligomers,etc
This paper discusses the main achievements of germplasm collection,innovation and application of female lines in recent years in China,introduces castor germplasm innovation by recurrent selection,rad
Physicochemical characterization of bio-oil is unstable during the storage.Therefore it is necessary to find a stabilization strategy to retard the aging rate of bio-oil.The purpose of this paper is t
Sugar platform construction is one of the key technologies of lignocellulosic bio-ethanol.Because of its complicated structure,enzymatic saccharification method after pretreatment is considered to be
In this study,laboratory scale pyrolysis and steam gasification experiments with direct causticization using TiO2 for wheat straw alkaline black liquor were performed in a thermo gravimetric analyzer
This paper we take eight water oxygen zirconium chloride as the source of zirconium and polyethylene glycol 20000 as the template agent to acquire WO3/ZrO2,SO4 2-/ZrO2,MoO3/ZrO2,B2O3/ZrO2 and a series
Highly ordered mesoporous CeO2-TiO2-ZrO2 was prepared by using Pluronic F127 as the template from the evaporation-induced self assembly(EISA).SO4 2-/CeO2-TiO2-ZrO2 solid acid catalyst was obtained by
In recent years,due to the worlds energy demand and with the uncertainty in the supply,ever increasing prices of fossil fuels,causing increased environmental pollution,it has become imperative to scou