摘要
The production of chemicals or fuels from renewable biomass resources especially cellulose has attracted much attention because of the worldwide demand for less dependence on fossil resources.However,the direct utilization of cellulose is still a challenge because of its robust crystalline structure.Herein,the hydrogenation of cellobiose,a typical cellulose,over carbon nanotube supported ruthenium catalyst (Ru/CNT) was reported.The mechanism of cellobiose conversion was proposed and the kinetic equation was obtained.Based on the kinetic experiments carried out in the range 120—185℃ under 5.0 MPa H2,the reaction rate constants and activation energies of each reaction step in cellobiose hydrogenation were obtained with MATLAB,in which the activation energy for hydrolysis and hydrogenolysis of cellobiose was estimated as 147.1 kJ·mol-1 and 71.2 kJ·mol-1,respectively.The obtained kinetic model and some general rules on the catalytic hydrogenation of cellobiose may provide important data for efficient utilization of cellulose.
The production of chemicals or fuels from renewable biomass resources especially cellulose has attracted much attention because of the worldwide demand for less dependence on fossil resources.However,the direct utilization of cellulose is still a challenge because of its robust crystalline structure.Herein,the hydrogenation of cellobiose,a typical cellulose,over carbon nanotube supported ruthenium catalyst （Ru/CNT） was reported.The mechanism of cellobiose conversion was proposed and the kinetic equation was obtained.Based on the kinetic experiments carried out in the range 120—185℃ under 5.0 MPa H2,the reaction rate constants and activation energies of each reaction step in cellobiose hydrogenation were obtained with MATLAB,in which the activation energy for hydrolysis and hydrogenolysis of cellobiose was estimated as 147.1 kJ·mol-1 and 71.2 kJ·mol-1,respectively.The obtained kinetic model and some general rules on the catalytic hydrogenation of cellobiose may provide important data for efficient utilization of cellulose.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2010年第10期2579-2584,共6页
CIESC Journal
基金
国家自然科学基金项目(20625310, 20773099,20873110)~~
