The enhancement of the hydrolysis of bamboo biomass in ionic liquid with chitosan-based solid acid catalysts immobilized with metal ions.
Three kinds of sulfonated cross-linked chitosan (SCCR) immobilized with metal ions of Cu(2+), Fe(3+) and Zn(2+) individually were synthesized and firstly used as solid acid catalysts in the hydrolysis of bamboo biomass. FTIR spectra showed that metal ions had been introduced into SCCR and the N-metal ions coordinate bound was formed. The particle sizes of these catalysts were about 500-1000μm with a pore size of 50-160μm. All of the three kinds of catalysts performed well for bamboo hydrolysis with 1-butyl-3-methyl-imidazolium chloride used as solvent. The most effective one was sulfonated cross-linked chitosan immobilized with Fe(3+) (Fe(3+)-SCCR). TRS yields were up to 73.42% for hydrolysis of bamboo powder in [C4mim]Cl with Fe(3+)-SCCR at 120°C and 20RPM after 24h. These novel chitosan-based metal ions immobilized solid acid catalysts with ionic liquids as the solvent might be promising to facilitate cost-efficient conversion of biomass into biofuels and bioproducts.
Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, PR China.
Jie
J
Cheng
Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, KS 66045, United States.
Nan
N
Wang
Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, PR China.
Dezhou
D
Zhao
Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, PR China.
Dandan
D
Qin
Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, PR China.
Wenqing
W
Si
Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, PR China.
Yunfei
Y
Tan
Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, PR China.
Shun'an
S
Wei
Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, PR China. Electronic address: dwang@cqu.edu.cn.
Dan
D
Wang
D000143:Acids / Q000737:chemistry; D056804:Biofuels; D018533:Biomass; D002384:Catalysis; D048271:Chitosan / Q000737:chemistry*; D006868:Hydrolysis; D007093:Imidazoles / Q000737:chemistry; D052578:Ionic Liquids / Q000737:chemistry; D008670:Metals / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D031787:Sasa / Q000737:chemistry* / Q000648:ultrastructure; D012997:Solvents / Q000737:chemistry
D000143:Acids; D056804:Biofuels; D007093:Imidazoles; D052578:Ionic Liquids; D008670:Metals; D012997:Solvents; C502841:1-butyl-3-methylimidazolium chloride; D048271:Chitosan
Biomass hydrolysis; Chitosan; Ionic liquids; Metal ions; Solid acid catalyst