title: Effects of metal ions on the hydrolysis of bamboo biomass in 1-butyl-3-methylimidazolium chloride with dilute acid as catalyst.
abstract: In this study, the effects of six metal ions including Na+, K+, Mg2+, Ca2+, Cu2+ and Fe3+ on hydrolysis of bamboo biomass by diluted hydrochloride acid (HCl) in ionic liquid [C4mim]Cl under mild conditions was investigated. These metal ions as co-catalysts exhibited significant effects on accelerating the hydrolysis process and improving the yield of total reducing sugar compared to single diluted hydrochloride acid hydrolysis in [C4mim]Cl at the same conditions. The most effective ion was Cu2+ and the total reducing sugar yield of 67.1% was achieved at 100 °C with CuCl2 as co-catalyst after 4-h reaction. The total reducing sugar yield was increased by about 7% and the reaction time was decreased by 3 h. The kinetic model was also investigated to give an insight into the mechanism of hydrolysis process.
authors.affiliation: Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
authors.forename: Nan
authors.initials: N
authors.lastname: Wang
authors.affiliation: Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
authors.forename: Honghui
authors.initials: H
authors.lastname: Wang
authors.affiliation: National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
authors.affiliation: Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
authors.forename: Sun'an
authors.initials: S
authors.lastname: Wei
authors.affiliation: Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China. Electronic address: dwang@cqu.edu.cn.
authors.forename: Dan
authors.initials: D
authors.lastname: Wang
mesh_terms: D002384:Catalysis; D006868:Hydrolysis; D007700:Kinetics; D008670:Metals / Q000737:chemistry*; D008956:Models, Chemical; D059205:Renewable Energy; D031787:Sasa / Q000737:chemistry*
chemical_list: D008670:Metals
keywords: Bamboo biomass; Dilute hydrochloride acid; Hydrolysis; Ionic liquids; Metal ions