title: Selective conversion of cotton cellulose to glucose and 5-hydroxymethyl furfural with SO4(2-)/MxOy solid superacid catalyst.
abstract: This paper presented a mild hydrothermal process for degradation of cotton cellulose with solid superacid catalyst and selective conversion of cotton cellulose to glucose and 5-hydroxymethyl furfural (HMF). Five kinds of solid superacid catalyst such as SO4(2-)/SnO2, SO4(2-)/TiO2, SO4(2-)/ZrO2, SO4(2-)/Fe2O3 and SO4(2-)/Al2O3 were prepared by impregnation method. The BET surface area of catalyst SO4(2-)/SnO2 was up to 118.8m(2)g(-1) when impregnation was performed with 1molL(-1) H2SO4 of impregnating solution at 550°C calcination temperature for 3h. It made the hydrothermal temperature of cellulose degradation decrease to 190°C successfully and suppressed the side reaction. The NH3-TPD profile of SO4(2-)/SnO2 indicated there was a wide region of stronger acid sites on the catalyst surface. The depolymerization of cotton cellulose obtained 11.0% yield and 22.0% selectivity of HMF and 26.8% yield and 53.4% selectivity of glucose, respectively. The regeneration and reuse of solid superacid catalyst were also discussed in this paper.
authors.affiliation: Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China. Electronic address: yangfang@hebut.edu.cn.
authors.forename: Fang
authors.initials: F
authors.lastname: Yang
authors.affiliation: Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.affiliation: Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Sun
authors.affiliation: Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
authors.forename: Hongxian
authors.initials: H
authors.lastname: Fan
authors.affiliation: Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
authors.forename: Nian
authors.initials: N
authors.lastname: Xu
authors.affiliation: Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China. Electronic address: ligang@hebut.edu.cn.
authors.forename: Gang
authors.initials: G
authors.lastname: Li
mesh_terms: D000143:Acids / Q000737:chemistry*; D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D005662:Furaldehyde / Q000031:analogs & derivatives* / Q000737:chemistry; D005947:Glucose / Q000737:chemistry*; D003368:Gossypium / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013431:Sulfates / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D017971:Tin Compounds / Q000737:chemistry; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D000143:Acids; D013431:Sulfates; D017971:Tin Compounds; D014867:Water; C008046:5-hydroxymethylfurfural; D002482:Cellulose; D005662:Furaldehyde; D005947:Glucose; C045358:stannic oxide
keywords: Cellulose; Glucose; HMF; SO(4)(2−)/SnO(2); Solid super acid