Cellulose hydrolysis using zinc chloride as a solvent and catalyst

Journal Article · · Applied Biochemistry and Biotechnology; (United States)

DOI:https://doi.org/10.1007/BF02941827· OSTI ID:6929373

Cao, N J; Xu, Q; Chen, C S; Gong, C S; Chen, L F ^[1]

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1. Purdue Univ., West Lafayette, IN (United States)

Cellulose gel with <10% of crystallinity was prepared by treatment of microcrystalline cellulose, Avicel, with zinc chloride solution at a ratio of zinc chloride to cellulose from 1.5 to 18 (w/w). The presence of zinc ions in the cellulose gels enhanced the rate of hydrolysis and glucose yield. The evidence obtained from X-ray diffraction, iodine absorption experiments, and Nuclear Magnetic Resonance spectra analysis suggested the presence of zinc-cellulose complex after Avicel was treated with zinc chloride. Zinc-cellulose complex was more susceptible to hydrolysis than amorphous cellulose. Under the experimental conditions, cellulose gels with zinc ions were hydrolyzed to glucose with 95% theoretical yield and a concentration of 14% (w/v) by cellulases within 20 h. The same gel was hydrolyzed by acid to glucose with 91.5% yield and a concentration of 13.4% (w/v). 10 refs., 6 figs., 2 tabs.

• OSTI ID: 6929373
• Journal Information: Applied Biochemistry and Biotechnology; (United States), Journal Name: Applied Biochemistry and Biotechnology; (United States) Vol. 45-46; ISSN ABIBDL; ISSN 0273-2289
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090900* -- Biomass Fuels-- Processing-- (1990-)
ACID HYDROLYSIS
CARBOHYDRATES
CATALYTIC EFFECTS
CELLULOSE
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
ENZYMATIC HYDROLYSIS
HYDROLYSIS
LYSIS
METALS
ORGANIC COMPOUNDS
POLYSACCHARIDES
SACCHARIDES
SOLVOLYSIS
ZINC