Depolymerization of microcrystalline cellulose to value added chemicals using sulfate ion promoted zirconia catalyst

•Synergetic effect of [BMIM] Cl and SZ catalyst depolymerised MCC with 57% TRS yield.•Bifunctionality of SZ improved the depolymerization of MCC and dehydration of sugar.•Hydrolysis is influenced by temperature, time, catalyst loading and co-solvent type. The transformation of lignocellulosic biomas...

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Bibliographic Details
Published in:Bioresource technology 2016-11, Vol.220, p.394-400
Main Authors: Kassaye, Samuel, Pagar, Chetan, Pant, Kamal K., Jain, Sapna, Gupta, Rajat
Format: Article
Language:English
Subjects:
Biomass
Carbohydrates - chemistry
Catalysis
Cellulose - chemistry
Depolymerization
Ionic liquid
Ionic Liquids - chemistry
Levulinic Acids - chemistry
Microcrystalline cellulose
Polymerization
Spectroscopy, Fourier Transform Infrared
Sulfated zirconia
Sulfates - chemistry
Temperature
Waste Management - methods
X-Ray Diffraction
Zirconium - chemistry
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Summary:•Synergetic effect of [BMIM] Cl and SZ catalyst depolymerised MCC with 57% TRS yield.•Bifunctionality of SZ improved the depolymerization of MCC and dehydration of sugar.•Hydrolysis is influenced by temperature, time, catalyst loading and co-solvent type. The transformation of lignocellulosic biomass to value added chemicals in a synergetic effect of sulfated zirconia (SZ) catalyst and ionic liquid was found to effectively depolymerize microcrystalline cellulose (MCC) to sugars and dehydrate sugars to 5-hydroxylmethylfurfural (5-HMF) and levulinic acid (LA). SZ was catalyst synthesized by wet impregnation method with predetermined concentration of sulphuric acid and then characterized using techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), BET-surface area analyzer, thermo-gravimetric analysis (TGA) and temperature programmed desorption of ammonia (Ammonia-TPD). SZ catalyst was effective in depolymerizing MCC yielding a maximum of total reducing sugar (TRS) of 57% (38% glucose and 14% fructose), 9.5% LA and 5.1 of 5-HMF at a temperature of 180°C and 3h of depolymerization time. In addition, SZ was tested for dehydration of glucose and fructose and a yield of 26% and 62% of 5-HMF were obtained, respectively.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2016.08.109