Electrochemical control of the conversion of cellulose oligosaccharides into glucose

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Abstract

This paper presents a novel method to convert cellulose oligosaccharides to glucose by using constant-potential electrolysis. Firstly experiments were performed to seek the optimum conditions and catalyst dosage to make the catalytic electrode, and it is found that the most active catalytic electrode (γ-MnO2/graphite/PTFE) can be made using 5% γ-MnO2 as catalysts which is prepared at calcinations temperature of 500°C and calcinations time of 3h. Following this, experiments were conducted to find the optimum operation conditions for the maximum glucose yield using the above-developed catalytic electrode. The results show that the maximum glucose yield of 72.4% can be achieved under the following operation conditions: electrolysis potential vs. SEC -1.0V, pH value of 3 and electrolytic reaction time of 8h. The cyclic voltammetry performance on MnO2/graphite/PTFE electrode suggests that γ-MnO2 acts not only as electrode material but also as a catalyst. The γ-MnO2 displays high electrocatalytic activity toward the breakage of β-1,4-glycoside bond of oligosaccharides and gives 100% selectivity to glucose. © 2013.

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Yang, F., Zhang, Q., Fan, H. X., Li, Y., & Li, G. (2014). Electrochemical control of the conversion of cellulose oligosaccharides into glucose. Journal of Industrial and Engineering Chemistry, 20(5), 3487–3492. https://doi.org/10.1016/j.jiec.2013.12.039

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