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Microwave aided conversion of cellulose to glucose using polyoxometalate as catalyst
Manami Nakamura1, Md Saidul Islam1,2, Mohammad Atiqur Rahman1
1Department of Chemistry, Graduate School of Science and Technology, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan hayami@kumamoto-u.ac.jp.
RSC Advances
|May 2, 2022
Summary
This study shows microwave-assisted cellulose hydrolysis using polyoxometalate (POM) catalysts. Keggin-type POMs achieved high glucose yields (77.2%) and cellulose conversion (90.1%) under optimized conditions.
Area of Science:
- Biorefining and Biomass Conversion
- Catalysis
- Green Chemistry
Background:
- Biorefining efficiency relies on effective cellulose conversion.
- Polyoxometalate (POM) clusters show potential as acid catalysts for biomass conversion.
- Systematic optimization studies for POM-catalyzed cellulose hydrolysis are lacking.
Purpose of the Study:
- To investigate microwave-assisted cellulose hydrolysis to glucose using Wells-Dawson and Keggin-type POM catalysts.
- To compare the catalytic efficiency of different POM types.
- To optimize reaction conditions for maximizing glucose yield and cellulose conversion.
Main Methods:
- Microwave-assisted hydrolysis of cellulose using Wells-Dawson and Keggin-type POMs.
- Screening of POM catalysts and optimization of reaction parameters (catalyst amount, temperature, time, solvent).
- Analysis of cellulose conversion and glucose yield.
Main Results:
- Keggin-type POMs demonstrated higher cellulose conversion and glucose yield compared to Wells-Dawson-type POMs.
- Optimized reaction conditions led to a 77.2% glucose yield and 90.1% cellulose conversion with Keggin-type POMs.
- POM catalysts exhibit strong acidity and efficient microwave absorption, contributing to high catalytic efficacy.
Conclusions:
- Microwave-assisted hydrolysis using Keggin-type POMs is an effective method for cellulose conversion to glucose.
- Optimization of reaction conditions significantly enhances conversion efficiency.
- POMs offer a promising catalytic system for sustainable biorefining.
