Abstract
BACKGROUND: The selective conversion of cellulose to gluconic acid under mild conditions is challenging as it has abundant intra-and inter-molecular hydrogen bonds that protect the β-1,4-glycosidic bonds and make it intrinsically recalcitrant to depolymerize.
RESULTS: Au-Pd/TiO2and Au-Pt/TiO2catalysts prepared by sol immobilization method without pre-treatment are active and selective for the oxidation of glucose and cellobiose to gluconic acid under base-free conditions. Important preparation parameters are the pre-treatment of the catalyst and the metal ratio.
CONCLUSION: The optimized catalyst provided a good yield of gluconic acid from cellobiose and has opened up a new catalyst system for cellobiose conversion in terms of a heterogeneous catalyst.
RESULTS: Au-Pd/TiO2and Au-Pt/TiO2catalysts prepared by sol immobilization method without pre-treatment are active and selective for the oxidation of glucose and cellobiose to gluconic acid under base-free conditions. Important preparation parameters are the pre-treatment of the catalyst and the metal ratio.
CONCLUSION: The optimized catalyst provided a good yield of gluconic acid from cellobiose and has opened up a new catalyst system for cellobiose conversion in terms of a heterogeneous catalyst.
Original language | English |
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Pages (from-to) | 2246-2253 |
Number of pages | 8 |
Journal | Journal of Chemical Technology and Biotechnology |
Volume | 92 |
Issue number | 9 |
Early online date | 23 Mar 2017 |
DOIs | |
Publication status | Published - 1 Sep 2017 |
Keywords
- Au-Pd
- Au-Pt
- base-free condition
- cellobiose
- gluconic acid
- glucose
- oxidation