Дослідження гідрогенолізу глюкози на Cu-оксидах
The investigation deals with search of effective catalysts of propylene glycol obtaining from glucose as renewable raw material. The hydrogenolysis of 20 % aqueous glucose solution in a flow reactor over copper oxide catalysts at 120–220 °C and 4.0 MPa has been studied. It has been found that Сu/MgO...
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| Date: | 2018 |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2018
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| Subjects: | |
| Online Access: | https://www.cpts.com.ua/index.php/cpts/article/view/460 |
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| Journal Title: | Chemistry, Physics and Technology of Surface |
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Chemistry, Physics and Technology of Surface| Summary: | The investigation deals with search of effective catalysts of propylene glycol obtaining from glucose as renewable raw material. The hydrogenolysis of 20 % aqueous glucose solution in a flow reactor over copper oxide catalysts at 120–220 °C and 4.0 MPa has been studied. It has been found that Сu/MgO-ZrO2 and Cu-СаО-Cr2О3/Аl2O3 catalysts provide 65–66 % yield of C2-C3 polyols at a 90 % glucose conversion at 180 °C. The maximum selectivity for propylene glycol (64 %) is achieved over Сu/MgO-ZrO2 catalyst where copper is supported on high-basic (H??+27.0) MgO-ZrO2 mixed oxide. The scheme of glucose hydrogenolysis is discussed: the opening of pyranose ring – isomerization of fructose - C3-C4 decondensation – glycerol dehydration – hydrogenation of pyruvic aldehyde to propylene glycol. |
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