Study of glucose hydrogenolysis over Cu-oxides
| Autor: | E. M. Sharanda, V. V. Brei, S. V. Prudius, S. I. Levytska, A. M. Mylin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Copper oxide Aqueous solution 020209 energy 02 engineering and technology Surfaces and Interfaces 010502 geochemistry & geophysics 01 natural sciences Aldehyde Surfaces Coatings and Films Catalysis chemistry.chemical_compound Colloid and Surface Chemistry chemistry Pyranose Hydrogenolysis 0202 electrical engineering electronic engineering information engineering Materials Chemistry Ceramics and Composites Mixed oxide Physical and Theoretical Chemistry Ethylene glycol 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Himia, Fizika ta Tehnologia Poverhni. 9:134-144 |
| ISSN: | 2079-1704 |
| DOI: | 10.15407/hftp09.02.134 |
| Popis: | 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-ZrO 2 and Cu-СаО-Cr 2 О 3 /Аl 2 O 3 catalysts provide 65–66 % yield of C 2 -C 3 polyols at a 90 % glucose conversion at 180 °C. The maximum selectivity for propylene glycol (64 %) is achieved over Сu/MgO-ZrO 2 catalyst where copper is supported on high-basic (H − £+27.0) MgO-ZrO 2 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. |
| Databáze: | OpenAIRE |
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