Study of glucose hydrogenolysis over Cu-oxides

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Study of glucose hydrogenolysis over Cu-oxides

Journal Title: Хімія, фізика та технологія поверхні - Year 2018, Vol 9, Issue 2

Abstract

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.

Authors and Affiliations

E. M. Sharanda, S. I. Levytska, S. V. Prudius, A. M. Mylin, V. V. Brei

Keywords

glucose. hydrogenolysis. Cu-oxide catalysts. propylene glycol. ethylene glycol

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EP ID EP460391
DOI 10.15407/hftp09.02.134
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