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Two-stage Conversion of Glycerol into Propylene Glycol over Cu/Al2O3 Catalyst

Mykhailo Sharanda, Vladyslav Sontsev, Evgeniya Bondarenko and Volodymyr Brei
Affiliation: 
Institute of Sorption and Problems of Endoecology of the National Academy of Sciences, 13 General Naumov str., 03164 Kyiv, Ukraine; brei@ukr.net
DOI: 
https://doi.org/10.23939/chcht09.02.171
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Keywords:

Abstract: 
The conversion of 30 % glycerol mixture in ethanol over Cu/Al2O3 catalyst at 493 K/0.1MPa was studied under Ar-H2 flow with different H2 content. It was shown, that 84 % selectivity towards hydroxyacetone is achieved at using 2.5 % H2 concentration in a carrier gas. Then the product obtained at 493 K has been hydrogenated into a propylene glycol at 448 K in pure H2 flow under 1.2 MPa. 89 % selectivity towards propylene glycol was achieved at moderate consumption of hydrogen H2/C3H6O2 = 4 (mol). Two-stage conversion of glycerol into the propylene glycol at different pressure is proposed.
References: 

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