Journal
REACTION KINETICS MECHANISMS AND CATALYSIS
Volume 121, Issue 1, Pages 329-343Publisher
SPRINGER
DOI: 10.1007/s11144-017-1154-6
Keywords
Glycerol; Hydrogenolysis of glycerol; Cu/Al2O3; Cu/TiO2; Reaction conditions
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Funding
- Foundation for Polish Science [POMOST/2011-3/7]
- Marian Smoluchowski Krakow Research Consortium - a Leading National Research Centre KNOW - Ministry of Science and Higher Education
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The syntheses, physicochemical properties and catalytic activity of Cu-containing catalysts in the hydrogenolysis of glycerol are reported in the present paper. The investigated catalysts contained various amounts of Cu deposited by wet impregnation over two oxide supports: Al2O3 and TiO2. The catalysts were characterized by the following techniques: XRD, H-2-TPR, BET/BJH and N2O adsorption. The catalytic activity of the prepared catalysts was studied in the selective hydrogenolysis of glycerol to 1,2-propanediol in order to understand the role of the support as well as to select the most active and selective catalyst. The influence of the following parameters was carefully studied: pre-reduction temperature, hydrogen pressure during pre-reduction and hydrogenolysis and reaction time. In addition, the influence of tungstophosphoric acid and sodium hydroxide additives was also studied. The best catalytic systems were identified in terms of glycerol conversion and 1,2-propanediol selectivity.
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