A study of glycerol hydrogenolysis over Ru–Cu/Al2O3 and Ru–Cu/ZrO2 catalysts

[Display omitted] •Ru–Cu/Al2O3 and Ru–Cu/ZrO2 have been investigated in glycerol hydrogenolysis.•Ru–Cu/ZrO2 displayed higher turnover frequencies.•Ru–Cu/ZrO2 was more selective for 1,2 propanediol.•Optimum Ru/Cu ratio was obtained. This work focuses on the activity, selectivity, and characterization...

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Published in:Journal of molecular catalysis. A, Chemical Chemical, 2016-05, Vol.415, p.27-36
Main Authors: Soares, André V.H., Salazar, Joyce B., Falcone, Derek D., Vasconcellos, Fernanda A., Davis, Robert J., Passos, Fabio B.
Format: Article
Language:English
Subjects:
Copper
Glycerol hydrogenolysis
Propylene glycol
Ruthenium
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Summary:[Display omitted] •Ru–Cu/Al2O3 and Ru–Cu/ZrO2 have been investigated in glycerol hydrogenolysis.•Ru–Cu/ZrO2 displayed higher turnover frequencies.•Ru–Cu/ZrO2 was more selective for 1,2 propanediol.•Optimum Ru/Cu ratio was obtained. This work focuses on the activity, selectivity, and characterization of alumina and zirconia supported Ru(2.5% wt.)–Cu(2.5% wt.) bimetallic catalysts to produce 1,2-propanediol (1,2-PDO) from glycerol hydrogenolysis. Characterization techniques included XRD, BET, TEM, H2 chemisorption, TPR and DRIFTS. Turnover frequencies were obtained for batch reactions ran at different temperatures. At 473K and 2.5MPa of dihydrogen, a conversion of 45% of glycerol with 94% selectivity toward 1,2-PDO was found when the Ru(2.5% wt.)–Cu(2.5% wt.)/Al2O3 was used. Recycle experiments were done for the monometallic catalysts, in which Ru/Al2O3 showed a better performance.
ISSN:1381-1169
1873-314X
DOI:10.1016/j.molcata.2016.01.027