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Article

VAlPOs as Efficient Catalysts for Glycerol Conversion to Methanol

1
Department of Organic Chemistry, University of Bucharest, Biochemistry & Catalysis, Faculty of Chemistry, 4-12, Blv. Regina Elisabeta, 030018 Bucharest, Romania
2
National Institute of Material Physics, 405A Atomiştilor, P.O. Box MG 7, 077125 Măgurele, Romania
*
Authors to whom correspondence should be addressed.
Authors with equal contribution.
Catalysts 2020, 10(7), 728; https://doi.org/10.3390/catal10070728
Received: 24 April 2020 / Revised: 23 June 2020 / Accepted: 28 June 2020 / Published: 1 July 2020
(This article belongs to the Special Issue New Glycerol Upgrading Processes)
The catalytic activity of a series of vanadium aluminophosphates catalysts prepared by sol-gel method followed by combustion of the obtained gel was evaluated in glycerol conversion towards methanol. The materials were characterized by several techniques such as X-ray diffraction (XRD), UV-vis, Fourier-transform infrared (FTIR), Raman and X-ray photoelectron (XPS) spectroscopies. The amount of vanadium incorporated in aluminophosphates framework played an important role in the catalytic activity, while in the products distribution the key role is played by the vanadium oxidation state on the surface. The sample that contains a large amount of V4+ has the highest selectivity towards methanol. On the sample with the lowest vanadium loading the oxidation path to dihydroxyacetone is predominant. The catalyst with higher content of tetrahedral isolated vanadium species, such V5APO, is less active in breaking the C–C bonds in the glycerol molecule than the one containing polymeric species. View Full-Text
Keywords: vanadium aluminophosphates; glycerol oxidation; glycerol dehydration; methanol synthesis; dihydroxyacetone; acetaldehyde vanadium aluminophosphates; glycerol oxidation; glycerol dehydration; methanol synthesis; dihydroxyacetone; acetaldehyde
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MDPI and ACS Style

Mitran, G.; Neațu, F.; Neațu, Ș.; Trandafir, M.M.; Florea, M. VAlPOs as Efficient Catalysts for Glycerol Conversion to Methanol. Catalysts 2020, 10, 728. https://doi.org/10.3390/catal10070728

AMA Style

Mitran G, Neațu F, Neațu Ș, Trandafir MM, Florea M. VAlPOs as Efficient Catalysts for Glycerol Conversion to Methanol. Catalysts. 2020; 10(7):728. https://doi.org/10.3390/catal10070728

Chicago/Turabian Style

Mitran, Gheorghița, Florentina Neațu, Ștefan Neațu, Mihaela M. Trandafir, and Mihaela Florea. 2020. "VAlPOs as Efficient Catalysts for Glycerol Conversion to Methanol" Catalysts 10, no. 7: 728. https://doi.org/10.3390/catal10070728

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