Insights into the nature of the active sites of pt-wox/al2o3 catalysts for glycerol hydrogenolysis into 1, 3-propanediol

Jarauta-Córdoba C. ; Bengoechea M.O. ; Agirrezabal-Telleria I. ; Arias P.-L. ; Gandarias I.

Resumen: The chemo-selective hydrogenolysis of secondary hydroxyls is an important reaction for the production of biomass-derived a, ¿-diols. This is the case for 1, 3-propanediol production from glycerol. Supported Pt-WOx materials are effective catalysts for this transformation, and their activity is often related to the tungsten surface density and Brönsted acidity, although there are discrepancies in this regard. In this work, a series of Pt-WOx/¿-Al2O3 catalysts were prepared by modifying the pH of the solutions used in the active metal impregnation step. The activity–structure relation-ships, together with the results from the addition of in situ titrants, i.e., 2, 6-di-tert-butyl-pyridine or pyridine, helped in elucidating the nature of the bifunctional active sites for the selective production of 1, 3-propanediol. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Idioma: Inglés

DOI: 10.3390/catal11101171

Año: 2021

Publicado en: Catalysts 11, 10 (2021), 1171 [16 pp]
ISSN: 2073-4344

Factor impacto JCR: 4.501 (2021)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 71 / 165 = 0.43 (2021) - Q2 - T2

Factor impacto CITESCORE: 5.5 - Environmental Science (Q1) - Chemical Engineering (Q2)

Factor impacto SCIMAGO: 0.728 - Physical and Theoretical Chemistry (Q2) - Catalysis (Q2)

Tipo y forma: Article (Published version)