Insights into the Nature of the Active Sites of Pt-WOx/Al2O3 Catalysts for Glycerol Hydrogenolysis into 1,3-Propanediol
| Autor: | Iker Agirrezabal-Telleria, Mikel Oregui Bengoechea, Inaki Gandarias, Pedro-Luis Arias, Clara Jarauta-Córdoba |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_element
TP1-1185 glycerol Catalysis tungsten oxide Metal chemistry.chemical_compound Hydrogenolysis Pyridine Glycerol Organic chemistry platinum Physical and Theoretical Chemistry Bifunctional QD1-999 α ω-diols Chemical technology Brönsted acid Chemistry chemistry visual_art visual_art.visual_art_medium Brønsted–Lowry acid–base theory Platinum 1 3-propanediol |
| Zdroj: | Addi. Archivo Digital para la Docencia y la Investigación instname Catalysts, Vol 11, Iss 1171, p 1171 (2021) Catalysts Volume 11 Issue 10 Universidad de Cantabria (UC) Zaguán. Repositorio Digital de la Universidad de Zaragoza |
| Popis: | The chemo-selective hydrogenolysis of secondary hydroxyls is an important reaction for the production of biomass-derived α,ω-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/γ-Al2O3 catalysts were prepared by modifying the pH of the solutions used in the active metal impregnation step. The activity–structure relationships, 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. This work was supported by the University of the Basque Country (UPV/EHU), European Union, through the European Regional Development Fund (ERDF) (Spanish MICIN Project: RTI2018-094918-BC43), and the Basque Government (IT993-16). Clara Jarauta Cordoba acknowledges financial support from the Spanish Government (BES-2014-069165 and EEBB-I-18-13018). |
| Databáze: | OpenAIRE |
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