160886 20251017144556.0 doi 10.3390/catal15040348 sideral 144134 ART-2025-144134 eng Maldonado-Martín, Francisco Universidad de Zaragoza Selective Conversion of Glycerol to Acetol: Effect of the Preparation Method of CuAl Catalysts and Reaction Phase 2025 Access copy available to the general public Unrestricted A group of CuAl catalysts were synthesized with a Cu/Al molar ratio of 1:1 using different preparation methods: coprecipitation, surfactant assisted coprecipitation, polymeric precursor, and self-combustion and then screened for the selective dehydration of glycerol to acetol. The catalysts were employed in glycerol conversion at the same temperature (227 °C) in two different laboratory-scale systems, the first one at atmospheric pressure (gas phase) and the second one in a pressurized system at 34 absolute bar (liquid phase). The preparation method of the CuAl catalysts influenced the carbon yield to liquids and acetol selectivity. However, the reaction phase had a greater influence than the preparation method of the catalyst. In the gas phase, the carbon yield to liquids reached values above 40% and the carbon selectivity to acetol was higher than 90%. The highest acetol yield, 462.6 mgacetol/gglycerol, was obtained with the CuAl catalyst prepared by the surfactant-assisted coprecipitation method. This study provides a new perspective on catalyst design by highlighting the crucial role of preparation techniques in determining CuAl catalyst performance in the liquid and gas phases. info:eu-repo/grantAgreement/ES/DGA/T22-23R info:eu-repo/grantAgreement/ES/MCINN/PID2020-114985RB-I00 info:eu-repo/grantAgreement/ES/MICINN PRE2021-100578 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion García, Lucía Universidad de Zaragoza (orcid)0000-0001-7115-9025 Ruiz, Joaquín Universidad de Zaragoza (orcid)0000-0002-2924-3095 Oliva, Miriam Universidad de Zaragoza (orcid)0000-0002-7179-3031 Arauzo, Jesús Universidad de Zaragoza (orcid)0000-0002-5959-3168 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 5005 790 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Tecnologi. Medio Ambiente 15, 4 (2025), 348 [31 pp.] Catalysts Catalysts 2073-4344 10128873 http://zaguan.unizar.es/record/160886/files/texto_completo.pdf Versión publicada 2669404 http://zaguan.unizar.es/record/160886/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:160886 articulos driver 2025-10-17-14:13:14 ARTICLE