144995 20260112133340.0 doi 10.3303/CET24109023 sideral 139819 ART-2024-139819 eng Lete, A. Universidad de Zaragoza (orcid)0000-0002-2866-9035 Catalytic conversion of 1,2-propanediol to 2-propanone: an exploratory study 2024 Access copy available to the general public Unrestricted Climate change underscores the urgency of exploring novel pathways for the decarbonization of the transportation sector. Within the aviation sector, biofuel appears to be the most viable short-term solution. Recently, the focus has centered on the aldol condensation of biomass-derived furans with ketones as 2-propanone (acetone) or 2-hydroxy-2-propanone (acetol), offering an efficient method to produce intermediates suitable for aviation fuels. However, 2-propanone is currently produced from cumene, a petroleum-derived source. This study proposes 1,2-propanediol (1,2-PDO), a sustainable product obtained by the hydrogenolysis of glycerol, a byproduct of the biodiesel industry, as a renewable feedstock for the generation of 2-propanone. For that purpose, the coprecipitation method with sodium hydroxide was employed to synthesize three copper, zinc, and aluminum-based catalysts. The catalysts were characterized through ICP-OES, N2 adsorption-desorption, XRD, and H2-TPR. The dehydration of 1,2-PDO to 2-propanone was investigated in a continuous system at 227 ºC, using a 10 wt% aqueous solution of 1,2-PDO at atmospheric pressure with a W/m ratio of 10 gCatalyst min g1,2-PDO-1. The catalyst with the lower zinc content achieved the highest carbon selectivity to 2-propanone at 22.1% and generated 1845 µmol2-propanone/mol1,2-PDO. This study revealed that lower zinc content could enhance 1,2-PDO dehydration to 2-propanone, preventing the subsequent hydrogenation of 2-propanone to 2-propanol. Additional optimization is required to attain higher yields. info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-23R info:eu-repo/grantAgreement/ES/MCINN/PID2020-114985RB-I00 info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es 0.257 2024 Chemical Engineering (miscellaneous) 2024 Q3 1.6 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion García, L. Universidad de Zaragoza (orcid)0000-0001-7115-9025 Ruiz, Joaquín Universidad de Zaragoza (orcid)0000-0002-2924-3095 Arauzo, Jesús Universidad de Zaragoza (orcid)0000-0002-5959-3168 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 109 (2024), 133-138 Chem. eng. trans. Chemical Engineering transactions 1974-9791 1414732 http://zaguan.unizar.es/record/144995/files/texto_completo.pdf Versión publicada 2656541 http://zaguan.unizar.es/record/144995/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:144995 articulos driver 2026-01-12-13:14:03 ARTICLE