151454 20251017144613.0 doi 10.1016/j.biombioe.2025.107744 sideral 143144 ART-2025-143144 eng Raso, R. (orcid)0000-0001-9626-3726 Aqueous phase hydrogenolysis of glycerol with in-situ hydrogen generation over Ni catalysts supported on activated carbon: Effects of nickel loading and base addition 2025 Access copy available to the general public Unrestricted The present work studied the influences of nickel loading and KOH addition on the aqueous phase hydrogenolysis of glycerol over nickel supported on activated carbon (Ni/AC) catalysts prepared by the incipient wetness impregnation method and without external hydrogen addition in a continuous operation. It has been observed that the calcination stage of the catalytic precursor reduces nickel oxide to dispersed nickel metal crystallites, making catalyst activation with hydrogen unnecessary. This process predominantly yields liquid products, with low gas production under the studied conditions. Among the produced liquids, acetol and 1,2-propanediol are the major components. Furthermore, the addition of a base (KOH) is beneficial both in terms of significantly increasing glycerol conversion and the yield to liquids and also to improve selectivity towards 1,2-propanediol due to the participation of the basic route. The best catalytic activity was achieved using the catalyst with 10 wt% of Ni and added base with the highest glycerol conversion close to 40 % and selectivity to 1,2-propanediol greater than 70 %. info:eu-repo/grantAgreement/ES/DGA/T22-23R info:eu-repo/grantAgreement/ES/MCINN/PID2020-114985RB-I00 info:eu-repo/semantics/embargoedAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion García, L. Universidad de Zaragoza (orcid)0000-0001-7115-9025 Ruiz, J. Universidad de Zaragoza (orcid)0000-0002-2924-3095 Oliva, M. Universidad de Zaragoza (orcid)0000-0002-7179-3031 Arauzo, J. 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 196 (2025), 107744 [10 pp.] Biomass bioenergy BIOMASS & BIOENERGY 0961-9534 3004179 http://zaguan.unizar.es/record/151454/files/texto_completo.pdf Postprint info:eu-repo/date/embargoEnd/2027-02-26 1389228 http://zaguan.unizar.es/record/151454/files/texto_completo.jpg?subformat=icon icon Postprint info:eu-repo/date/embargoEnd/2027-02-26 oai:zaguan.unizar.es:151454 articulos driver 2025-10-17-14:18:09 ARTICLE