129902 20241125101147.0 doi 10.3390/molecules28186695 sideral 136215 ART-2023-136215 eng Raso, Raquel (orcid)0000-0001-9626-3726 Renewable hydrogen production by aqueous phase reforming of pure/refined crude glycerol over Ni/Al-Ca catalysts 2023 Access copy available to the general public Unrestricted Renewable hydrogen production by aqueous phase reforming (APR) over Ni/Al-Ca catalysts was studied using pure or refined crude glycerol as feedstock. The APR was carried out in a fixed bed reactor at 238 °C, 37 absolute bar for 3 h, using a solution of 5 wt.% of glycerol, obtaining gas and liquid products. The catalysts were prepared by the co-precipitation method, calcined at different temperatures, and characterized before and after their use by several techniques (XRD, ICP-OES, H2-TPR, NH3-TPD, CO2-TPD, FESEM, and N2-physisorption). Increasing the calcination temperature and adding Ca decreased the surface area from 256 to 188 m2/g, and its value after the APR changed depending on the feedstock used. The properties of the acid and basic sites of the catalysts influenced the H2 yield also depending on the feed used. The Ni crystallite was between 6 and 20 nm. In general, the incorporation of Ca into Ni-based catalysts and the increase of the calcination temperature improved H2 production, obtaining 188 mg H2/mol C fed during the APR of refined crude glycerol over Ni/AlCa-675 catalyst, which was calcined at 675 °C. This is a promising result from the point of view of enhancing the economic viability of biodiesel. info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-23R info:eu-repo/grantAgreement/ES/MCINN/PID2020-114985RB-I00 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.2 2023 CHEMISTRY, MULTIDISCIPLINARY 77 / 231 = 0.333 2023 Q2 T2 BIOCHEMISTRY & MOLECULAR BIOLOGY 88 / 313 = 0.281 2023 Q2 T1 0.744 2023 Analytical Chemistry 2023 Q1 Pharmaceutical Science 2023 Q1 Chemistry (miscellaneous) 2023 Q1 Organic Chemistry 2023 Q2 Physical and Theoretical Chemistry 2023 Q2 Drug Discovery 2023 Q2 Medicine (miscellaneous) 2023 Q2 Molecular Medicine 2023 Q3 7.4 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Abad, Eduardo 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 28, 18 (2023), 6695 [22 pp.] Molecules (Basel, Online) Molecules 1420-3049 3128828 http://zaguan.unizar.es/record/129902/files/texto_completo.pdf Versión publicada 2787303 http://zaguan.unizar.es/record/129902/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:129902 articulos driver 2024-11-22-12:05:03 ARTICLE