97380 20240209144726.0 doi 10.3390/catal10121482 sideral 121765 ART-2020-121765 eng Raso, R. (orcid)0000-0001-9626-3726 Study of ni/al-fe catalyst stability in the aqueous phase hydrogenolysis of glycerol 2020 Access copy available to the general public Unrestricted The present work studied the stability and reusability of Ni/Al-Fe catalyst in the aqueous phase hydrogenolysis of glycerol without external hydrogen addition. The catalyst based on 28 molar % of Ni with 3/1 molar ratio of Al/Fe was prepared through co-precipitation. This catalyst presented the best performance in our last study which compares several Ni/Al-Fe catalysts with different molar ratios of Al/Fe. To see the influence of the pressurized water on the physicochemical characteristics of Ni/Al-Fe catalyst, a test of up to 9 h has been carried out. Fresh and used catalysts were characterized by various techniques: X-ray Diffraction (XRD), N2-physisorption, field emission scanning electron microscopy (FESEM) and STEM. Glycerol conversion and carbon yield to gases and liquids did not vary significantly when compared at 3 h and 9 h. Furthermore, the morphology of the catalyst remains stable after continuous recycling under severe hydrothermal conditions. The nickel rich phase of the catalyst, which was determined by XRD and scanning transmission electron microscopy (STEM) techniques, showed a stable size after 9 h under reaction. info:eu-repo/grantAgreement/ES/AEI-FEDER/CTQ2017-86893-R info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-20R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.146 2020 CHEMISTRY, PHYSICAL 67 / 162 = 0.414 2020 Q2 T2 0.8 2020 Physical and Theoretical Chemistry 2020 Q2 Catalysis 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 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 10, 12 (2020), 1482 [1-12] Catalysts Catalysts 2073-4344 815676 http://zaguan.unizar.es/record/97380/files/texto_completo.pdf Versión publicada 2607945 http://zaguan.unizar.es/record/97380/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:97380 articulos driver 2024-02-09-14:45:12 ARTICLE