Study of ni/al-fe catalyst stability in the aqueous phase hydrogenolysis of glycerol

Raso, R. ; García, L. (Universidad de Zaragoza) ; Ruiz, J. (Universidad de Zaragoza) ; Oliva, M. (Universidad de Zaragoza) ; Arauzo, J. (Universidad de Zaragoza)

Resumen: 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.

Idioma: Inglés

DOI: 10.3390/catal10121482

Año: 2020

Publicado en: Catalysts 10, 12 (2020), 1482 [1-12]
ISSN: 2073-4344

Factor impacto JCR: 4.146 (2020)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 67 / 162 = 0.414 (2020) - Q2 - T2

Factor impacto SCIMAGO: 0.8 - Physical and Theoretical Chemistry (Q2) - Catalysis (Q2)

Financiación: info:eu-repo/grantAgreement/ES/AEI-FEDER/CTQ2017-86893-R
Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón
Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-20R

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
Área (Departamento): Área Tecnologi. Medio Ambiente (Dpto. Ing.Quím.Tecnol.Med.Amb.)