INVESTIGADORES
DE MIGUEL sergio Ruben
artículos
Título:
Study of the performance and stability in the dry reforming of methane of doped alumina supported iridium catalysts
Autor/es:
SILVIA C.P. MAINA; ADRIANA D. BALLARINI; JULIETA I. VILELLA; SERGIO R. DE MIGUEL
Revista:
CATALYSIS TODAY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2018 vol. 344 p. 129 - 142
ISSN:
0920-5861
Resumen:
Iridium catalysts supported on alumina doped with both alkaline (Na and K) and alkalineearth metals (Ba, Ca and Mg) of different concentrations (1, 5 and 10wt%) were testedin the dry reforming of methane. Supports were characterized by X-ray diffraction, BETsurface area, temperature-programmed desorption of CO2 and 2-propanol dehydration.Catalysts were characterized by temperature-programmed reduction, TEM, XPS,cyclohexane dehydrogenation and cyclopentane hydrogenolysis. Dopants were showedto suppress the acidity of the support and the γ-Al2O3 phase remained in the supportsdoped with Ca, Ba, Na and K after calcination at 800°C, whereas a phase transition tomagnesium aluminate was found for magnesium doped alumina.Stability tests, using long time dry reforming reactions, showed that iridium catalystshave high sintering resistance, their metallic phases being very stable since neithercarbon deposition nor sinterization processes were observed.
