RT journal article
T1 Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol
A1 Goma Jiménez, Daniel
A1 Delgado Jaén, Juan José
A1 Lefferts, Leon
A1 Faria, Jimmy
A1 Calvino Gámez, José Juan
A1 Cauqui López, Miguel Ángel
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 aqueous-phase reforming
K1 nickel
K1 ceria
K1 zirconi
K1 calcium
K1 yttrium
K1 methanol
AB In this study, we reported on the effect of promoting Ni/ZrO2 catalysts with Ce, Ca (two different loadings), and Y for the aqueous-phase reforming (APR) of methanol. We mainly focused on the effect of the redox properties of ceria and the basicity provided by calcium or yttrium on the activity and selectivity of Ni in this reaction. A systematic characterization of the catalysts was performed using complementary methods such as XRD, XPS, TPR, CO2-TPD, H-2 chemisorption, HAADF-STEM, and EDS-STEM. Our results reveal that the improvement in reducibility derived from the incorporation of Ce did not have a positive impact on catalytic behaviour thus contrasting with the results reported in the literature for other Ce-based catalytic compositions. On the contrary, the available Ni-metallic surface and the presence of weak basic sites derived from Ca incorporation seem to play a major role on the catalytic performance for APR of methanol. The best performance was found for a Ce-free catalyst with a molar Ca content of 4%.
PB MDPI
SN 2079-4991
YR 2019
FD 2019-11
LK http://hdl.handle.net/10498/22184
UL http://hdl.handle.net/10498/22184
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 14-nov-2026