Ni(7.5 wt.%)/CeO2 and Ni(7.5 wt.%)-Rh(0.5 wt.%)/CeO2 powders (previously prepared by solution combustion synthesis) were washcoated on cordierite monolith and alumina open-cell foam by means of support dip-coating into acid-free catalyst dispersion. Catalytic performances toward the steam reforming (SR) and the oxy-steam reforming (OSR) of biogas were investigated and compared at different temperatures (700–800◦C) and weight space velocities (WSV = 70,000–350,000 Nml gcat−1 h−1). Coating load was controlled by multiple depositions; homogeneous and well adherent layers were found. Catalytic tests demonstrated superior performances of the bimetallic samples (Ni–Rh/CeO2) compared to the monometallic one (Ni/CeO2), especially at high space velocity. At the same time, foam showed better performances with respect to the monolithic support toward the SR and OSR processes.

Preparation of structured catalysts with Ni and Ni-Rh/CeO2 catalytic layers for syngas production by biogas reforming processes

BALZAROTTI, RICCARDO;LATORRATA, SAVERIO;CRISTIANI, CINZIA
2016

Abstract

Ni(7.5 wt.%)/CeO2 and Ni(7.5 wt.%)-Rh(0.5 wt.%)/CeO2 powders (previously prepared by solution combustion synthesis) were washcoated on cordierite monolith and alumina open-cell foam by means of support dip-coating into acid-free catalyst dispersion. Catalytic performances toward the steam reforming (SR) and the oxy-steam reforming (OSR) of biogas were investigated and compared at different temperatures (700–800◦C) and weight space velocities (WSV = 70,000–350,000 Nml gcat−1 h−1). Coating load was controlled by multiple depositions; homogeneous and well adherent layers were found. Catalytic tests demonstrated superior performances of the bimetallic samples (Ni–Rh/CeO2) compared to the monometallic one (Ni/CeO2), especially at high space velocity. At the same time, foam showed better performances with respect to the monolithic support toward the SR and OSR processes.
CATALYSIS TODAY
Structured supports, Monoliths, Foams, Washcoating, Steam reforming, Oxy-steam reforming, Nickel Rhodium Bimetallic catalyst
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/1024642
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