INVESTIGADORES
CORNAGLIA Laura Maria
artículos
Título:
Comparison of Ru/La2O2CO3 performance in two different membrane reactors for hydrogen production
Autor/es:
B. FAROLDI, M.L. BOSKO , J. MUNERA, E. LOMBARDO, L. CORNAGLIA
Revista:
CATALYSIS TODAY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 213 p. 135 - 144
ISSN:
0920-5861
Resumen:
Ruthenium catalysts
supported on a lanthanum oxycarbonate phase (La2O2CO3)
with high surface area were prepared. All solids were stable for at least 90 hours on
stream in the combined dry reforming and oxidation of methane reactions. The catalyst with more stable
metallic Ru species was selected to be studied under the more severe conditions
of membrane reactors. A double tubular membrane reactor was built using a
commercial self-standing membrane or a composite Pd/NaAPSS membrane. The Pd
membrane reactor exhibited a higher
H2 permeated/CH4 fed ratio at 450 °C that could be related
to its higher hydrogen permeability. The comparison of the catalytic behavior of Ru
catalysts supported on high surface area lanthanum oxycarbonate and La2O3-SiO2
binary support in a membrane reactor was performed at 550°C. On the retentate side, the
molar composition of CO2 was similar to that of CH4 when
the Ru/La2O2CO3
catalyst was employed, which suggests that this solid did not favor the RWGS
reaction under DRM conditions producing a higher H2 permeated/CH4 fed ratio. The Ru catalysts showed a similar performance to that of our best Rh solids when the fractions
of the reaction equilibration and H2
permeated/(CH4 fed x permeation area) ratio were compared.