INVESTIGADORES
CORNAGLIA Laura Maria
artículos
Título:
Pd based membrane reactor for ultra pure hydrogen production through the dry reforming of methane. Experimental and modeling studies
Autor/es:
L. CORONEL, J.F. MÚNERA, E.A. LOMBARDO, L.M. CORNAGLIA
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2011 vol. 400 p. 185 - 194
ISSN:
0926-860X
Resumen:
A dense Pd-Ag membrane reactor (MR) with 100% hydrogen
selectivity packed with either Rh/La2O3 or Rh/La2O3-SiO2 as catalysts was used
to carry out the dry reforming of methane. The membrane reactor simulation was
performed using a well-known reactor model. For this purpose, we employed the
equations derived from complete kinetic studies of the dry reforming of methane
reaction in connection with both catalysts. In addition, we developed the
kinetic equation for the reverse water gas shift reaction (RWGS). The
combination of detailed kinetic studies with the measured permeation flux for
the Pd-Ag membrane allowed a complete comparison between experimental and
simulated operation variables. The variables studied for both catalysts were
methane conversion and hydrogen permeation as a function of the sweep gas flow
rate. The correlation between methane conversion enhancement and hydrogen
recovery confirmed that a good prediction was obtained with this model. The
performance of two reactor configurations (membrane reactor and conventional
fixed-bed reactor) and both co-current and counter-current flow modes were
compared. The effect of various operating variables such as permeation area,
sweep gas flow rate and feed composition upon conversion, product compositions
and hydrogen recovery were analyzed