Production of ultrapure hydrogen in a Pd-Ag membrane reactor using noble–metal supported on La-based oxides. Modeling for the dry reforming of methane reaction.

J.F. MÚNERA, L. CORONEL, B. FAROLDI, C. CARRARA, E.A. LOMBARDO, L.M. CORNAGLIA

Asia-Pacific Journal of Chemical Engineering

Wiley

Año: 2008

1932-2135

A review is presented here of our previous contributions concerning the production of ultrapure hydrogen through the dry reforming of methane conducted in a membrane reactor. The reaction equilibration ratio is the criterion to compare the catalytic performance of the La-based catalysts used in these studies. The solids were characterized by Laser Raman, X- ray Photoelectron Spectroscopy, X-ray Diffraction and Temperature-Programmed Reduction. The different behaviors are discussed taking  into account  the characterization  results.In order to predict the influence of key process variables on conversion and product composition, a mathematical model is proposed to simulate the membrane reactor built around a palladium-silver membrane with 100% hydrogen selectivity. This study uses the kinetic equations developed for the dry reforming reaction on a Rh/La2O3 catalyst.