INVESTIGADORES
MUNERA AGUDELO John Fernando
artículos
Título:
Study of the performance of Rh/La2O3-SiO2 and Rh/CeO2 catalysts for SR of ethanol in a conventional fixed-bed reactor and a membrane reactor
Autor/es:
JOHN MÚNERA , EDUARDO LOMBARDO, LAURA CORNAGLIA; ADRIANA M. DA SILVA , LISIANE V. MATTOS, FABIO B. NORONHA
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2015 vol. 40 p. 4154 - 4166
ISSN:
0360-3199
Resumen:
The performance of Rh/La2O3eSiO2 and Rh/CeO2 catalysts for steam reforming of ethanolwas investigated in a conventional fixed-bed reactor and a membrane reactor. This reactorwas built with a self-supported PdeAg membrane, and its performance was compared tothat the conventional reactor employing the same residence time and temperature. Theeffect of steam to ethanol molar ratio, ethanol concentration, temperature and contacttime over hydrogen permeation and hydrogen recovery was investigated. In all cases, theethanol conversion was kept at 100%, and the products formed were only H2, CO2, CO andCH4. In the membrane reactor, the overall ethanol reforming reaction was favored withoutthe formation of carbon deposits. The highest permeated and H2 recovery was obtained forlow ethanol content in the feed (high H2O/Ethanol ratio) and the methane formation wasunfavored, in agreement with the high production of hydrogen.A slight difference in the hydrogen permeated/feed ethanol ratio was observed athigher sweep gas flow rates being higher for Rh supported on CeO2 in comparison with theRh/La2O3eSiO2 catalyst. The best results were obtained with a H2O/Ethanol molar ratioequal to 10 and the highest membrane permeation area. Under these conditions, the H2recovery reached values of about 70% and the hydrogen produced for each mole of ethanolexhibited the highest value close to 2.8.