Low temperature ethanol steam reforming in a Pd-Ag membrane reactor
2007; Elsevier BV; Volume: 308; Issue: 1-2 Linguagem: Inglês
10.1016/j.memsci.2007.10.001
ISSN1873-3123
AutoresSilvano Tosti, Angelo Basile, Fabio Borgognoni, V. Capaldo, Stefano Cordiner, Sergio Di Cave, Fausto Gallucci, C. Rizzello, Alessia Santucci, Enrico Traversa,
Tópico(s)Electrocatalysts for Energy Conversion
ResumoThe ethanol steam reforming has been carried out in a membrane reactor consisting of a Ru-based catalyst bed packed into a thin wall Pd-Ag permeator tube produced via cold-rolling and diffusion welding of metal foils. The experimental tests have been performed in the temperature range 400–450 °C with the aim of studying the performances of the membrane reactor in terms of hydrogen yields. The main investigated operating parameters have concerned the water/ethanol feed molar ratio (8.4–13.0), the pressure inside the membrane (150–200 kPa), the sweep gas mode (co-current and counter-current) and the spatial velocity. In all the tests, ultra pure hydrogen has been separated through the Pd-Ag membrane: especially, operating at 450 °C and 200 kPa, a hydrogen yield higher than 80% has been produced thus demonstrating the membrane ability of promoting the reaction conversion (shift effect).
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