Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/37370
Título: | Synthesis of Pd-Ag alloy membranes and their application in membrane reactors for hydrogen production and purification |
Autor(es): | Pérez, P. Soria, Miguel A. Pereira, Ana Isabel Tavares, C. J. Tosti, Silvano Mendes, A. Madeira, L. M. |
Palavras-chave: | Hydrogen production Water-gas shift reaction Pd-Ag membrane Membrane reactor |
Data: | 2012 |
Resumo(s): | Pd-Ag based membranes, self-supported and supported on porous α-Al2O3, have been studied for hydrogen selective separation. In the case of the self-supported membranes the Pd-Ag permeator tube was prepared by cold-rolling and diffusion welding technique; magnetron sputtering technique was employed for the synthesis of the membrane supported on porous α-Al2O3. The results have shown that the self supported Pd-Ag membranes are infinitively H2-selective and the H2-permeation rate through this membrane is in accordance with Sieverts´ law for detect-free meal membranes; hence, an ultra-pure hydrogen stream can be obtained. The Pd-Ag membrane supported on porous α-Al2O3 is not completely selective towards H2, but requires much less metal since it is much thinner (ca. ~50 vs. 1 µm). In this work, it was studied the water-gas shift on Pd-Ag membrane reactor, but it was also illustrated another application of palladium membranes, in the ethanol steam reforming. The use of the self-supported Pd-Ag membrane leads to enhance the H2 yield in both reactions, providing much better performances than conventional reactors. |
Tipo: | Resumo em ata de conferência |
URI: | https://hdl.handle.net/1822/37370 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - GRF - Comunicações/Communications (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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H2 Eco-Community - Extended Abstract-final 2012.pdf | Synthesis of Pd-Ag alloy membranes and their application in membrane reactors for hydrogen production and purification | 685,68 kB | Adobe PDF | Ver/Abrir |