Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/103663
Author(s): | Luís M. Madeira Patricia Pérez Miguel A. Soria Ana I. Pereira Carlos J. Tavares Adélio Mendes Silvano Tosti |
Title: | Synthesis of Pd-Ag Alloy Membranes and their Application in Membrane Reactors for Hydrogen Production and Purification |
Issue Date: | 2012 |
Abstract: | 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 SievertsŽ 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. |
URI: | https://hdl.handle.net/10216/103663 |
Source: | Advances in Hydrogen Energy Technologies: Key to Sustainable Energy Markets, 5th International Seminar |
Document Type: | Artigo em Livro de Atas de Conferência Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Livro de Atas de Conferência Internacional |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
142070.pdf Restricted Access | 685.68 kB | Adobe PDF | Request a copy from the Author(s) |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.