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Alcohol dehydrogenation over Pd versus PdAg membranes
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Applied Physics .
2001 (English)In: Applied Catalysis A: General, ISSN 0926-860X, Vol. 217, no 1-2, 157-164 p.Article in journal (Refereed) Published
Abstract [en]

The dehydrogenation of methanol and ethanol and the subsequent permeation of hydrogen through Pd and Pd70Ag30 membranes, respectively, have been studied. In order to keep a continuous hydrogen permeation rate, oxygen needs to be added to the alcohol supply. Without oxygen, the decomposition products will form a contaminating layer on the upstream membrane surface. The extraction of hydrogen from ethanol is six times more effective through a Pd70Ag30 membrane than through a pure Pd membrane (at optimum conditions). For methanol, the hydrogen permeation is 30% larger through a Pd70Ag30 membrane than through a membrane of pure Pd. The increased hydrogen permeation yield through Pd70Ag30 compared to Pd can be attributed mainly to a lower upstream consumption of hydrogen due to water formation, but also to an increased conversion of the alcohol in the presence of oxygen. © 2001 Elsevier Science B.V.

Place, publisher, year, edition, pages
2001. Vol. 217, no 1-2, 157-164 p.
Keyword [en]
Ethanol, Hydrogen, Membrane, Methanol, Palladium, Silver
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-47269DOI: 10.1016/S0926-860X(01)00591-9OAI: oai:DiVA.org:liu-47269DiVA: diva2:268165
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-13

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Ekedahl, Lars-GunnarDannetun, Helen

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