Hydrogen permeation through surface modified Pd and PdAg membranes

Amandusson, Helena; Ekedahl, Lars-Gunnar; Dannetun, Helen

doi:10.1016/s0376-7388(01)00414-8

Cited by 170 publications

(91 citation statements)

References 24 publications

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“…In these cases, hydrogen flux linearly where P o and P i denote the hydrogen pressure at outer and inner of membrane, respectively. This indicates that permeation of hydrogen through Pd-Au alloy membranes obeys the Sievert's law 28) as those observed for the pure Pd membranes. Thus, molecular hydrogen dissociates at the membrane surface and dissolves into Pd, followed by diffusion through the metallic matrix and then emerges as molecular hydrogen upon re-association.…”

Section: Alloying Of Pd-au Membranesupporting

confidence: 68%

Preparation and Hydrogen Permeation Properties of Thin Pd-Au Alloy Membranes Supported on Porous α-Alumina Tube

et al. 2008

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Defect free palladium (Pd) and gold (Au) alloy membranes (4-5 mm thickness) supported on the porous -alumina tubes were fabricated by electroless plating technique followed by thermal annealing. Contents of Au were adjusted from 0 to 10 mass% by controlling the concentration of K[Au(CN) 4 ] in the electroless plating solution. The alloy membranes were characterized by the X-ray diffraction analysis, SEM observation, and elemental analysis with EDX and ICP-atomic emission spectrophotometry (ICP-AES). The performances of the Pd-Au alloy membranes were evaluated with respect to the hydrogen flux, perm-selectivity and long term operation tested at 600 C.

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Section: Alloying Of Pd-au Membranesupporting

confidence: 68%

Preparation and Hydrogen Permeation Properties of Thin Pd-Au Alloy Membranes Supported on Porous α-Alumina Tube

et al. 2008

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“…This report updates the correlation of low-temperature (500-550°C) phase boundary data and hydrogen flux data. Because carbon monoxide (CO) is also reported [5][6][7] to adversely affect the performance of Pd-containing membranes, the variation in hydrogen flux for a thin-film ANL-3e membrane was studied during exposure for ≈4 months to simulated "coal gas" (51% H 2 /31% CO 2 /1% CO/17% He) in the temperature range of 400°C-600°C.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen separation membranes annual report for FY 2008.

Dorris¹,

Emerson²,

Lee³

et al. 2009

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“…This effect is more evident at lower temperatures up to achieving a complete blockage of the palladium at 100 • C with a consequent absence of hydrogen permeation through the membrane. [185] On the contrary, working at temperatures higher than 350 • C, no effects of contamination due to CO are noticed.…”

Section: Future Trends In Wgs Carried Out In Membrane Reactorsmentioning

confidence: 99%

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

Mendes

Madeira

et al. 2009

Asia-Pacific J Chem Eng

201

109

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The water-gas shift (WGS) reaction is a well-known step for upgrading carbon monoxide to hydrogen in the production of synthesis gas. For more than 90 years after its first industrial application, many issues in respect of the catalyst, process configuration, reactor design, reaction mechanisms and kinetics have been investigated. More recently, a renewed interest in the WGS reaction carried out in hydrogen perm-selective membrane reactors (MRs) has been observed because of the growing use of polymeric electrolyte membrane (PEM) fuel cells that operate using high-purity hydrogen. Moreover, MRs are viewed as an interesting technology in order to overcome the equilibrium conversion limitations in traditional reactors.This article reviews the most relevant topics of WGS MR technology -catalysis and membrane science. The most used catalysts and relevant progress achieved so far are described and critically reviewed. The effects of the most important parameters affecting the WGS in MRs are detailed. In addition, an overview on the most used membranes in MRs is also presented and discussed. 

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Hydrogen permeation through surface modified Pd and PdAg membranes

Cited by 170 publications

References 24 publications

Preparation and Hydrogen Permeation Properties of Thin Pd-Au Alloy Membranes Supported on Porous α-Alumina Tube

Preparation and Hydrogen Permeation Properties of Thin Pd-Au Alloy Membranes Supported on Porous α-Alumina Tube

Hydrogen separation membranes annual report for FY 2008.

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

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Hydrogen permeation through surface modified Pd and PdAg membranes

Cited by 170 publications

References 24 publications

Preparation and Hydrogen Permeation Properties of Thin Pd-Au Alloy Membranes Supported on Porous &alpha;-Alumina Tube

Preparation and Hydrogen Permeation Properties of Thin Pd-Au Alloy Membranes Supported on Porous &alpha;-Alumina Tube

Hydrogen separation membranes annual report for FY 2008.

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

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Preparation and Hydrogen Permeation Properties of Thin Pd-Au Alloy Membranes Supported on Porous α-Alumina Tube

Preparation and Hydrogen Permeation Properties of Thin Pd-Au Alloy Membranes Supported on Porous α-Alumina Tube