Long-term tests of Pd–Ag thin wall permeator tube

Tosti, Silvano; Basile, Angelo; Bettinali, L.; Borgognoni, Fabio; Chiaravalloti, Francesco; Gallucci, Fausto

doi:10.1016/j.memsci.2006.08.006

Cited by 81 publications

(29 citation statements)

References 14 publications

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“…Tosti et al [178] verified that self-supported dense Pd-Ag 23 wt.% tubular membranes with finger-type configuration are highly durable and reliable since they allowed to attain complete hydrogen selectivity and no failures were observed after at least one year of thermal and hydrogenation cycles. These characteristics, together with high permeability, make such materials very promising for ultra-pure hydrogen production in industrial and energetic applications (chemical industry, PEMFCs, etc.)…”

Section: Hydrogen Perm-selective Membranes For Membrane Reactorsmentioning

confidence: 98%

“…These characteristics, together with high permeability, make such materials very promising for ultra-pure hydrogen production in industrial and energetic applications (chemical industry, PEMFCs, etc.) [178]. However, the cost of these dense membranes is still a limiting factor, reason why a strong effort has been put in the preparation of thinner Pd films over different supports, by several techniques.…”

Section: Hydrogen Perm-selective Membranes For Membrane Reactorsmentioning

confidence: 99%

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Challenges and strategies for optimization of glycerol steam reforming process

Silva

Soria

Madeira

2015

Renewable and Sustainable Energy Reviews

193

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The steam reforming of the main biodiesel by-product, glycerol, has been catching up the interest of the scientific community in the last years. The use of glycerol for hydrogen production is an advantageous option not only because glycerol is renewable but also because it's use would lead to the decrease of the price of biodiesel, thus making it more competitive. Consequently, the use of biodiesel at large scale would significantly reduce CO2 emissions comparatively to fossil fuels. Moreover, hydrogen itself is seen as a very attractive clean fuel for transportation purposes.Therefore, the industrialization of the glycerol steam reforming (GSR) process would have a tremendous global environmental impact. In the last years, intensive research regarding GSR thermodynamics, catalysts, reaction mechanisms and kinetics, and innovative reactor configurations (sorption enhanced reactors (SERs) and membrane reactors (MRs)) has been done, aiming for improving the process effectiveness. In this review, the main challenges and strategies adopted for optimization of GSR process are addressed, namely the GSR thermodynamic aspects, the last developments on catalysis and kinetics, as well as the last advances on GSR performed in SERs and MRs.

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Section: Hydrogen Perm-selective Membranes For Membrane Reactorsmentioning

confidence: 98%

Section: Hydrogen Perm-selective Membranes For Membrane Reactorsmentioning

confidence: 99%

Challenges and strategies for optimization of glycerol steam reforming process

Silva

Soria

Madeira

2015

Renewable and Sustainable Energy Reviews

193

View full text Add to dashboard Cite

show abstract

“…Recently, Matzakos [203] showed a composite Pd/PSS membrane tested for approximately 6,000 h at 500°C under SRM conditions. Also Tosti et al [204] produced thin wall permeator tubes by diffusion welding of Pd-Ag foils, demonstrating the complete H 2 selectivity of the membrane. The reliability of these tubes was continuously tested during over 9,000 h of experimental campaign in the presence of both thermal and hydrogenation cycles.…”

Section: Long-term Durability Datamentioning

confidence: 99%

Hydrogen Production Using Pd-based Membrane Reactors for Fuel Cells

Basile

2008

Top Catal

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In this review, recent progress on palladiumbased membrane reactors (MRs) is outlined concentrating on the production of pure hydrogen. Various aspects are presented concerning some dehydrogenation reactions as well as an analysis of the palladium based membranes under study and the governing equations. Some critical aspects of non-palladium based membranes are presented. Moreover, some problems related to the effect of contamination of the Pd-based membranes and to the H 2 flux are introduced; the long-term durability problems of inorganic MRs are also discussed.

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“…Tosti et al . [130] illustrated that Pd-Ag MRs (consisting of thin-walled permeator tubes produced by diffusion-welding of Pd-Ag foils) present reduced costs on account of their reduced metal thickness. Moreover, Tosti verified the long life of a Pd-Ag MR operating continuously over 12 months, subjected to thermal and hydrogenation cycle tests.…”

Section: Dense and Composite Metallic Membranesmentioning

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

Self Cite

192

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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Long-term tests of Pd–Ag thin wall permeator tube

Cited by 81 publications

References 14 publications

Challenges and strategies for optimization of glycerol steam reforming process

Challenges and strategies for optimization of glycerol steam reforming process

Hydrogen Production Using Pd-based Membrane Reactors for Fuel Cells

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

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