A dense Pd/Ag membrane reactor for methanol steam reforming: Experimental study

Basile, Angelo; Gallucci, Fausto; Paturzo, Luca

doi:10.1016/j.cattod.2005.03.066

Cited by 86 publications

(24 citation statements)

References 26 publications

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“…5, where it can be seen that, by increasing the pressure, the hydrogen recovery increases for both co-current and [12] counter-current modes. This fact is due to the positive effect of the pressure on the hydrogen permeation through the membrane.…”

Section: Results Of the Modelling Analysis And Discussionmentioning

confidence: 91%

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The effect of the hydrogen flux pressure and temperature dependence factors on the membrane reactor performances

Gallucci

Falco

Tosti

et al. 2007

International Journal of Hydrogen Energy

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Section: Results Of the Modelling Analysis And Discussionmentioning

confidence: 91%

“…T = 750 K, P lumen = 3 bar. et al [7] Basile et al [8] Koffler et al [9] Balovnev [10]Itoh and Xu [11]Basile et al[12] Hydrogen permeability versus temperature for the membranes reported in the literature.…”

mentioning

confidence: 98%

The effect of the hydrogen flux pressure and temperature dependence factors on the membrane reactor performances

Gallucci

Falco

Tosti

et al. 2007

International Journal of Hydrogen Energy

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“…Recently, Basile et al [111,112] carried out the methanol steam reforming in both composite and dense membrane reactors. The best results were found operating at 450°C: a CO-free hydrogen recovery of 40% with respect to the total hydrogen produced was achieved in counter-current mode and high sweep gas flow rate by means of the Pd-Ag dense MR, whereas using a new CuOAl 2 O 3 -ZnO-MgO catalyst, complete methanol conversion was achieved in a recent work [113] in a thickness 50 lm pine-hole free Pd-Ag MR at 300°C and H 2 O/CH 3 OH ratio higher than 5/1, while the carbon monoxide selectivity was lower than 1%.…”

Section: Methanol Steam Reformingmentioning

confidence: 99%

Hydrogen Production Using Pd-based Membrane Reactors for Fuel Cells

Basile

2008

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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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“…Recently, a number of researchers considered hydrogen membrane reactor/separator and simulated the performance methanol steam reforming at different operating conditions [29][30][31][32][33]. Important simulation work by Gallucci and Bassile [32,33] include the effects of different parameters between co-current and counter-current modes for methanol steam reforming in a membrane reactor.…”

Section: Modeling Of Steam Methanol Reforming In Membrane Reactormentioning

confidence: 99%

Development of Pd-Ag Compostie Membrane for Separation of Hydrogen at Elevated Temperature

Ilias¹

2009

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Pd-based membrane reactor offers the possibility of combining reaction and separation in a single operation at high temperatures to overcome the equilibrium limitations experienced in conventional reactor configurations. In this project to develop a defect-free and thermally-stable Pd-film on microporous stainless steel (MPSS) support for H 2 -separation and membrane reactor applications, the electroless plating process was revisited with an aim to improve the membrane morphology. Specifically, this study includes; (a) an improvement of activation step using Pulse Laser Deposition (PLD), (b) development of a novel surfactant induced electroless plating (SIEP) for depositing robust Pd-film on microporous support, and (c) application of Pd-membrane as membrane reactor in steam methanol reforming (SMR) reactions.In conventional sensitization/activation steps, Pd-seed deposition is uneven and penetration in the pore is problematic. To address this, PLD developed Pd-nuclei directly onto microporous substrate was explored. EDX (Energy Dispersive X-ray) and SEM (Scanning Electron Microscopy) results showed significant improved in Pd-nuclei deposition.In electroless plating, it was identified that the gas bubbles (ammonia and nitrogen) that released due to autocatalytic reactions tend to adhere to the substrate surface and result in poor Pddeposition. Incorporation of cationic surface active agents with favorable structures into the plating bath appears to be a promising remedy of surface to prevent gas bubbles from growing within the vicinity of the plating substrate. More importantly, suitable cationic charge and concentration would be useful to tailor the Pd-grain size and subsequent agglomeration. The surface morphology and compositional microstructures were examined using SEM coupled with in-situ EDS (Energy Dispersive Spectroscopy).Steam methanol reforming (SMR) was carried out in a Pd-MPSS membrane reactor fabricated by SIEP method. Experimental results along with modeling work revealed that the Pd-based membrane reactor was superior to conventional non-membrane reforming reactors with respect to conversion, selectivity and hydrogen productivity.In summary, we demonstrated that by using suitable surfactant in electroless plating, the Pd-film morphology can be significantly improved. This is a significant development in electroless plating method. This work resulted in an US patent filing. The Pd-MPSS membrane fabricated by SIEP showed excellent H 2 -permselectivity. The application of Pd-MPSS membrane as membrane reactorseparator is demonstrated by running SMR reaction.iv

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A dense Pd/Ag membrane reactor for methanol steam reforming: Experimental study

Cited by 86 publications

References 26 publications

The effect of the hydrogen flux pressure and temperature dependence factors on the membrane reactor performances

The effect of the hydrogen flux pressure and temperature dependence factors on the membrane reactor performances

Hydrogen Production Using Pd-based Membrane Reactors for Fuel Cells

Development of Pd-Ag Compostie Membrane for Separation of Hydrogen at Elevated Temperature

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