Pd-based metallic supported membranes: High-temperature stability and fluidized bed reactor testing

Medrano, J.A.; Fernandez, Ekain; Meléndez, J.; Parco, María; Tanaka, David A. Pacheco; Annaland, Martin van Sint; Gallucci, Fausto

doi:10.1016/j.ijhydene.2015.10.094

Cited by 69 publications

(61 citation statements)

References 30 publications

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“…achieve high H2 fluxes. On the other hand, metallic supported membranes have shown very good stabilities over time with outstanding selectivities [36,37]. However, the permeance values measured are in general 3-4 times lower than ceramic supported membranes, thus longer membranes should be prepared in order to achieve the desired targets of H2 permeation with the corresponding economical penalty for the process.…”

Section: Metal Based Membranes For H2 Productionmentioning

confidence: 99%

Process Intensification via Membrane Reactors, the DEMCAMER Project

et al. 2016

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This paper reports the findings of a FP7 project (DEMCAMER) that developed materials (catalysts and membranes) and new processes for four industrially relevant reaction processes. In this project, active, stable, and selective catalysts were developed for the reaction systems of interest and their production scaled up to kg scale (TRL5 (TRL: Technology Readiness Level)). Simultaneously, new membranes for gas separation were developed; in particular, dense supported thin palladium-based membranes for hydrogen separation from reactive mixtures. These membranes were successfully scaled up to TRL4 and used in various lab-scale reactors for water gas shift (WGS), using both packed bed and fluidized bed reactors, and Fischer-Tropsch (FTS) using packed bed reactors and in prototype reactors for WGS and FTS. Mixed ionic-electronic conducting membranes in capillary form were also developed for high temperature oxygen separation from air. These membranes can be used for both Autothermal Reforming (ATR) and Oxidative Coupling of Methane (OCM) reaction systems to increase the efficiency and the yield of the processes. The production of these membranes was scaled up to TRL3-4. The project also developed adequate sealing techniques to be able to integrate the different membranes in lab-scale and prototype reactors.

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Section: Metal Based Membranes For H2 Productionmentioning

confidence: 99%

Process Intensification via Membrane Reactors, the DEMCAMER Project

et al. 2016

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“…Pd-based selective layers onto tubular supports were developed by direct simultaneous Pd and Ag electroless plating deposition [51][52][53][54] in a one step process. Pd membranes for the micro-channel supported membranes were developed using a two-step process [55,56] where the defect free Pd-alloy film is first prepared by sputtering deposition onto the extremely smooth surface of a silicon wafer.…”

Section: Membranesmentioning

confidence: 99%

“…Overall, the use of ceramic supports implies that less surface area is needed in order to achieve high H2 fluxes. On the other side, metallic supported membranes have shown very good stabilities over time with outstanding selectivities [52,53]. Nevertheless, the permeance values measured are 3-4 times lower than ceramic supported membranes when membranes are developed by direct electroless plating (ELP) deposition [51,52], thus a longer membrane area should be prepared in order to achieve the desired target of H2 permeation with the corresponding economical penalty for the process.…”

Section: Membranesmentioning

confidence: 99%

“…On the other side, permeation tests of Pd-Ag metallic supported membranes showed H2 permeances of 1 × 10 −6 mol·m −2 ·s −1 ·Pa −1 and ideal perm-selectivities H2/N2 higher than 200,000. Detailed information and characterization of these membranes can be found in the work of Fernandez et al [51,52] and Medrano et al [53]. Table 2 lists commercially available membranes and most promising thin Pd-based membranes (with high H2 permeation) reported in the literature.…”

Section: Membranesmentioning

confidence: 99%

“…Later on, both were integrated in the reactor and tested under steam reforming and autothermal reforming of methane in fluidized bed membrane reactors. Two different types of membranes were tested: Pd-based tubular ceramic supported membranes (Figure 4) and Pd-based tubular metallic supported membranes ( Figure 5) both developed by direct simultaneous Pd and Ag electroless plating (ELP) deposition [51][52][53][54] in a one step process.…”

Section: Fluidized Bed Membrane Reactormentioning

confidence: 99%

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Process Intensification in Fuel Cell CHP Systems, the ReforCELL Project

et al. 2016

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This paper reports the findings of a FP7/FCH JU project (ReforCELL) that developed materials (catalysts and membranes) and an advance autothermal membrane reformer for a micro Combined Heat and Power (CHP) system of 5 kWel based on a polymer electrolyte membrane fuel cell (PEMFC). In this project, an active, stable and selective catalyst was developed for the reactions of interest and its production was scaled up to kg scale (TRL5 (TRL: Technology Readiness Level)). Simultaneously, new membranes for gas separation were developed. In particular, dense supported thin palladium-based membranes were developed for hydrogen separation from reactive mixtures. These membranes were successfully scaled up to TRL4 and used in lab-scale reactors for fluidized bed steam methane reforming (SMR) and autothermal reforming (ATR) and in a prototype reactor for ATR. Suitable sealing techniques able to integrate the different membranes in lab-scale and prototype reactors were also developed. The project also addressed the design and optimization of the subcomponents (BoP) for the integration of the membrane reformer to the fuel cell system.

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