Dense Inorganic Membranes for Hydrogen Separation

Lundin, Sean-Thomas B.; Patki, Neil S.; Fuerst, Thomas F.; Ricote, Sandrine; Wolden, Colin A.; Way, J. Douglas

doi:10.1142/9789813207714_0007

Cited by 7 publications

(12 citation statements)

References 13 publications

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“…The hydrogen permeance displayed expected behavior, and the membrane proved to be very stable over another >340 h of cumulative ammonia-decomposition testing, including numerous temperature and pressure swings. The hydrogen permeance was well-described using a Sieverts’ exponent of n = 1, consistent with the rate-limiting step being hydrogen dissociation as often observed in thin Pd membranes . The slight increase in permeance and detection of N 2 at 350 °C is attributed to minor defect formation that occurred during ∼700 h testing.…”

Section: Methodsmentioning

confidence: 99%

“…The hydrogen permeance was well-described using a Sieverts' exponent of n = 1, consistent with the rate-limiting step being hydrogen dissociation as often observed in thin Pd membranes. 54 The slight increase in permeance and detection of N 2 at 350 °C is attributed to minor defect formation that occurred during ∼700 h testing.…”

Section: ■ Experimental Detailsmentioning

confidence: 99%

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Efficient Ammonia Decomposition in a Catalytic Membrane Reactor To Enable Hydrogen Storage and Utilization

Zhang

Liguori

Fuerst

et al. 2019

ACS Sustainable Chem. Eng.

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Liquid ammonia is a high-density (17.7 wt %) hydrogen carrier with a well-established production and distribution infrastructure. Efficient decomposition and purification are essential for its use as a hydrogen-storage material. Here we demonstrate the production of high-purity (>99.7%) H 2 from NH 3 using a catalytic membrane reactor (CMR) in which a Ru catalyst is impregnated within a porous yttria-stabilized zirconia (YSZ) tube coated with a thin, 6 μm Pd film by electroless deposition. The intimate proximity of catalyst and membrane eliminates transport resistances that limit performance in the conventional packed-bed membrane reactor (PBMR) configuration. The addition of a Cs promoter enabled complete NH 3 conversion at temperatures as low as 400 °C, exceeding equilibrium constraints without the need for a sweep gas. A reactor model was developed that captured CMR performance with high fidelity. NH 3 decomposition was observed to follow first-order kinetics due to efficient H 2 removal. Relative to a comparable PBMR, the Ru loading in the CMR was reduced an order of magnitude and the H 2 recovery increased 35%, enabling record volumetric productivity rates (>30 mol m −3 s −1 ) that validate its promise for efficient, compact H 2 delivery from ammonia.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Experimental Detailsmentioning

confidence: 99%

Efficient Ammonia Decomposition in a Catalytic Membrane Reactor To Enable Hydrogen Storage and Utilization

Zhang

Liguori

Fuerst

et al. 2019

ACS Sustainable Chem. Eng.

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“…These ceramic materials, such as perovskite-type oxides, pyrochlores, niobates, tantalates and tungstates, often have a large number of protons and high electronic conductivity [88]. The crystal structures of these ceramic materials have been well studied in the literature [88,89]. Perovskites based oxides (e.g., BaCeO 3 , SrZrO 3 and SrCeO 3 ) are the most common proton conducting materials with proton conductivity in range of 10 -3 -10 -2 S•cm -1 (400°C-1000°C) [90].…”

Section: Ceramic Mixed Protonic-electronic Conducting Membranesmentioning

confidence: 99%

“…To the best knowledge of authors, the study on H 2 /CH 4 separation using this type of membranes is very rarely seen. In addition, CH 4 can be dimerised on the surface of ceramic proton conducting membranes such as SrCe 0.95 Yb 0.05 O 3 -α -Pt[89]. Hence, ceramic mixed protonic-electronic conducting membranes are not suitable for hydrogen separation from HENG.…”

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confidence: 99%

The opportunity of membrane technology for hydrogen purification in the power to hydrogen (P2H) roadmap: a review

Miandoab

et al. 2020

Front. Chem. Sci. Eng.

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The global energy market is in a transition towards low carbon fuel systems to ensure the sustainable development of our society and economy. This can be achieved by converting the surplus renewable energy into hydrogen gas. The injection of hydrogen (⩽10% v/v) in the existing natural gas pipelines is demonstrated to have negligible effects on the pipelines and is a promising solution for hydrogen transportation and storage if the end-user purification technologies for hydrogen recovery from hydrogen enriched natural gas (HENG) are in place. In this review, promising membrane technologies for hydrogen separation is revisited and presented. Dense metallic membranes are highlighted with the ability of producing 99.9999999% (v/v) purity hydrogen product. However, high operating temperature (⩾300 °C) incurs high energy penalty, thus, limits its application to hydrogen purification in the power to hydrogen roadmap. Polymeric membranes are a promising candidate for hydrogen separation with its commercial readiness. However, further investigation in the enhancement of H 2 /CH 4 selectivity is crucial to improve the separation performance. The potential impacts of impurities in HENG on membrane performance are also discussed. The research and development outlook are presented, highlighting the essence of upscaling the membrane separation processes and the integration of membrane technology with pressure swing adsorption technology.

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“…Hydrogen separation can be accomplished using pressure-swing-adsorber (PSA) technology. Palladium membranes may also be used for hydrogen separation, although they can be susceptible to CO poisoning [20,21,22,23]. Compression is usually accomplished with reciprocating or rotating mechanical compression [13].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Insights for Electrochemical Hydrogen Compression with Proton-Conducting Membranes

et al. 2019

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Membrane electrode assemblies (MEA) based on proton-conducting electrolyte membranes offer opportunities for the electrochemical compression of hydrogen. Mechanical hydrogen compression, which is more-mature technology, can suffer from low reliability, noise, and maintenance costs. Proton-conducting electrolyte membranes may be polymers (e.g., Nafion) or protonic-ceramics (e.g., yttrium-doped barium zirconates). Using a thermodynamics-based analysis, the paper explores technology implications for these two membrane types. The operating temperature has a dominant influence on the technology, with polymers needing low-temperature and protonic-ceramics needing elevated temperatures. Polymer membranes usually require pure hydrogen feed streams, but can compress H 2 efficiently. Reactors based on protonic-ceramics can effectively integrate steam reforming, hydrogen separation, and electrochemical compression. However, because of the high temperature (e.g., 600 ° C) needed to enable viable proton conductivity, the efficiency of protonic-ceramic compression is significantly lower than that of polymer-membrane compression. The thermodynamics analysis suggests significant benefits associated with systems that combine protonic-ceramic reactors to reform fuels and deliver lightly compressed H 2 (e.g., 5 bar) to an electrochemical compressor using a polymer electrolyte to compress to very high pressure.

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Dense Inorganic Membranes for Hydrogen Separation

Cited by 7 publications

References 13 publications

Efficient Ammonia Decomposition in a Catalytic Membrane Reactor To Enable Hydrogen Storage and Utilization

Efficient Ammonia Decomposition in a Catalytic Membrane Reactor To Enable Hydrogen Storage and Utilization

The opportunity of membrane technology for hydrogen purification in the power to hydrogen (P2H) roadmap: a review

Thermodynamic Insights for Electrochemical Hydrogen Compression with Proton-Conducting Membranes

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