Catalytic activation of ceramic H2 membranes for CMR processes

Escolástico, Sonia; Kjølseth, Christian; Serra, José M.

doi:10.1016/j.memsci.2016.06.017

Cited by 17 publications

(8 citation statements)

References 36 publications

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“…In the light of the previous reports on similar cercer composites636485, the effect of Pt layer applied on the surface of the tested membrane on water splitting reaction must be also taken into consideration. According to62, no contribution of water splitting to the H 2 permeation could be evidenced at lower water vapor pressure at the sweep side due to omitting Pt catalyst layer.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen separation through tailored dual phase membranes with nominal composition BaCe0.8Eu0.2O3-δ:Ce0.8Y0.2O2-δ at intermediate temperatures

Ivanova

Escolástico

Balaguer

et al. 2016

Sci Rep

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Hydrogen permeation membranes are a key element in improving the energy conversion efficiency and decreasing the greenhouse gas emissions from energy generation. The scientific community faces the challenge of identifying and optimizing stable and effective ceramic materials for H2 separation membranes at elevated temperature (400–800 °C) for industrial separations and intensified catalytic reactors. As such, composite materials with nominal composition BaCe0.8Eu0.2O3-δ:Ce0.8Y0.2O2-δ revealed unprecedented H2 permeation levels of 0.4 to 0.61 mL·min−1·cm−2 at 700 °C measured on 500 μm-thick-specimen. A detailed structural and phase study revealed single phase perovskite and fluorite starting materials synthesized via the conventional ceramic route. Strong tendency of Eu to migrate from the perovskite to the fluorite phase was observed at sintering temperature, leading to significant Eu depletion of the proton conducing BaCe0.8Eu0.2O3-δ phase. Composite microstructure was examined prior and after a variety of functional tests, including electrical conductivity, H2-permeation and stability in CO2 containing atmospheres at elevated temperatures, revealing stable material without morphological and structural changes, with segregation-free interfaces and no further diffusive effects between the constituting phases. In this context, dual phase material based on BaCe0.8Eu0.2O3-δ:Ce0.8Y0.2O2-δ represents a very promising candidate for H2 separating membrane in energy- and environmentally-related applications.

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Section: Resultsmentioning

confidence: 99%

Hydrogen separation through tailored dual phase membranes with nominal composition BaCe0.8Eu0.2O3-δ:Ce0.8Y0.2O2-δ at intermediate temperatures

Ivanova

Escolástico

Balaguer

et al. 2016

Sci Rep

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“…The membrane stability high steam content methane was also evaluated. After annealing at 700 °C and 3 bars f in 50% CH4-H2O atmosphere, the membranes kept totally dense and no secondary pha found [77]. Polfus et al also reported a densely sintered lanthanum tungstate dual membrane: La27W3.5Mo1.5O55.5-δ-La0.87Sr0.13CrO3-δ.…”

Section: Lanthanum Tungstate Cercer Membranesmentioning

confidence: 95%

Dual-Phase Mixed Protonic-Electronic Conducting Hydrogen Separation Membranes: A Review

Cheng

2022

Membranes

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Owing to the excellent properties of high selectivity, high thermal stability, and low cost, in the past twenty years, mixed protonic-electronic conducting hydrogen separation membranes have received extensive attention. In particular, dual-phase mixed protonic-electronic conducting membranes with high ambipolar conductivity are more attractive because of the high hydrogen permeability. This paper aimed to present a review of research activities on the dual-phase membranes, in which the components, the characteristics, and the performances of different dual-phase membranes are introduced. The key issues that affect the membrane performance such as the elimination of the inter-phase reaction, the combination mode of the phases, the phase ratio, and the membrane configuration were discussed. The current problems and future trends were simply recommended.

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“…Alternatives to expensive Pd-based membranes have been investigated to reduce the system cost, including silica-based and ceramics, 62 Ni alloys, amorphous Ni-Nb-Zr, and Pd-coated V, Nb, and Ta. 46,63 However, limitations in stability, selectivity and permeability, requires intense research to improve their H2 productivity and purity.…”

Section: A B Cmentioning

confidence: 99%

A technological roadmap to the ammonia energy economy: Current state and missing technologies

Morlanés

Katikaneni

Paglieri

et al. 2021

Chemical Engineering Journal

190

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Catalytic activation of ceramic H2 membranes for CMR processes

Cited by 17 publications

References 36 publications

Hydrogen separation through tailored dual phase membranes with nominal composition BaCe0.8Eu0.2O3-δ:Ce0.8Y0.2O2-δ at intermediate temperatures

Hydrogen separation through tailored dual phase membranes with nominal composition BaCe0.8Eu0.2O3-δ:Ce0.8Y0.2O2-δ at intermediate temperatures

Dual-Phase Mixed Protonic-Electronic Conducting Hydrogen Separation Membranes: A Review

A technological roadmap to the ammonia energy economy: Current state and missing technologies

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