Development of a multi-species transport space theory and its application to permeation behavior in proton-conducting doped perovskites

Sanders, Michael; O’Hayre, Ryan

doi:10.1039/c0jm00064g

Cited by 16 publications

(12 citation statements)

References 15 publications

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“…A theoretical analysis of the combined oxygen and water vapor transfer through the proton conductor was presented in the studies of Virkar [239], Coors [240], and Sanders and O'Hayre [241].…”

Section: Hydrogen and Water Vapor Pumpsmentioning

confidence: 99%

BaCeO3: Materials development, properties and application

Medvedev

Мурашкина

Demin

et al. 2014

Progress in Materials Science

346

158

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Section: Hydrogen and Water Vapor Pumpsmentioning

confidence: 99%

BaCeO3: Materials development, properties and application

Medvedev

Мурашкина

Demin

et al. 2014

Progress in Materials Science

346

158

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“…In this article, a transient mathematical model has been established to describe the steam permeation through the HTPCM perovskite membranes, in which the distribution of the charged defects in the membranes is taken into consideration. The transfer of charged species in the solid electrolyte is described by the PNP equations . The effects of a variety of parameters including the membrane thickness, operating temperature, and steam partial pressures on the steam permeation process have been simulated and carefully discussed.…”

Section: Introductionmentioning

confidence: 99%

Modeling of steam permeation through the high temperature proton‐Conducting ceramic membranes

et al. 2018

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The BaCeO3‐based perovskite oxide can be applied as a steam‐permeable membrane due to their noticeable mixed oxygen ion and proton conducting properties. In this article, a transient model of the steam permeation through the BaCe0.9Y0.1O3‐δ perovskite membrane at elevated temperatures has been developed with the Poisson–Nernst–Planck equations for analyzing the steam permeation process, in which the distribution of charged defects in the membrane is carefully considered. The effects of the operating temperature, the membrane thickness, the steam partial pressure, and the electric potential difference between two membrane sides during the steam permeation have been simulated and discussed. The modeling results indicate there exists a maximum value of the spontaneous electric potential difference with the temperature rise and the external electric potential can obviously increase the steam flux. The model is validated using the experimental results from literature under steady state operational conditions. © 2018 American Institute of Chemical Engineers AIChE J, 65: 777–782, 2019

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“…Among the different geometries employed for the ITM reactor, the flatplate system offers some advantages because it reduces the number of seals and thus makes safer operation. Among the ITM systems, perovskite structures remain prominent as they allow safe operation [58]. In the ITM oxygen is taken from air but in no case the oxygen is in direct contact with methane stream.…”

Section: Membrane Systemsmentioning

confidence: 99%

Recent Developments in the Partial Oxidation of Methane to Syngas

Al-Sayari¹

2013

TOCATJ

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Natural gas is catalytically converted into several bulk chemicals such as ammonia, methanol, dimethyl ether, and synthetic liquid fuels by Fischer-Tropsch synthesis and similar processes. The main step in the conversion of natural gas to these products is the production of synthesis gas with the desired composition ranging from H 2 /CO = 3:1 used for the production of ammonia to the 1:1 mixture preferred for production of dimethyl ether. Catalysts and catalytic processes are important in the production of synthesis gas from natural gas. In this work, relevant catalytic systems employed recently in the production of syngas by the catalytic partial oxidation of methane, as well as experimental evidences on the reaction mechanisms are examined. Differences in methane dissociation, binding site preferences, stability of OH surface species, surface residence times of active species and contributions from lattice oxygen atoms and support species are considered. The methane dissociation requires reduced metal sites, but at elevated temperatures oxides of active species may be reduced by direct interaction with methane or from the reaction with H 2 and CO (or C). The comparison of elementary reaction steps on Pt and Rh illustrates the fact that a key factor to produce hydrogen as primary product is a high activation energy barrier to the formation of OH. Another essential property for the formation of H 2 and CO as primary products is a low surface coverage of intermediates, such that the probability of O-H, OH-H and CO-O interactions is reduced.

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Development of a multi-species transport space theory and its application to permeation behavior in proton-conducting doped perovskites

Cited by 16 publications

References 15 publications

BaCeO3: Materials development, properties and application

BaCeO3: Materials development, properties and application

Modeling of steam permeation through the high temperature proton‐Conducting ceramic membranes

Recent Developments in the Partial Oxidation of Methane to Syngas

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