Non-noble metal catalysts coated on oxygen-permeable membrane reactors for hydrogen separation

Cai, Lili; Zhu, Yue; Cao, Zhongwei; Li, Hongbo; Zhu, Xuefeng; Yang, Weishen

doi:10.1016/j.memsci.2019.117463

Cited by 26 publications

(18 citation statements)

References 46 publications

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“…Recently, mixed ionic-electronic conducting membrane reactors (MIEC-MRs) were suggested for hydrogen separation via a process coupling water splitting. [156][157][158][159] The reaction of water to oxygen and hydrogen is simple, but is difficult to achieve in a traditional reactor. The water splitting conversion is only 0.1% even at a high temperature of 1600 °C.…”

Section: Statusmentioning

confidence: 99%

“…For MIEC materials, their ionic and electronic conductivities change with oxygen partial pressure greatly in the range of 1-10 −21 atm at elevated temperatures, [162] while the MIEC-MR for H 2 separation is typically operated in the oxygen partial pressure of 10 −10 -10 −21 atm. [157][158][159]163] Accordingly, the design of membrane materials for H 2 separation is different from that for oxygen separation. Thus, developing materials with good stability and high oxygen permeability is a challenging task in this field.…”

Section: Recent Advances and Future Challengesmentioning

confidence: 99%

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Roadmap for Sustainable Mixed Ionic‐Electronic Conducting Membranes

Chen

Feldhoff

Weidenkaff

et al. 2021

Adv Funct Materials

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Mixed ionic-electronic conducting (MIEC) membranes have gained growing interest recently for various promising environmental and energy applications, such as H 2 and O 2 production, CO 2 reduction, O 2 and H 2 separation, CO 2 separation, membrane reactors for production of chemicals, cathode development for solid oxide fuel cells, solar-driven evaporation and energy-saving regeneration as well as electrolyzer cells for powerto-X technologies. The purpose of this roadmap, written by international specialists in their fields, is to present a snapshot of the state-of-the-art, and provide opinions on the future challenges and opportunities in this complex multidisciplinary research field. As the fundamentals of using MIEC membranes for various applications become increasingly challenging tasks, particularly in view of the growing interdisciplinary nature of this field, a better understanding of the underlying physical and chemical processes is also crucial to enable the career advancement of the next generation of researchers. As an integrated and combined article, it is hoped that this roadmap, covering all these aspects, will be informative to support further progress in academics as well as in the industry-oriented research toward commercialization of MIEC membranes for different applications.

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Section: Statusmentioning

confidence: 99%

Section: Recent Advances and Future Challengesmentioning

confidence: 99%

Roadmap for Sustainable Mixed Ionic‐Electronic Conducting Membranes

Chen

Feldhoff

Weidenkaff

et al. 2021

Adv Funct Materials

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“…In previous studies, many stable OTM materials were developed in these harsh conditions. Among them, OTMs, including BaCo x Fe y Zr 1−x−y O 3−δ , 32,33 La 0.9 Ca 0.1 FeO 3‐δ , 34 Ce 0.85 Sm 0.15 O 1.925 –Sm 0.6 Sr 0.4 Al 0.3 Fe 0.7 O 3‐δ , 35 Ce 0.85 Sm 0.15 O 1.925 –Sr 2 Fe 1.5 Mo 0.5 O 6‐δ , 36 and Ce 0.85 Sm 0.15 O 1.925 –Sm 0.6 Sr 0.4 Cr 0.3 Fe 0.7 O 3‐δ , 38 exhibited outstanding stabilities. These materials may be appropriate for H 2 production in the IGCC process.…”

Section: Introductionmentioning

confidence: 99%

“…OTM reactors have been studied for different applications, such as partial oxidation of methane and other light alkanes, 26,27 oxidative dehydrogenation of alkanes, [28][29][30] methane aromatization, 31 and hydrogen separation/production. [32][33][34][35][36][37][38][39] Praxair Inc. has made great progress on the commercialization of the OTM reactor for the conversion of natural gas to syngas. They started a project to produce 9,940 N m 3 hr −1 syngas for a methanol plant using an OTM reactor in 2019.…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, previous studies have verified that the OTM reactor has good stability for hydrogen production under various atmospheres. [34][35][36][37][38] In this article, our experimental results show that this novel OTM reactor with nonprecious metal catalysts shows promising results in converting syngas to water and CO 2 , with hydrogen production rates comparable to state-of-the-art Pd-based composite membranes, high hydrogen separation selectivity (separation factor 10 3 -10 4 ), and stable performance in an environment containing H 2 , H 2 O(g), CO, CO 2 , and 1,000 ppm H 2 S. These results indicate that the developed OTM reactor is possible to be used in the IGCC-OTM process.…”

Section: Introductionmentioning

confidence: 99%

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High‐performance oxygen transport membrane reactors integrated with IGCC for carbon capture

Cai

Zhu

et al. 2020

AIChE Journal

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Precombustion carbon capture is an effective strategy to reduce large‐scale CO2 emissions, which is mainly used in the area of integrated gasification combined cycle (IGCC) power plants. Oxygen transport membranes (OTMs) were suggested as the air separation unit to produce high purity oxygen for the gasifier. However, the improvement in efficiency was limited. Here, a new IGCC process is reported based on a robust OTM reactor, where the OTM reactor is used behind the coal gasifier. This IGCC‐OTM process fulfills syngas oxidation, H2 production, and carbon capture in one unit, thus a significant decrease of the energy penalty is expectable. The membrane reactor does not use noble metal components, and exhibits high hydrogen production rates, high hydrogen separation factor (103–104), and stable performance in a gas mixture mimicking real syngas compositions from a coal gasifier with H2S concentrations up to 1,000 ppm.

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Effect of Phase Ratio on Hydrogen Separation of Dual‐phase Membrane Reactors

Wang

Cai

Liang

et al. 2021

Chemie Ingenieur Technik

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Dedicated to Prof. Dr. rer. nat. Ju ¨rgen Caro on the occasion of his 70th birthday Three dual-phase MIEC membranes (100x) wt % Ce 0.8 Sm 0.2 O 1.9 (SDC)x wt % Sr 0.92 Ti 0.5 Fe 0.5 O 3-d (STF) (x = 30, 40, 50) were prepared by a one-pot solid state reaction to explore the effect of phase ratio of dual-phase membranes on the hydrogen separation performance of oxygen-permeable membrane reactors. Single-phase STF was synthesized by the same method for comparison. The grains of the two phases in the three dual-phase membranes are uniformly and continuously distributed forming the three-dimensional connected networks. Dual-phase membranes have higher total conductivity than that of STF under simulated working atmospheres, and the total conductivity decreases with the increase of STF content. Under various test conditions, the hydrogen separation rate of the dual-phase membranes is higher than that of the STF membrane.

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Non-noble metal catalysts coated on oxygen-permeable membrane reactors for hydrogen separation

Cited by 26 publications

References 46 publications

Roadmap for Sustainable Mixed Ionic‐Electronic Conducting Membranes

Roadmap for Sustainable Mixed Ionic‐Electronic Conducting Membranes

High‐performance oxygen transport membrane reactors integrated with IGCC for carbon capture

Effect of Phase Ratio on Hydrogen Separation of Dual‐phase Membrane Reactors

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