Structured catalyst supports and catalysts for the methane indirect internal steam reforming in the intermediate temperature SOFC

Smorygo, Oleg; Mikutski, Vitali; Marukovich, Alexander; Vialiuha, Yuri; Ilyushchanka, A. Ph.; Mezentseva, Natalia; Alikina, G. M.; Vostrikov, Zakhar; Fedorova, Yulia E.; Pelipenko, Vladimir; Bunina, R. V.; Sadykov, Vladіslav

doi:10.1016/j.ijhydene.2009.09.079

Cited by 31 publications

(9 citation statements)

References 28 publications

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“…Catalysts supported on the metal alloy monolithic supports ensure effective heat transfer in reactors thus providing a uniform temperature distribution (both axial and radial), and this affects overall catalyst performance [1][2][3]. Low robustness of metallic catalyst supports due to corrosive degradation in the reaction media (600-900 ℃, water vapor, decomposition products of hydrocarbon, aggressive admixtures) limits their practical application [1,4]. This problem does not arise when the catalyst supports are made from various oxide ceramics exhibiting excellent corrosive resistance [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of SiC-porcelain ceramics as the material for monolithic catalyst supports

et al. 2014

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Mechanical and thermal properties of SiC-porcelain ceramics were studied in the wide SiC content range of 0-95%. Microstructure evolution, shrinkage at sintering, porosity, mechanical strength, elastic modulus, coefficient of thermal expansion (CTE) and thermal conductivity were studied depending on SiC content. The optimal sintering temperature was 1200 ℃, and the maximum mechanical strength corresponded to SiC content of 90%. Parametric evaluation of the ceramic thermal shock resistance revealed its great potential for thermal cycling applications. It was demonstrated that the open-cell foam catalyst supports can be manufactured from SiC-porcelain ceramics by the polyurethane foam replication process.

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Section: Introductionmentioning

confidence: 99%

Evaluation of SiC-porcelain ceramics as the material for monolithic catalyst supports

et al. 2014

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“…Catalytic tests were performed on bare foam pellets to elucidate whether the support itself was active under the operating conditions. The bare metal foam promoted the cracking of methane, yielding to the deposition of large amounts of carbon on the surface of the metal 70, 71. These results indicate the importance of the coating procedure to obtain an homogeneously covered material in order to avoid catalyst deactivation.…”

Section: Resultsmentioning

confidence: 91%

Combined Use of Synchrotron‐Radiation‐Based Imaging Techniques for the Characterization of Structured Catalysts

Basile

Benito

Bugani

et al. 2010

Adv Funct Materials

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Active-phase-coated metallic supports as structured catalysts are gaining attention in endothermic and exothermic processes because they improve heat transfer. The deposition of a well-adhered and stable catalyst layer on the metallic support constitutes an important feature for the successful application of the fi nal material. In this work, coating of FeCrAlY foams is performed by a one-step electrosynthesis-deposition of hydrotalcite-type compounds, precursors of catalysts active in endothermic steam methane reforming. The catalysts are studied at different length scales by using, for the fi rst time, a combination of several techniques: SEM/EDS and X-ray fl uorescence, X-ray powder diffraction and absorption-tomography experiments on the micro-and nanoscales at a synchrotron facility. The results show that the morphology of the coating depends on the synthesis conditions and that the catalyst may be described as Ni metal crystallites dispersed on γ -Al 2 O 3 , homogeneously coating the FeCrAlY foam.

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“…Ni-foam based substrates possessing high porosity, mechanical strength, good corrosion resistance and excellent electrical conductivity, mass produced by depositing nickel onto polymer foam followed by sintering it at high temperatures to remove polymer substrates, have been attracting increasing interest for their application as anode current collectors in intermediate-temperature SOFCs fueled by a wide range of natural and synthetic fuels. Open-cell metal foams made from Ni, Fe–Cr steel and Ni–Al intermetallide were shown to also be effective catalyst supports for internal indirect methane steam reforming in the intermediate temperature SOFC [ 97 , 98 ]. Surface modification of Ni foam can be performed using simple electrodeposition methods to increase its tolerance to carbon deposition and poisoning with H 2 S. Melnik et al in [ 99 ] used two electrodeposition techniques to fabricate ceria ceramic and copper/ceria composite coatings onto Ni foil/foam substrates: cathodic electrophoretic deposition from ceramic GDC powder suspensions based on ethanol, and electrolytic deposition from aqueous solutions of CuSO 4 ·5H 2 O and Ce(NO 3 ) 3 ·6H 2 O. Polyvinylbutyral-co-vinyl alcohol-co-vinyl acetate (PVB) and butoxyethyl acid phosphate (BAP) were used as a binder and dispersant for the EPD suspensions.…”

Section: Electrodeposition Methods For the Formation Of Sofc Ni-cermet Anodes And Modification Of Ni-foam-based Anode Collectorsmentioning

confidence: 99%

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

Калинина

Pikalova

2021

Materials

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Electrolytic deposition (ELD) and electrophoretic deposition (EPD) are relevant methods for creating functional layers of solid oxide fuel cells (SOFCs). This review discusses challenges, new findings and prospects for the implementation of these methods, with the main emphasis placed on the use of the ELD method. Topical issues concerning the formation of highly active SOFC electrodes using ELD, namely, the electrochemical introduction of metal cations into a porous electrode backbone, the formation of composite electrodes, and the electrochemical synthesis of perovskite-like electrode materials are considered. The review presents examples of the ELD formation of the composite electrodes based on porous platinum and silver, which retain high catalytic activity when used in the low-temperature range (400–650 °C). The features of the ELD/EPD co-deposition in the creation of nanostructured electrode layers comprising metal cations, ceramic nanoparticles, and carbon nanotubes, and the use of EPD to create oriented structures are also discussed. A separate subsection is devoted to the electrodeposition of CeO2-based film structures for barrier, protective and catalytic layers using cathodic and anodic ELD, as well as to the main research directions associated with the deposition of the SOFC electrolyte layers using the EPD method.

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Structured catalyst supports and catalysts for the methane indirect internal steam reforming in the intermediate temperature SOFC

Cited by 31 publications

References 28 publications

Evaluation of SiC-porcelain ceramics as the material for monolithic catalyst supports

Evaluation of SiC-porcelain ceramics as the material for monolithic catalyst supports

Combined Use of Synchrotron‐Radiation‐Based Imaging Techniques for the Characterization of Structured Catalysts

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

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