Methane partial oxidation using Ni/Ce0.9Zr0.1O2 catalysts

Larrondo, Susana Adelina; Kodjaian, Armen; Fábregas, Ismael Oscar; Zimicz, Maria Genoveva; Lamas, Diego G.; Reca, B.E. Walsöe de; Amadeo, Norma

doi:10.1016/j.ijhydene.2008.04.025

Cited by 40 publications

(24 citation statements)

References 24 publications

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“…H 2 and CO were found to be formed from the complete oxidation products H 2 O and CO 2 at the elevated operating temperature. In a following study [120], Ni-Ce 0.9 Zr 0.1 O 2 catalyst anodes were shown to be active for complete methane oxidation at low temperatures, but to mainly produce H 2 and CO at temperatures above 550 °C.…”

Section: Anode Materialsmentioning

confidence: 94%

Single-Chamber Solid Oxide Fuel Cell Technology—From Its Origins to Today’s State of the Art

2010

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Abstract:In single-chamber solid oxide fuel cells (SC-SOFCs), both anode and cathode are situated in a common gas chamber and are exposed to a mixture of fuel and oxidant. The working principle is based on the difference in catalytic activity of the electrodes for the respective anodic and cathodic reactions. The resulting difference in oxygen partial pressure between the electrodes leads to the generation of an open circuit voltage. Progress in SC-SOFC technology has enabled the generation of power outputs comparable to those of conventional SOFCs. This paper provides a detailed review of the development of SC-SOFC technology.

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Section: Anode Materialsmentioning

confidence: 94%

Single-Chamber Solid Oxide Fuel Cell Technology—From Its Origins to Today’s State of the Art

2010

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“…Zirconia [46], lanthana [47], ceria [48] and ceria-zirconia [49] oxides have been recently reported as promoters of methane reforming reactions. Incorporation of a 5 wt% ZrO 2 to a base Ni/SiO 2 catalyst resulted in excellent performance for the CPO reaction O 2 mixture in a fluidized-bed reactor.…”

Section: Promotersmentioning

confidence: 99%

“…It has been argued that ZrO 2 could promote the dispersion of Ni on the silica substrate, which has a direct effect on its reduction behaviour, CO 2 adsorption and catalytic performance [46]. For Ni/Ce-Zr catalysts with Niloadings between 9 and 50 wt%, Larrondo et al [49] showed that the reduction of nickel species into the metal phase is necessary for the CPO reaction to occur otherwise the catalysts behave mainly as combustion catalysts. If catalysts were prereduced prior to reaction, they oxidize selectively CH 4 into syngas at lower temperatures, in a range where the oxidized catalysts only produce CO 2 and H 2 O.…”

Section: Promotersmentioning

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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“…Under similar conditions, the results were very close to those reported by Wang and Xu [103] and Pengpanich et al [104] over 10 and 15 wt% Ni supported on Ce0.25Zr0.75O2 obtained using AMCP and UH methods respectively. Larrondo et al [105] examined the performance of Ni supported on Ce0.9Zr0.1O2 in CPOM using O2/C 0.5 from 400 to 800 °C. They found the bare Ce0.9Zr0.1O2 support could be utilized as methane oxidation catalyst.…”

Section: Catalytic Partial Oxidation Of Methane (Cpom)mentioning

confidence: 99%

Hydrogen production from simple alkanes and oxygenated hydrocarbons over ceria–zirconia supported catalysts: Review

Nahar

Dupont

2014

Renewable and Sustainable Energy Reviews

102

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The use of ceria-zirconia based catalysts in hydrogen production from simple alkanes and oxygenated hydrocarbons for the processes of steam reforming (SR), autothermal reforming ('ATR'), catalytic partial oxidation ('CPO'), and dry reforming ('DR') are reviewed in this paper. Along with preparation methods, the effects of operating conditions like molar steam to carbon ratio, oxygen to carbon ratio, and temperature on the performance of hydrogen production from methane, acetic acid, ethanol, and glycerol were examined. SR and ATR of these feedstocks over ceria-zirconia supports have been widely investigated. In comparison the utilization of these supports in the CPO and DR processes has been investigated mainly for methane as compared to oxygenated hydrocarbons. Ce-rich supports were reported to be effective in hydrogen from SR and ATR of ethanol and glycerol and in SMR in the 'low' temperature range (500-600 °C), whereas zirconium-rich supports exhibited higher catalytic activity in the 'high' temperature range (700-800 °C). In the case of DR, Ce-rich supports were effective at high temperature. The methods of preparation of the supports/catalyst are shown to affect the surface area (catalyst/support), crystallite size of (active metal/support), reducibility and dispersion of the active metal, thus affecting performance of the catalyst.

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Methane partial oxidation using Ni/Ce0.9Zr0.1O2 catalysts

Cited by 40 publications

References 24 publications

Single-Chamber Solid Oxide Fuel Cell Technology—From Its Origins to Today’s State of the Art

Single-Chamber Solid Oxide Fuel Cell Technology—From Its Origins to Today’s State of the Art

Recent Developments in the Partial Oxidation of Methane to Syngas

Hydrogen production from simple alkanes and oxygenated hydrocarbons over ceria–zirconia supported catalysts: Review

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