Hydrogen production from methane by using oxygen permeable ceramics

Hitoshi Takamura; Yusuke Aizumi; Atsunori Kamegawa; Masuo Okada

Hydrogen production from methane by using oxygen permeable ceramics

Hitoshi Takamura, Yusuke Aizumi, Atsunori Kamegawa, Masuo Okada

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Oxygen permeable ceramics based on mixed conductors are attracting much attention for use in partial oxidation of hydrocarbons as a novel technique for syngas and pure hydrogen production. This paper describes the preparation and oxygen permeation properties including methane reforming property of a novel member of oxygen permeable ceramics. The materials used are solid solutions of (La_0.5Ba_0.3Sr_0.2)(Fe_xIn _1-x)O_3-δ. The single phase of perovskite-type (La_0.5Ba_0.3Sr_0.2)(Fe_xIn _1-x)O_3-δis obtained in the range of x = 0.4 to 0.9. The highest oxygen flux densities of 2.2 and 11 μmol/cm² s are attained for (La_0.5Ba_0.3Sr_0.2)(Fe _xIn_1-x)O_3-δ.(x = 0.6) at 1000°C under He / air and CH₄ / air gradients, respectively. The electrical conductivity of (La_0.5Ba_0.3Sr_0.2)(Fe _0.6In_0.4)O_3-δ. is dominated by p-type conduction having a slope of 1/4 under the high P(O₂) region. The oxide-ion conductivity of the same sample is estimated to be 0.05 S/cm at 800°C. Even though the oxygen flux density slightly decreases with increasing time, high CO selectivity of 90% is kept for 100 h. The oxygen flux density of the solid solution is also discussed in the context of surface exchange kinetics.

Original language	English
Title of host publication	Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005
Editors	R.K. Shah, E.U. Ubong, S.S. Samuelsen
Pages	593-599
Number of pages	7
Publication status	Published - 2005 Nov 22
Externally published	Yes
Event	3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005 - Ypsilanti, MI, United States Duration: 2005 May 23 → 2005 May 25

Publication series

Name	Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005

Other

Other	3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005
Country/Territory	United States
City	Ypsilanti, MI
Period	05/5/23 → 05/5/25

ASJC Scopus subject areas

Engineering(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

Takamura, H., Aizumi, Y., Kamegawa, A., & Okada, M. (2005). Hydrogen production from methane by using oxygen permeable ceramics. In R. K. Shah, E. U. Ubong, & S. S. Samuelsen (Eds.), Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005 (pp. 593-599). [FUELCELL-74173] (Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005).

Hydrogen production from methane by using oxygen permeable ceramics. / Takamura, Hitoshi; Aizumi, Yusuke; Kamegawa, Atsunori et al.

Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005. ed. / R.K. Shah; E.U. Ubong; S.S. Samuelsen. 2005. p. 593-599 FUELCELL-74173 (Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Takamura, H, Aizumi, Y, Kamegawa, A & Okada, M 2005, Hydrogen production from methane by using oxygen permeable ceramics. in RK Shah, EU Ubong & SS Samuelsen (eds), Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005., FUELCELL-74173, Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005, pp. 593-599, 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005, Ypsilanti, MI, United States, 05/5/23.

Takamura H, Aizumi Y, Kamegawa A, Okada M. Hydrogen production from methane by using oxygen permeable ceramics. In Shah RK, Ubong EU, Samuelsen SS, editors, Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005. 2005. p. 593-599. FUELCELL-74173. (Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005).

Takamura, Hitoshi ; Aizumi, Yusuke ; Kamegawa, Atsunori et al. / Hydrogen production from methane by using oxygen permeable ceramics. Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005. editor / R.K. Shah ; E.U. Ubong ; S.S. Samuelsen. 2005. pp. 593-599 (Proceedings of the 3rd International Conference on Fuel Cell Science, Engineering, and Technology, 2005).

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abstract = "Oxygen permeable ceramics based on mixed conductors are attracting much attention for use in partial oxidation of hydrocarbons as a novel technique for syngas and pure hydrogen production. This paper describes the preparation and oxygen permeation properties including methane reforming property of a novel member of oxygen permeable ceramics. The materials used are solid solutions of (La0.5Ba0.3Sr0.2)(FexIn 1-x)O3-δ. The single phase of perovskite-type (La0.5Ba0.3Sr0.2)(FexIn 1-x)O3-δis obtained in the range of x = 0.4 to 0.9. The highest oxygen flux densities of 2.2 and 11 μmol/cm2 s are attained for (La0.5Ba0.3Sr0.2)(Fe xIn1-x)O3-δ.(x = 0.6) at 1000°C under He / air and CH4 / air gradients, respectively. The electrical conductivity of (La0.5Ba0.3Sr0.2)(Fe 0.6In0.4)O3-δ. is dominated by p-type conduction having a slope of 1/4 under the high P(O2) region. The oxide-ion conductivity of the same sample is estimated to be 0.05 S/cm at 800°C. Even though the oxygen flux density slightly decreases with increasing time, high CO selectivity of 90% is kept for 100 h. The oxygen flux density of the solid solution is also discussed in the context of surface exchange kinetics.",

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N2 - Oxygen permeable ceramics based on mixed conductors are attracting much attention for use in partial oxidation of hydrocarbons as a novel technique for syngas and pure hydrogen production. This paper describes the preparation and oxygen permeation properties including methane reforming property of a novel member of oxygen permeable ceramics. The materials used are solid solutions of (La0.5Ba0.3Sr0.2)(FexIn 1-x)O3-δ. The single phase of perovskite-type (La0.5Ba0.3Sr0.2)(FexIn 1-x)O3-δis obtained in the range of x = 0.4 to 0.9. The highest oxygen flux densities of 2.2 and 11 μmol/cm2 s are attained for (La0.5Ba0.3Sr0.2)(Fe xIn1-x)O3-δ.(x = 0.6) at 1000°C under He / air and CH4 / air gradients, respectively. The electrical conductivity of (La0.5Ba0.3Sr0.2)(Fe 0.6In0.4)O3-δ. is dominated by p-type conduction having a slope of 1/4 under the high P(O2) region. The oxide-ion conductivity of the same sample is estimated to be 0.05 S/cm at 800°C. Even though the oxygen flux density slightly decreases with increasing time, high CO selectivity of 90% is kept for 100 h. The oxygen flux density of the solid solution is also discussed in the context of surface exchange kinetics.

AB - Oxygen permeable ceramics based on mixed conductors are attracting much attention for use in partial oxidation of hydrocarbons as a novel technique for syngas and pure hydrogen production. This paper describes the preparation and oxygen permeation properties including methane reforming property of a novel member of oxygen permeable ceramics. The materials used are solid solutions of (La0.5Ba0.3Sr0.2)(FexIn 1-x)O3-δ. The single phase of perovskite-type (La0.5Ba0.3Sr0.2)(FexIn 1-x)O3-δis obtained in the range of x = 0.4 to 0.9. The highest oxygen flux densities of 2.2 and 11 μmol/cm2 s are attained for (La0.5Ba0.3Sr0.2)(Fe xIn1-x)O3-δ.(x = 0.6) at 1000°C under He / air and CH4 / air gradients, respectively. The electrical conductivity of (La0.5Ba0.3Sr0.2)(Fe 0.6In0.4)O3-δ. is dominated by p-type conduction having a slope of 1/4 under the high P(O2) region. The oxide-ion conductivity of the same sample is estimated to be 0.05 S/cm at 800°C. Even though the oxygen flux density slightly decreases with increasing time, high CO selectivity of 90% is kept for 100 h. The oxygen flux density of the solid solution is also discussed in the context of surface exchange kinetics.

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ER -

Hydrogen production from methane by using oxygen permeable ceramics

Abstract

Publication series

Other

ASJC Scopus subject areas

UN SDGs

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