Long-Term Permeator Experiment PETRA at the Tritium Laboratory Karlsruhe: Commissioning Tests with Tritium

Penzhorn, R.-D.; Berndt, U.; Kirste, E.; Hellriegel, W.; Jung, Woo-Chan; Pejša, R.; Römer, O.

doi:10.13182/fst95-a30490

Cited by 17 publications

(3 citation statements)

References 2 publications

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“…Hydrogen is produced at the cathode in Eq. (3). And under the wet air atmosphere, the generation mechanisms of the electron hole are expressed by the following defect equilibrium reaction: 19)…”

Section: Water Vapor Electrolysismentioning

confidence: 99%

Hydrogen Extraction Using One-end Closed Tube Made of CaZrO₃-based Proton-conducting Ceramic for Tritium Recovery System

Tanaka

Katahira²,

Asakura

et al. 2004

Journal of Nuclear Science and Technology

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In a nuclear fusion reactor, tritium and its compounds must be recovered for the purpose of fuel recycling and hydrogen gas must be separated from a gas mixture with hydrogen compounds and other molecules. Proton-conducting ceramics have the proper characteristics to aid in this separation. The present paper describes the performance of a hydrogen pump using the one-end closed tube made of a proton-conducting ceramic (CaZr 0:9 In 0:1 O 3À , Effective electrode area: 47 cm 2) at 800 C. Hydrogen gas was selectively extracted from Ar-H 2 mixed gas at the rate of Faraday's low under an applied voltage of 3.5 V. This test apparatus could also electrolyze water vapor and/or decompose methane at the anode to generate hydrogen at the cathode. In the case of argon gas with 0.1% hydrogen, 0.1% methane and 1.2% water vapor, the hydrogen evolution rate was 0.34 ml/min at 3.5 V. The current density was 1.2 mA/cm 2 and the current efficiency was 79%. Experimental data suggest that water vapor has an important role for the hydrogen extraction from the mixture with methane.

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Section: Water Vapor Electrolysismentioning

confidence: 99%

Hydrogen Extraction Using One-end Closed Tube Made of CaZrO₃-based Proton-conducting Ceramic for Tritium Recovery System

Tanaka

Katahira²,

Asakura

et al. 2004

Journal of Nuclear Science and Technology

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show abstract

“…For example, hydrogen permeable metal alloys have recently gained importance as membranes for hydrogen purification. Metal membranes are used to aid the recovery of gaseous hydrogen isotopes from fusion reactor exhaust [1][2][3][4][5][6][7][8]. The use of membranes has also been proposed to control the hydrogen isotope concentration in fusion reactors and to extract tritium from molten metal breeder reactor blankets [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Low and high-pressure hydriding of V–0.5at.%C

Lamb

Chandra

Coleman

et al. 2010

Journal of Nuclear Materials

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“…As for the recovery of highly pure hydrogen isotopes, the Pd-Ag membrane permeator is mainly used but it is expensive and requires high vacuum technology. It is also necessary to convert water vapor and methane to hydrogen using a catalytic 2,3) or electrochemical reactor. 4) An electrochemical hydrogen pump using a proton-conducting ceramic is a promising candidate for hydrogen separation.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Extraction Using One-end Closed Tube Made of CaZrO3-based Proton-conducting Ceramic for Tritium Recovery System

Tanaka

Katahira²,

Asakura

et al. 2004

J. Nucl. Sci. Technol.

View full text Add to dashboard Cite

In a nuclear fusion reactor, tritium and its compounds must be recovered for the purpose of fuel recycling and hydrogen gas must be separated from a gas mixture with hydrogen compounds and other molecules. Proton-conducting ceramics have the proper characteristics to aid in this separation. The present paper describes the performance of a hydrogen pump using the one-end closed tube made of a proton-conducting ceramic (CaZr 0:9 In 0:1 O 3À , Effective electrode area: 47 cm 2 ) at 800 C. Hydrogen gas was selectively extracted from Ar-H 2 mixed gas at the rate of Faraday's low under an applied voltage of 3.5 V. This test apparatus could also electrolyze water vapor and/or decompose methane at the anode to generate hydrogen at the cathode. In the case of argon gas with 0.1% hydrogen, 0.1% methane and 1.2% water vapor, the hydrogen evolution rate was 0.34 ml/min at 3.5 V. The current density was 1.2 mA/cm 2 and the current efficiency was 79%. Experimental data suggest that water vapor has an important role for the hydrogen extraction from the mixture with methane.

show abstract

Long-Term Permeator Experiment PETRA at the Tritium Laboratory Karlsruhe: Commissioning Tests with Tritium

Cited by 17 publications

References 2 publications

Hydrogen Extraction Using One-end Closed Tube Made of CaZrO₃-based Proton-conducting Ceramic for Tritium Recovery System

Hydrogen Extraction Using One-end Closed Tube Made of CaZrO₃-based Proton-conducting Ceramic for Tritium Recovery System

Low and high-pressure hydriding of V–0.5at.%C

Hydrogen Extraction Using One-end Closed Tube Made of CaZrO3-based Proton-conducting Ceramic for Tritium Recovery System

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