Effects of preadsorbed H2O and CH4on H2and he adsorption on activated carbon at cryogenic temperature

Satoshi Fukada; Makoto Ueda; Takaaki Izumi; G. O. Wu; Kazunari Katayama

doi:10.13182/FST12-A13581

Effects of preadsorbed H₂O and CH₄on H₂and he adsorption on activated carbon at cryogenic temperature

Satoshi Fukada, Makoto Ueda, Takaaki Izumi, G. O. Wu, Kazunari Katayama

Engineering Science for Advanced energy system

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

This research is performed to determine how gaseous impurities affect the evacuation of tritium from a fusion reactor chamber by using a cryosorption pump. The amounts of H₂O and CH₄ remaining on activated carbon during repeated cycles between adsorption for evacuation and desorption for regeneration are related to the partial pressures of the H₂O and CH₄ and to temperature and are correlated in terms of Henry's law. It is experimentally investigated how the impurities remaining on the activated carbon after rough evacuation by elevating the temperature affect the adsorption of H₂ and He at cryogenic temperature. The amount of CH₄ remaining on activated carbon is smaller than that of H₂O, and it was found that the former's effect is comparatively smaller than the latter's. Discussion is made based on the surface coverage and pore distribution that are determined by the BET measurement. An important conclusion is that the bulk of the H₂O and CH₄ can be released from activated carbon by heating to 373 K.

Original language	English
Pages (from-to)	282-289
Number of pages	8
Journal	Fusion Science and Technology
Volume	61
Issue number	4
DOIs	https://doi.org/10.13182/FST12-A13581
Publication status	Published - Jan 1 2012

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Nuclear and High Energy Physics
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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title = "Effects of preadsorbed H2O and CH4on H2and he adsorption on activated carbon at cryogenic temperature",

abstract = "This research is performed to determine how gaseous impurities affect the evacuation of tritium from a fusion reactor chamber by using a cryosorption pump. The amounts of H2O and CH4 remaining on activated carbon during repeated cycles between adsorption for evacuation and desorption for regeneration are related to the partial pressures of the H2O and CH4 and to temperature and are correlated in terms of Henry's law. It is experimentally investigated how the impurities remaining on the activated carbon after rough evacuation by elevating the temperature affect the adsorption of H2 and He at cryogenic temperature. The amount of CH4 remaining on activated carbon is smaller than that of H2O, and it was found that the former's effect is comparatively smaller than the latter's. Discussion is made based on the surface coverage and pore distribution that are determined by the BET measurement. An important conclusion is that the bulk of the H2O and CH4 can be released from activated carbon by heating to 373 K.",

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T1 - Effects of preadsorbed H2O and CH4on H2and he adsorption on activated carbon at cryogenic temperature

AU - Fukada, Satoshi

AU - Ueda, Makoto

AU - Izumi, Takaaki

AU - Wu, G. O.

AU - Katayama, Kazunari

PY - 2012/1/1

Y1 - 2012/1/1

N2 - This research is performed to determine how gaseous impurities affect the evacuation of tritium from a fusion reactor chamber by using a cryosorption pump. The amounts of H2O and CH4 remaining on activated carbon during repeated cycles between adsorption for evacuation and desorption for regeneration are related to the partial pressures of the H2O and CH4 and to temperature and are correlated in terms of Henry's law. It is experimentally investigated how the impurities remaining on the activated carbon after rough evacuation by elevating the temperature affect the adsorption of H2 and He at cryogenic temperature. The amount of CH4 remaining on activated carbon is smaller than that of H2O, and it was found that the former's effect is comparatively smaller than the latter's. Discussion is made based on the surface coverage and pore distribution that are determined by the BET measurement. An important conclusion is that the bulk of the H2O and CH4 can be released from activated carbon by heating to 373 K.

AB - This research is performed to determine how gaseous impurities affect the evacuation of tritium from a fusion reactor chamber by using a cryosorption pump. The amounts of H2O and CH4 remaining on activated carbon during repeated cycles between adsorption for evacuation and desorption for regeneration are related to the partial pressures of the H2O and CH4 and to temperature and are correlated in terms of Henry's law. It is experimentally investigated how the impurities remaining on the activated carbon after rough evacuation by elevating the temperature affect the adsorption of H2 and He at cryogenic temperature. The amount of CH4 remaining on activated carbon is smaller than that of H2O, and it was found that the former's effect is comparatively smaller than the latter's. Discussion is made based on the surface coverage and pore distribution that are determined by the BET measurement. An important conclusion is that the bulk of the H2O and CH4 can be released from activated carbon by heating to 373 K.

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Effects of preadsorbed H₂O and CH₄on H₂and he adsorption on activated carbon at cryogenic temperature

Abstract

All Science Journal Classification (ASJC) codes

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