Study of low hydrogen flows into high-vacuum systems

A study is made of a scheme providing spectrally pure, low hydrogen flows into a high-vacuum chamber through the use of a palladium membrane with a working surface of 20 cm 2 and ethyl alcohol vapors (scheme combining the processes of hydrogen generation and admission). It is demonstrated that at an...

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Bibliographic Details
Published in:International journal of hydrogen energy 1999-09, Vol.24 (9), p.829-831
Main Authors: Glazunov, G.P, Volkov, E.d, Baron, D.i
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Energy
Exact sciences and technology
Fuels
Hydrogen
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Summary:A study is made of a scheme providing spectrally pure, low hydrogen flows into a high-vacuum chamber through the use of a palladium membrane with a working surface of 20 cm 2 and ethyl alcohol vapors (scheme combining the processes of hydrogen generation and admission). It is demonstrated that at an optimum alcohol vapor pressure and a membrane temperature of 973 K this scheme can provide specific hydrogen flows of about 5×10 −2 Torr.l⧸s cm 2. The hydrogen permeability is limited in this case by the processes occurring at the entrance surface of the Pd-membrane.
ISSN:0360-3199
1879-3487
DOI:10.1016/S0360-3199(98)00154-2