Process of forming platinum coating catalyst layer in moisture-generating reactor
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United States of America Patent
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Sep 29, 2009
Grant Date -
Jul 21, 2005
app pub date -
Oct 14, 2003
filing date -
Oct 16, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A barrier film which has uniform thickness and excellent adhesiveness to the base material and superbly functions to protect a platinum film can be formed on the inner wall surface of a moisture-generating reactor at ease and at a low cost. The moisture-generating reactor in which hydrogen and oxygen are reacted to generate moisture without high temperature combustion is made of an alloy containing aluminum. A principally aluminum oxide (Al.sub.2O.sub.3)-composed barrier film is formed by applying an aluminum selective oxidation treatment on the inner wall surface of the moisture-generating reactor, and thereafter a platinum film is stacked on and stuck to the barrier film so that a platinum coating catalyst layer is formed.
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