Catalyst – solid sorbent – or support therefor: product or process – Miscellaneous
Reexamination Certificate
2008-06-25
2011-10-11
Mayes, Melvin (Department: 1732)
Catalyst, solid sorbent, or support therefor: product or process
Miscellaneous
C502S349000, C502S355000, C423S352000, C423S610000, C423S624000
Reexamination Certificate
active
08034743
ABSTRACT:
To provide a method of production of an exhaust gas purification catalyst support preventing a drop in the heat resistance of alumina or other catalyst support due to the presence of titania and provided with a sulfur poisoning suppression action by titania and an exhaust gas purification catalyst support produced by the same. A method of production of an exhaust gas purification catalyst support comprising, in a basic solution, making alumina particles adsorb ammonium ions and then bringing titania sol into contact with the alumina particle so as to make the alumina particles adsorb the titania particles. An exhaust gas purification catalyst support where at least base points on the alumina particle surfaces adsorb titania particles and the pH does not rise when immersed in an ammonium nitrate solution.
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Koyama Akio
Takeshima Shinichi
Finnegan Henderson Farabow Garrett & Dunner LLP
Li Jun
Mayes Melvin
Toyota Jidosha & Kabushiki Kaisha
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