Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2006-10-31
2006-10-31
Silverman, Stanley S. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S302000, C502S305000, C502S324000, C502S325000, C502S344000, C502S349000, C502S353000, C502S355000, C502S527240, C502S304000
Reexamination Certificate
active
07129193
ABSTRACT:
This invention aims at providing a catalyst body exhibiting a lower degradation of a catalyst due to thermal durability and capable of keeping higher catalyst performance for a long time. A catalyst component such as Pt is directly supported by Zr, W, etc, replacing elements inside a support such as Al of cordierite to provide a catalyst body without forming a coating layer. A combination of the catalyst component and the element inside the support is selected so that support strength is greater than 5 eV by simulation using a density functional method. Coarsening of catalyst particles can be suppressed and a high-performance catalyst body excellent in thermal durability can be obtained.
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U.S. Appl. No. 09/546,227 pending.
Hasegawa Jun
Ito Miho
Kondo Tosiharu
Nakanishi Tomohiko
Nixon & Vanderhye P.C.
Silverman Stanley S.
Vanoy Timothy C.
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