Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1985-05-28
1986-07-22
Metz, Andrew H.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502257, 502439, 4232135, B01J 2300
Patent
active
046019995
ABSTRACT:
A metal support for a catalyst is disclosed, which is suitable for use in a catalytic converter for an automobile. The support generally does not interact with the catalyst, even at high temperatures, and the catalyst therefore retains its activity for a long period. The support includes a base metal containing chromium, aluminum and silicon, the remainder of the base metal being mostly iron. The specific percentages of chromium, aluminum, and silicon in the base metal can be varied according to a formula. The base metal is coated with a layer of metallic aluminum. A catalyst is applied to the support, preferably by first coating the support with a layer of alumina, and then impregnating the alumina layer with a suitable combustion catalyst. The support can be rolled down to foil thickness. When formed as a foil, the support is particularly useful in making catalytic converters for automobiles. The formula disclosed shows how aluminum or silicon can be substituted for some of the chromium in the base metal. The invention therefore provides a catalyst support of relatively low cost.
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Dunbar F. Curtiss
Retallick William B.
Eilberg William H.
Metz Andrew H.
Myers Helane
Retallick William B.
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