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US 7,732,369 B2Granted
Method and device for catalytic oxidation and reduction of gases and vapours by crystalline compounds of heavy metals and rare earths
OwnerChristian F. Kochinventor
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Abstract
The invention describes the production of a catalyst for use in the oxidation and selective reduction with properties resembling the catalytic property of the noble metal catalysts, by formation of a crystal surface on catalyst supports from a synthesis crystal of the elements of the rare earths and the metal components cobalt and/or lanthanum produced in multiple stages.
Claims9
A method for producing a catalyst complex using a multi-stage crystallization process comprising:
- adding a starting substance of a rare earth and a heavy metal at a stoichiometric ratio to form a first stage catalyst complex;
- forming a crystal layer on a support body with the first stage catalyst complex as a catalytically active substance in a multi-stage crystallization process;
- and
- distributing an amount of a second stage catalyst complex of a noble metal on the first stage catalyst complex.
1 more element
Dependencies are inferred from the claim text.