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AssigneeHeraeus Precious Metals GmbH & Co. KG
InventorsJens HESSE, Dirk MAIER, Pascal HIRSCHEL, Uwe JANTSCH
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The present invention relates to a catalyst system comprising more than one catalyst network, wherein at least one of the catalyst networks contains at least one noble metal wire consisting of a binary PtRh alloy. The binary PtRh alloy consists of 3.4-4.6 wt. % of rhodium, impurities and the remainder platinum. The catalyst system does not comprise a catalyst network containing a noble metal wire made of a further binary PtRh alloy comprising more than 7 wt. % of rhodium. The invention also relates to a method for the catalytic oxidation of ammonia, in which a catalyst system according to the invention is used.
A catalyst system for the catalytic oxidation of ammonia, comprising more than one catalyst network, wherein at least one of the catalyst networks contains at least one noble metal wire consisting of a binary PtRh alloy, wherein the binary PtRh alloy of the at least one noble metal wire consists of 3.4-4.6 wt. % of rhodium, impurities and the remainder platinum, and in that the catalyst system does not comprise a catalyst network containing a noble metal wire made of a further binary PtRh alloy comprising more than 7 wt. % of rhodium.
Dependencies are inferred from the claim text.