Catalyst composition for preparing hydroxylamine

Details Catalyst composition for preparing hydroxylamine Catalyst composition for preparing hydroxylamine

2009-05-27

2009-11-24

Mayes, Melvin C (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S325000, C502S333000, C502S334000, C564S300000

Reexamination Certificate

active

07622420

ABSTRACT:
This invention provides a catalyst composition for preparing hydroxylamine, which comprises palladium, a platinum compound, a germanium compound and a carrier, wherein a halogen concentration of the composition is no more than 10 ppm. The catalyst composition is prevented from poisoning by halogens, and therefore the catalyst composition has high selectivity and catalytic activity. Further, the weight ratio of palladium and platinum in the catalyst composition ranges from 100:1 to 1000:1, such that the catalyst composition can be used to solve the commonly observed problem, i.e., decreased selectivity due to the excessive amount of platinum.

REFERENCES:
patent: 4158047 (1979-06-01), van de Moesdijk et al.
patent: 5792439 (1998-08-01), van Lieshout et al.
patent: 7122501 (2006-10-01), Paparatto et al.
patent: 1387725 (1975-03-01), None
patent: WO 98/18717 (1998-05-01), None

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