Production of nitric oxide
AssigneeE. I. Du Pont de Nemours and Company
InventorTheodore A. Koch
Life of this patent
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Abstract
A process for the manufacture of nitric oxide by the Ostwald process where group VIII metal is recovered in a catchment trap, and the nitrous oxide is converted to nitrogen and oxygen by passing it through a bed of zirconium oxide at reaction temperature.
Claims8
A process for the manufacture of nitric oxide by oxidizing ammonia in which the amount of nitrous oxide, i.e., N.sub.2 O by-product is lowered, which comprises passing a gas stream containing ammonia and oxygen in contact with a catalyst containing a platinum group metal under conditions such that nitric oxide and nitrous oxide will be formed in the stream, then passing the stream in contact with a catchment trap where the platinum group metal oxide that was volatilized during the prior step is recovered, and then dispersing the stream through a bed consisting essentially of zirconium oxide where the stream contacts zirconium oxide and nitrous oxide in the stream is converted to nitrogen and oxygen.
A process for the manufacture of nitric oxide by oxidizing ammonia in which the amount of nitrous oxide, i.e., N.sub.2 O by-product is lowered, which comprises passing a gas stream containing ammonia and oxygen in contact with a catalyst containing a platinum group metal under conditions such that nitric oxide and nitrous oxide will be formed in the stream, then passing the stream in contact with a catchment trap where the platinum group metal oxide that was volatilized during the prior step is recovered, and then dispersing the stream through a bed that consists of pellets that are an inert substrate coated with zirconium oxide where the stream contacts zirconium oxide and nitrous oxide in the stream is converted to nitrogen and oxygen.
Dependencies are inferred from the claim text.