Accession Number : ADA077323
Title : Catalysts for the Oxidation of Carbon Monoxide at Low Temperatures.
Descriptive Note : Interim rept.,
Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC
Personal Author(s) : Musick ,J k ; Williams,F W
Report Date : 21 Nov 1979
Pagination or Media Count : 28
Abstract : Four catalysts (hopcalite, Whetlerite, a supported palladium, and a supported platinum) were tested for efficiency in promoting the oxidation of carbon monoxide (CO). At room temperature and 50% RH, hopcalite has no catalytic capability and platinum has practically none. At room temperature and 15% RH, hopcalite is superior to platinum in catalyzing the oxidation of CO. Hopcalite is more efficient than either of the other three catalysts in the 52 to 66 C (125 to 150 F) temperature range at both humidities. Platinum and palladium are superior to both hopcalite and Whetlerite at both humidities in the 113 to 135 C (235 to 275 F) temperature range. Higher humidity decreases the CO-oxidizing capabilities of hopcalite and Whetlerite but does not do so for platinum and palladium. Whetlerite is in the lower-performing group of catalysts under all except one of the different conditions used in the tests. For the hopcalite, palladium, and platinum catalysts there is a temperature below 135 C (275 F) and above 68 C (155 F) at which CO can be oxidized efficiently.
Descriptors : *OXIDATION , *CATALYSTS , *CARBON MONOXIDE , TEMPERATURE , LOW TEMPERATURE , HIGH TEMPERATURE , ROOM TEMPERATURE , PLATINUM , CATALYSIS , PALLADIUM , HUMIDITY
Subject Categories : Physical Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE