In-use catalyst surface area and its relation to HC conversion efficiency and FTP emissions
Surface area data, steady-state hydrocarbon conversion efficiency data, and hydrocarbon emissions results have been determined for catalysts collected by the U.S. Environmental Protection Agency from properly maintained 1981 and 1982 model year vehicles. Catalysts covered in this study were limited to those with three-way-plus-oxidation monolith technologies. Catalyst surface areas were measured using the BET method, conversion efficiencies were measured on an exhaust gas generator, and emissions results were determined using the Urban Driving Schedule of the Federal Test Procedure. Results indicate that correlation of catalyst surface area data with hydrocarbon conversion efficiency data and hydrocarbon emissions results is significant for the sample studied.
- Research Organization:
- CPSB, US EPA-MVEL
- OSTI ID:
- 7050092
- Report Number(s):
- CONF-861041-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330100* -- Internal Combustion Engines
330704 -- Emission Control-- Hydrocarbons
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
CATALYSTS
CATALYTIC CONVERTERS
CHEMICAL REACTIONS
COMBUSTION PRODUCTS
CONTROL
CORRELATIONS
EFFICIENCY
EMISSION
ENGINES
EQUIPMENT
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
MAINTENANCE
MEASURING METHODS
NATIONAL ORGANIZATIONS
ORGANIC COMPOUNDS
OXIDATION
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SAMPLING
SURFACE AREA
SURFACE PROPERTIES
US EPA
US ORGANIZATIONS
WASTES