High-temperature substrates and washcoats for auto exhaust emission control

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5136609

Kubsh, J E; Weissert, D J

The performance of a new monolith-type automobile exhaust catalyst is described. The catalyst under development employs a high-melting ceramic substrate (with about 200/sup 0/C margin over cordierite). The washcoat's performance was found to be sufficient to permit a reduction of the catalyst's volume by about 30% while still showing competitive performance versus a full-size commercial catalyst. Engine dynamometer and vehicle emission test data are discussed for illustration. The new ceramic has a higher density than cordierite; the paper discusses the effects of catalyst density on emission performance in the heat-up and cool-down portions of emission cycles. The results show no density penalty in FTP tests with the new ceramic.

• OSTI ID: 5136609
• Report Number(s): CONF-871142-
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
AUTOMOBILES
CATALYSTS
CATALYTIC EFFECTS
CERAMICS
COATINGS
CONTROL
DATA ANALYSIS
DENSITY
EMISSION
ENGINES
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
METERING
PERFORMANCE
PHYSICAL PROPERTIES
POLLUTION CONTROL
SUBSTRATES
THERMODYNAMICS
VEHICLES
WASTES