Sulfate formation: catalyst and gas-phase composition effects in pulsators and comparison of three-way with oxidation catalysts

Conference · Wed Sep 01 04:00:00 EDT 1976 · Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States)

OSTI ID:7087841

Gandhi, H S; Otto, K; Piken, A G; Shelef, M

Studies were conducted to determine SO/sub 2/-SO/sub 3/ conversion by catalysts and explore the adaptability of pulse-flame combustors for studies of sulfate formation. It was found that the pulse-flame apparatus is suitable for the evaluation of sulfur dioxide conversion and produces results in qualitative accord with vehicle data. The suppressing effect of carbon monoxide on sulfur dioxide oxidation in simulated exhaust has been confirmed. Composition of the noble-metal catalysts has an influence on sulfur dioxide oxidation. Three-way catalysts are less active for sulfur dioxide oxidation than production oxidation catalysts. Catalytic oxidation of sulfur dioxide, being more demanding than that of carbon monoxide or of hydrocarbons, is more sensitive to increased space velocity and the deactivation processes associated with prolonged catalyst use. This is observed for both oxidation and three-way catalysts.

• Research Organization: Ford Motor Co., Dearborn, MI
• OSTI ID: 7087841
• Conference Information: Journal Name: Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States) Journal Volume: 21:4
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330703* -- Emission Control-- Sulfur Dioxide
500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
AUTOMOBILES
CATALYSTS
CATALYTIC CONVERTERS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTORS
ELEMENTS
EXHAUST GASES
GASEOUS WASTES
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
POLLUTION CONTROL EQUIPMENT
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFUR TRIOXIDE
TRANSITION ELEMENTS
VEHICLES
WASTES