Catalyst evaluation on a detroit diesel Allison 6V-92TA methanol-fueled engine

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

OSTI ID:5167224

Warburton, R C; McCabe, R W; Mitchell, P J; Lipari, F; Scruggs, W F

The fresh catalytic activities of both a production Pt-Pd catalyst and a GMR Pd-promoted Ag catalyst were evaluated in back-to-back emissions tests on an experimental Detroit Diesel Allison (DDA) 6V-92TA methanol-fueled engine. Both the 13-mode steady-state and transient heavy-duty diesel engine Federal Test Procedures were employed. The production catalyst was characterized by relatively high conversions (70-90%) of unburned methanol and carbon monoxide in both the transient and 13-mode tests. However, the production catalyst promoted the partial oxidation of unburned methanol to formaldehyde, as indicated by large negative apparent conversions of formaldehyde in both the transient and steady-state tests (-77% transient; -188% 13-mode). In contrast, the Pd-promoted Ag catalyst converted formaldehyde with good efficiency (--90% in the 13-mode test and --50% in the hot transient test) but was much less efficient than the production catalyst for converting unburned methanol and carbon monoxide.

• OSTI ID: 5167224
• Report Number(s): CONF-871142-
• Country of Publication: United States
• Language: English

Related Subjects

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Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
ALCOHOLS
ALDEHYDES
ALLOYS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC CONVERTERS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CONTROL
DIESEL ENGINES
DIESEL FUELS
EMISSION
ENGINES
EQUIPMENT
FORMALDEHYDE
FUEL SUBSTITUTION
HEAT ENGINES
HYDROXY COMPOUNDS
INTERNAL COMBUSTION ENGINES
KINETICS
METHANOL
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM ALLOYS
PERFORMANCE
PETROLEUM PRODUCTS
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
REACTION KINETICS
SILVER ALLOYS