Oxygenates in exhaust gases subjected to catalytic or thermal conversion

Technical Report · Thu May 01 04:00:00 EDT 1975

OSTI ID:7317889

Seizinger, D E

Exhaust oxygenates and other engine emissions were measured from vehicles equipped with three different low-emission systems: (1) oxidation catalyst, (2) oxidation-reduction catalyst, and (3) lean thermal reactor. Measurements were made following the CVS-72 test procedure using three fuels having different aromatic contents. Tests were run at two temperatures on a chassis dynamometer housed in an environmentally controlled space. Exhaust emissions were analyzed using gas chromatography and other established routine emission procedures. In general, the aldehyde levels were higher than those of the other oxygenates measured. The aldehyde levels for the vehicle equipped with the oxidation catalyst were slightly lower than levels from the system equipped with the oxidation-reduction catalyst, and both were much lower than that from the lean thermal reactor. Nitromethane and total aldehyde levels were similar in the oxidation catalyst treated exhaust; whereas, the nitromethane was significantly lower than the total aldehyde levels in the thermal reactor and oxidation reduction catalyst treated exhaust. Little or no effect on oxygenate emissions was attributable to fuel consumption or ambient temperature.

• Research Organization: Energy Research and Development Administration, Bartlesville, OK (USA). Bartlesville Energy Research Center
• OSTI ID: 7317889
• Report Number(s): BERC/RI-75/1
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330704* -- Emission Control-- Hydrocarbons
AFTERBURNERS
ALDEHYDES
AUTOMOBILES
CATALYTIC CONVERTERS
CHEMICAL COMPOSITION
EQUIPMENT
EXHAUST GASES
GASEOUS WASTES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
TEMPERATURE DEPENDENCE
TESTING
VEHICLES
WASTES