Record Display for the EPA National Library Catalog


Main Title Effect of hydrocarbon composition on oxidant-hydrocarbon relationships : phase I. exhaust blends from non-catalyst and catalyst equipped vehicles /
Author Powers, T. R.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1977
Report Number PB273014; EPA-600/3-77-109a; EPA-68-02-1719
Stock Number PB-273 014
OCLC Number 52420554
Subjects Hydrocarbons ; Photochemical smog ; Motor vehicles--Motors--Exhaust gas
Additional Subjects Air pollution ; Oxidizers ; Automobiles ; Hydrocarbons ; Exhaust emissions ; Nitrogen oxides ; Oxidation ; Concentration(Composition) ; Test chambers ; Ozone ; Numerical analysis ; Graphic methods ; Comparisons ; Reaction kinetics ; Catalytic reactors(Exhaust systems)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-3-77-109a c.1 Headquarters Library/Washington,DC 01/27/2014
ELBD ARCHIVE EPA 600-3-77-109a Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 600-3-77-109a repository copy AWBERC Library/Cincinnati,OH 10/17/2014
ESAD  EPA 600-3-77-109A Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-273 014 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 151 p. : ill. ; 28 cm.
Oxidation catalysts on automobiles not only reduce the total amount of hydrocarbon emissions, but also change the composition of these emissions significantly. To explore the effect of this change on oxidant formation, 28 ten-hour irradiations were carried out in the Exxon Research Environmental Chamber. Fourteen of these irradiations used a hydrocarbon blend representative of the non-methane, non-acetylene exhaust hydrocarbon emissions from a non-catalyst equipped vehicle, and 14 used a blend representative of the same fraction of the emissions from a catalyst equipped vehicle. Irradiations were carried out at three hydrocarbon-to-nitrogen oxides ratios and with three modes of chamber operation, chosen to simulate different meteorological conditions. The results of these experiments indicate that the composition change due to oxidation catalysts will result in a significant alleviation, above that due to hydrocarbon concentration change alone, of the local effects of automotive tailpipe emissions.
"EPA-600/3-77-109a." "September 1977." PB 273 014--NTIS.