| Main Title |
Investigation of Hydroxyl Radical Reactions with o-Xylene and m-Xylene in a Continuous Stirred Tank Reactor (Journal Version). |
| Author |
Grey, M. W. ;
Fox, D. L. ;
Kamens, R. M. ;
Stockburger, L. ;
|
| CORP Author |
North Carolina Univ. at Chapel Hill. Dept. of Environmental Sciences and Engineering. ;Systems Applications, Inc., San Rafael, CA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| Publisher |
c1987 |
| Year Published |
1987 |
| Report Number |
EPA/600/J-87/444; |
| Stock Number |
PB89-110423 |
| Additional Subjects |
Xylenes ;
Air pollution ;
Hydroxyl radicals ;
Photochemical reactions ;
Smog ;
Aromatic monocyclic hydrocarbons ;
Reaction kinetics ;
Phenols ;
Formaldehyde ;
Nitro compounds ;
Gases ;
Ultraviolet radiation ;
Nitrous acid ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB89-110423 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
13p |
| Abstract |
The gas phase reactions of hydroxyl radicals with o-Xylene and m-Xylene were studied in a continuous stirred tank reactor. Gas and aerosol products accounted for 65 to 85 percent of the reacted carbon. Approximately 19 and 10 percent of the original o-Xylene and m-Xylene oxidation occurred through methyl hydrogen abstraction by OH, primarily leading to methylbenzyl nitrates and tolualdehydes. The remaining mass reacted through the OH addition pathway forming dimethylphenols, nitro-dimethylphenols, nitroxylenes and stable products resulting from further reaction of metastable 02-OH-adducts (including alpha-dicarbonyls, methyl-p-benzoquinones, CO and formaldehyde). For o-Xylene the ratio of reaction rate constants for formation of nitroxylenes versus dimethylphenols was estimated to be 59,000, while the same value for m-xylene was only about 10,000. The ratios of the dimethylphenol formation rates to the effective oxygen addition rates were found to be greater than or equal to 0.15 for o-Xylene and 0.27 for m-Xylene. These vary significantly from the approximations used in current photochemical kinetics models. |
| Supplementary Notes |
Pub. in Environmental Science and Technology, v21 n4 p339-348 Apr 87. Prepared in cooperation with Systems Applications, Inc., San Rafael, CA. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Investigation of Hydroxyl Radical Reactions with o-Xylene and m-Xylene in a Continuous Stirred Tank Reactor (Journal Version), |
| Category Codes |
68A; 99E |
| NTIS Prices |
Not available NTIS |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
836522774 |
| Origin |
NTIS |
| Type |
CAT |
