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HERO ID
623205
Reference Type
Journal Article
Title
Theoretical study on NO3-initiated oxidation of acenaphthene in the atmosphere
Author(s)
Xiaohui, Q; Qingzhu, Z; Wenxing, W
Year
2008
Is Peer Reviewed?
Yes
Journal
Canadian Journal of Chemistry
ISSN:
0008-4042
EISSN:
1480-3291
Volume
86
Issue
2
Page Numbers
129-137
Abstract
Acenaphthene is widespread and toxic, and thus of substantial environmental concern. The reaction with NO3 radicals is an important atmospheric loss process of acenaphthene at night time. In this work, the mechanism for the NO3-initiated atmospheric oxidation reaction of acenaphthene has been studied using high level molecular orbital theory. Geometries of all the related species have been optimized at the MPWB1K level with the 6–31G(d,p) basis set. The single-point energy calculations have been carried out at the MPWB1K/6–311+G(3df,2p) level. The possible secondary reactions were also studied. Several energetically favorable reaction pathways were revealed for the first time.Key words: acenaphthene, NO3 radicals, reaction mechanism, product information, oxidation degradation. L’acénaphtène est toxique et très répandu et, d’un point de vue environnemental, il soulève donc beaucoup d’inquiétudes. La réaction des radicaux NO3 est un processus atmosphérique important de perte de l’acénaphtène durant la nuit. Dans ce travail, faisant appel àla théorie des orbitales molécules àun niveau élevé, on a étudié le mécanisme de la réaction d’oxydation atmosphérique de l’acénaphtène initiée par le NO3. Les géométries de toutes les espèces reliées ont été optimisées au niveau MPWBIK avec un ensemble de base 6-31G(d,p). Les calculs d’énergie ponctuelle ont été réalisés au niveau MPWB1K/6-311+G(3df,2p). On a aussi étudié les réactions secondaires potentielles. On a mis en évidence pour la première fois plusieurs voies réactionnelles énergétiquement favorables.Mots-clés : acénaphtène, radicaux NO3, mécanisme... [ABSTRACT FROM AUTHOR] Copyright of Canadian Journal of Chemistry is the property of NRC Research Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts)
Keywords
RADICALS (Chemistry); OXIDATION; ATMOSPHERE; MOLECULES; FORCE & energy; ORBITS; acenaphthene; oxidation degradation; product information; reaction mechanism; acénaphtène; dégradation par oxidation; information sur le produit; mécanisme réactionnel; radicaux NO3
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