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Titolo:
THE HYDROXYL RADICAL REACTION-RATE CONSTANT AND ATMOSPHERIC TRANSFORMATION PRODUCTS OF 2-BUTANOL AND 2-PENTANOL
Autore:
BAXLEY JS; WELLS JR;
Indirizzi:
USAF,RES LAB,AFRL,MLQR,139 BARNES DR TYNDALL AFB FL 32403 USAF,RES LAB,AFRL,MLQR TYNDALL AFB FL 32403 APPL RES ASSOCIATES,GULF COAST DIV TYNDALL AFB FL 32403
Titolo Testata:
International journal of chemical kinetics
fascicolo: 10, volume: 30, anno: 1998,
pagine: 745 - 752
SICI:
0538-8066(1998)30:10<745:THRRCA>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAS-PHASE REACTIONS; ALIPHATIC-ALCOHOLS; ORGANIC-COMPOUNDS; METHYL NITRITE; KINETICS; OH; ETHER; MECHANISM; OXIDATION; NITRATE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
J.S. Baxley e J.R. Wells, "THE HYDROXYL RADICAL REACTION-RATE CONSTANT AND ATMOSPHERIC TRANSFORMATION PRODUCTS OF 2-BUTANOL AND 2-PENTANOL", International journal of chemical kinetics, 30(10), 1998, pp. 745-752

Abstract

The relative rate technique has been used to measure the hydroxyl radical (OH) reaction rate constant of +2-butanol (2BU, CH3CH2CH(OH)CH3) and 2-pentanol (2PE, CH3CH2CH2CH(OH)CH3). 2BU and 2PE react with OH yielding bimolecular rate constants of (8.1 +/- 2.0) X 10(-12) cm(3)molecule(-1)s(-1) and (11.9 +/- 3.0) X 10-12 cm(3)molecule(-1)s(-1), respectively, at 297 +/- 3 K and 1 atmosphere total pressure. Both 2BU and 2PE OH rate constants reported here are in agreement with previously reported values [1-4]. In order to more clearly define these alcohols' atmospheric reaction mechanisms, an investigation into the OH + alcohol reaction products was also conducted. The OH + 2BU reaction productsand yields observed were: methyl ethyl ketone (MEK, (60 +/- 2)%, CH3CH2C(=O)CH3) and acetaldehyde ((29 +/- 4)% HC(=O)CH3). The OH + 2PE reaction products and yields observed were: 2-pentanone (2PO, (41 +/- 4)%, CH3C(=O)CH2CH2CH3), propionaldehyde ((14 +/- 2)% HC(= O)CH2CH3), andacetaldehyde ((40 +/- 4)%, HC(=O)CH3). The alcohols' reaction mechanisms are discussed in light of current understanding of oxygenated hydrocarbon atmospheric chemistry. Labeled (O-18) 2BU/OH reactions were conducted to investigate 2BU's atmospheric transformation mechanism details. The findings reported here can be related to other structurally similar alcohols and may impact regulatory tools such as ground level ozone-forming potential calculations (incremental reactivity) Isl. (C) 1998 John Wiley C Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/05/20 alle ore 12:30:30