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Titolo:
ULTRA-LOW TEMPERATURE KINETICS OF NEUTRAL-NEUTRAL REACTIONS - RATE CONSTANTS FOR THE REACTIONS OF OH RADICALS WITH BUTENES BETWEEN 295-K AND 23-K
Autore:
SIMS IR; SMITH IWM; BOCHEREL P; DEFRANCE A; TRAVERS D; ROWE BR;
Indirizzi:
UNIV BIRMINGHAM,SCH CHEM BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV RENNES 1,CNRS,UA 1203,DEPT PHYS ATOM & MOLEC F-35042 RENNES FRANCE
Titolo Testata:
Journal of the Chemical Society. Faraday transactions
fascicolo: 11, volume: 90, anno: 1994,
pagine: 1473 - 1478
SICI:
0956-5000(1994)90:11<1473:UTKONR>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION-MOLECULE REACTIONS; ELEMENTARY REACTIONS; CHEMICAL-REACTIONS; GAS-PHASE; PHOTODISSOCIATION; PRODUCT; CN; SPECTROSCOPY; DEPENDENCE; DYNAMICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
I.R. Sims et al., "ULTRA-LOW TEMPERATURE KINETICS OF NEUTRAL-NEUTRAL REACTIONS - RATE CONSTANTS FOR THE REACTIONS OF OH RADICALS WITH BUTENES BETWEEN 295-K AND 23-K", Journal of the Chemical Society. Faraday transactions, 90(11), 1994, pp. 1473-1478

Abstract

The first experiments on the kinetics of reactions of the OH radical at temperatures below 80 K are reported. They have been carried out byapplying the pulsed laser photolysis (PLP), laser-induced fluorescence (LIF) technique for studying the kinetics of free radical reactions in the ultra-cold environment provided by the gas flow in a CRESU (Cinetique de Reaction en Ecoulement Supersonique Uniforme) apparatus. This method has yielded rate constants for the reactions of OH with but-1-ene, (Z)-but-2-ene and (E)-but-2-ene at temperatures down to 23 K. The rate constants for all three reactions increase monotonically as thetemperature is lowered and this dependence of the rate constants on temperature can be fitted to an empirical expression of the form (k/10(-10) cm3 molecule-1 s-1) = a exp[b(T/298 K)] with a and b equal to 5.2and -2.8 for but-1-ene, 4.7 and -2.1 for (Z)-but-2-ene and 5.4 and -2.1 for (E)-but-2-ene.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/11/20 alle ore 21:40:46