Temperature dependence of the rate of reaction of ethynyl radical with hydrogen

Autor:	S. K. Farhat, G. P. Glass, C. L. Morter
Rok vydání:	1993
Předmět:	Ethynyl radical Radical Photodissociation General Engineering Analytical chemistry Atmospheric temperature range Chemical kinetics Reaction rate chemistry.chemical_compound Reaction rate constant chemistry Acetylene Physical chemistry Physical and Theoretical Chemistry
Zdroj:	The Journal of Physical Chemistry. 97:12789-12792
ISSN:	1541-5740 0022-3654
Popis:	The rates of reaction of C[sub 2]H with H[sub 2] and C[sub 2]H[sub 2] have been measured over the temperature range 295-854 K. The C[sub 2]H radical was produced by excimer laser photolysis of C[sub 2]H[sub 2] at 193 nm, and its transient absorption was monitored throughout the reaction by using a tunable infrared color-center laser. The temperature dependence of the rate constant for the reaction with H[sub 2] exhibited a non-Arrhenius form that could be well represented by the following expression: k = (9.44 [+-] 0.24) [times] 10[sup [minus]14]T[sup 0.9] exp([minus]1003 [+-] 20/T) cm[sup 3] molecule[sup [minus]1] s[sup [minus]1]. The rate constant for the reaction with C[sub 2]H[sub 2] displayed no definite temperature dependence. It was measured as (1.6 [+-] 0.3) [times] 10[sup [minus]10] cm[sup 3] molecule[sup [minus]1] s[sup [minus]1]. 22 refs., 4 figs., 2 tabs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0ab230fa0f37d5b6f373f10cdb133b7d https://doi.org/10.1021/j100151a026 Zobrazit plný text záznamu