Absolute rate parameters for the reaction of atomic hydrogen with carbonyl sulfide and ethylene episulfide

Autor:	J. H. Lee, L. J. Stief, R. B. Timmons
Rok vydání:	1977
Předmět:	Arrhenius equation Ethylene Hydrogen Inorganic chemistry General Physics and Astronomy chemistry.chemical_element Sulfuric acid Chemical kinetics chemistry.chemical_compound symbols.namesake Reaction rate constant chemistry symbols Physical and Theoretical Chemistry Episulfide Carbonyl sulfide
Zdroj:	The Journal of Chemical Physics. 67:1705-1709
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.435005
Popis:	Absolute rate constants for the reaction of atomic hydrogen with carbonyl sulfide H+OCS→SH+CO (1) and ethylene episulfide H+C2H4S→SH+C2H4 (2) have been determined using the flash photolysis–resonance fluorescence technique. Under conditions where secondary reactions are avoided, rate constants for the carbonyl sulfide reaction over the temperature range 261 to 500 K gave the Arrhenius expression k1= (9.06±1.53) ×10−12 exp(−3850±110/1.987T) cm3 molecule−1 s−1. The corresponding Arrhenius expression for the ethylene episulfide reaction over the temperature range 223 to 423 K is k2= (2.87±0.12) ×10−11 exp(−1880±24/1.987T) cm3 molecule−1 s−1. These results are discussed, comparisons made with previous work, and implications considered for a model of the sulfuric acid aerosol clouds on the planet Venus.
Databáze:	OpenAIRE
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