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Reactions of atomic nitrogen and atomic hydrogen with methylacetylene
Author(s) -
Solomon W. C.,
Homann K. H.,
Warnatz J. H.
Publication year - 1970
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550020603
Subject(s) - chemistry , hydrogen , hydrogen atom , radical , nitrogen , photochemistry , recombination , reaction rate constant , atom (system on chip) , kinetics , organic chemistry , group (periodic table) , biochemistry , physics , quantum mechanics , computer science , gene , embedded system
The reaction of nitrogen atoms with methylacetylene has been studied using a fast‐flow low‐pressure reactor coupled to a mass spctrometer by a nozzle‐beam sampling system. Hydrogen atom concentrations were measured by ESR analysis. Experimental second‐order rate constants for the consumption of N atoms, of C 3 H 4 , and for the formation of N 2 were determined in the temperature range of 283° to 485°K. Product profiles of all stable species and of hydrogen atoms and methyl radicals were obtained for different initial concentrations of the reactants. Two different reaction pathways can be distinguished: one provides for recombination of N atoms, and the second leads to the formation of cyano compounds and other hydrocarbons. Only the latter process is influenced by the addition of hydrogen atoms. Mechanisms for the two pathways are discussed.