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Study of the HNO + HNO and HNO + NO reactions by intracavity laser spectroscopy
Author(s) -
Cheskis S. G.,
Nadtochenko V. A.,
Sarkisov O. M.
Publication year - 1981
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.550131005
Subject(s) - chemistry , flash photolysis , torr , reaction rate constant , spectroscopy , analytical chemistry (journal) , photodissociation , laser , photochemistry , kinetics , organic chemistry , physics , quantum mechanics , thermodynamics , optics
Flash photolysis of CH 3 CHO and H 2 CO in the presence of NO has been investigated by the intracavity laser spectroscopy technique. The decay of HNO formed by the reaction HCO + NO → HNO + CO was studied at NO pressures of 6.8–380 torr. At low NO pressure HNO was found to decay by the reaction HNO + HNO → N 2 O + H 2 O. The rate constant of this reaction was determined to be k 1 = (1.5 ± 0.8) × 10 −15 cm 3 /s. At high NO pressure the reaction HNO + NO → products was more important, and its rate constant was measured to be k 2 = (5 ± 1.5) × 10 −19 cm 3 /s. NO 2 was detected as one of the products of this reaction. Alternative mechanisms for this reaction are discussed.