Absolute rate constants for F+ CH3CHO and CH3CO+ O2, relative rate study of CH3CO+ NO, and the product distribution of the F+ CH3CHO reaction

J Sehested, LK Christensen, OJ Nielsen…

Index: Sehested, Jens; Christensen, Lene K.; Nielsen, Ole J.; Wallington, Timothy J. International Journal of Chemical Kinetics, 1998 , vol. 30, # 12 p. 913 - 921

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Citation Number: 28

Abstract

Abstract Using a pulse-radiolysis transient UV–VIS absorption system, rate constants for the reactions of F atoms with CH 3 CHO (1) and CH 3 CO radicals with O 2 (2) and NO (3) at 295 K and 1000 mbar total pressure of SF 6 was determined to be k 1=(1.4±0.2)× 10− 10, k 2=(4.4±0.7)× 10− 12, and k 3=(2.4±0.7)× 10− 11 cm 3 molecule− 1 s− 1. By monitoring the formation of CH 3 C (O) O 2 radicals (λ> 250nm) and NO 2 (λ= 400.5 nm) following ...