Investigation of the rate coefficient for O( 3 p ) + NO 2 → O 2 + NO

Measurements of the rate coefficient of the reaction (O 3 P ) + NO 2 → O 2 + NO have been made at 296°K and 240°K, using the technique of NO 2 * chemiluminescent decay. Values of 9.3 × 10 −12 cm 3 molec −1 sec −1 at 296°K and 10.5 × 10 −12 cm 3 molec −1 sec −1 at 240°K were obtained, in excellent agreement with the recent results of Davis, Herron, and Huie [1]. The earlier lower values may have resulted from loss of NO 2 on surfaces.