Formation of nitric acid in the gas-phase HO2 + NO reaction: effects of temperature and water vapor.

@article{Butkovskaya2005FormationON,
  title={Formation of nitric acid in the gas-phase HO2 + NO reaction: effects of temperature and water vapor.},
  author={N I Butkovskaya and Alexandre Kukui and Nicolas Pouvesle and Georges Le Bras},
  journal={The journal of physical chemistry. A},
  year={2005},
  volume={109 29},
  pages={6509-20}
}
A high-pressure turbulent flow reactor coupled with a chemical ionization mass spectrometer was used to investigate the minor channel (1b) producing nitric acid, HNO3, in the HO2 + NO reaction for which only one channel (1a) is known so far: HO2 + NO --> OH + NO2 (1a), HO2 + NO --> HNO3 (1b). The reaction has been investigated in the temperature range 223-298 K at a pressure of 200 Torr of N2 carrier gas. The influence of water vapor has been studied at 298 K. The branching ratio, k1b/k1a, was… CONTINUE READING