##  [C1C4 hydrocarbons with NO addition](/mechanisms/effect-of-no-addition-to-hydrocarbons/c1c4-hydrocarbons-with-no-addition) 

### CH4, C2H4, C2H6, C3H6, and C3H8, and NOx

The chemical kinetic mechanism was validated to describe the promotion effect of hydrocarbons (methane, ethane, ethene, propene, and propane) on NO to NO2 conversion in a atmospheric flow reactor. The NO level was 20 ppm and the hydrocarbon level was 50 ppm. The flow reactor temperature ranged from 600 to 1100 K.

Download files (CHEMKIN format):

- [Thermodynamic parameters](https://combustion.llnl.gov/sites/combustion/files/nox_therm.txt)
- [Chemical kinetic mechanism](https://combustion.llnl.gov/sites/combustion/files/2021-10/nox_mech.txt)

### Reference

Marinov, N. M., Pitz, W.J., Westbrook, C.K., Hori, M., and Matsunaga, N. "[An Experimental and Kinetic Calculation of the Promotion Effect of Hydrocarbons on the NO-NO2 Conversion in a Flow Reactor](https://combustion.llnl.gov/sites/combustion/files/2020-10/nox_paper.pdf)," Proceedings of the Combustion Institute, Volume **27**, pp. 389-396, 1998. (UCRL-JC-129372).