Reaction Rate Constants of OH, O3, NO3 with Hydrocarbons and Aldehydes

1 Reaction Rate Constants of OH, O3, NO3 with Hydrocarbons and Aldehydes 

As seen in Table 7.2,03 and NO3 have large rate constants for alkenes, and they increase with the number of carbons. It is characteristic that the difference in rate constants are largely dependent on molecular structure, even though the carbon number is the same. As discussed in Sects. 5.4.3 and 5.5.3 in Chap. 5, these 

Aldehydes do not react with O3, but they have relatively large rate constants with OH and NO3, and their rate constants are in between the C2H4 and C3H6, as seen in 

As for the correlation between the rate constants of VOCs with OH, O3 and NO3 and molecular parameters, it has been reported that the rate constants of OH and alkene reactions have good correlation with highest occupied molecular orbitals (HOMO) of the reacting molecules as mentioned in Sect. 5.2.8 (King et al. 1999). Pfrang et al. (2006) gives the correlation formulas between the reaction rate constants for each of OH, O3 and NO3 and HOMO energy based on recently obtained quantum chemical calculations. 

---