Rate constants for the reactions of OH radicals and Cl atoms with Di-n-Propyl ether and Di-n-Butyl ether and their deuterated analogs
✍ Scribed by Cheryl Harry; Janet Arey; Roger Atkinson
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 144 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
Using relative rate methods, rate constants for the gas-phase reactions of OH radicals and Cl atoms with di-n-propyl ether, di-n-propyl ether-d 14 , di-n-butyl ether and di-nbutyl ether-d 18 have been measured at 296 Ϯ 2 K and atmospheric pressure of air. The rate constants obtained (in cm 3 molecule Ϫ1 s Ϫ1 units) were: OH radical reactions, di-n-propyl ether, (2.18 Ϯ 0.17) ϫ 10 Ϫ11 ; di-n-propyl ether-d 14 , (1.13 Ϯ 0.06) ϫ 10 Ϫ11 ; di-n-butyl ether, (3.30 Ϯ 0.25) ϫ 10 Ϫ11 ; and di-n-butyl ether-d 18 , (1.49 Ϯ 0.12) ϫ 10 Ϫ11 ; Cl atom reactions, di-n-propyl ether, (3.83 Ϯ 0.05) ϫ 10 Ϫ10 ; di-n-propyl ether-d 14 , (2.84 Ϯ 0.31) ϫ 10 Ϫ10 ; di-n-butyl ether, (5.15 Ϯ 0.05) ϫ 10 Ϫ10 ; and di-n-butyl ether-d 18 , (4.03 Ϯ 0.06) ϫ 10 Ϫ10 . The rate constants for the din-propyl ether and di-n-butyl ether reactions are in agreement with literature data, and the deuterium isotope effects are consistent with H-atom abstraction being the rate-determining steps for both the OH radical and Cl atom reactions.