Rates of reaction between the nitrate radical and some aliphatic ethers

✍ Scribed by Sarka Langer; Evert Ljungström

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 859 KB
• Volume: 26
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550260307

✦ Synopsis

Abstract

Rate coefficients for the reaction of NO~3~ with dimethyl ether, diethyl ether, di‐n‐propyl ether, and methyl t‐butyl ether (MTBE) have been determined. Absolute rates were measured at temperatures between 258 and 373 K using the fast flow‐discharge technique. Relative rate experiments were also made at 295 K in a reactor equipped with White optics and using FTIR spectroscopy to follow the reactions. The measured rate coefficients (in units of 10^−15^ cm^3^ molecule^−1^ s^−1^) at 295 K are: 0.26 ± 0.11, 2.80 ± 0.23, 6.49 ± 0.65, and 0.64 ± 0.06 for dimethyl ether, diethyl ether, di‐n‐propyl ether, and methyl t‐butyl ether, respectively. The corresponding activation energies are 21.0 ± 5.0, 17.2 ± 4.0, 15.5 ± 2.1, and 20.1 ± 1.7 kJ mole^−1^. The error limits correspond to the 95%‐confidence interval. © 1994 John Wiley & Sons, Inc.