Kinetics and mechanism of gas-phase reactions of n-C4F9OCH3, i-C4F9OCH3, n-C4F9OC(O)H, and i-C4F9OC(O)H with OH radicals in an environmental reaction chamber at 253–328K
作者:L. Chen、T. Uchimaru、S. Kutsuna、K. Tokuhashi、A. Sekiya
DOI:10.1016/j.cplett.2011.08.049
日期:2011.10
The rate constants of the reactions of n-C4F9OCH3 (k1), i-C4F9OCH3 (k2), n-C4F9OC(O)H (k3), and i-C4F9OC(O)H (k4) with OH radicals were studied in an 11.5-dm3 environmental reaction chamber. k1 and k2 were determined to be (1.44 ± 0.33) × 10–12 exp[–(1450 ± 70)/T] and (1.59 ± 0.41) × 10–12 exp[–(1470 ± 80)/T] cm3 molecule–1 s–1 at 253–328 K. At 298 K, k3 and k4 were deduced to be (1.71 ± 0.32) × 10–14
的反应的速率常数Ñ -C 4 ˚F 9 OCH 3(ķ 1),我-C 4 ˚F 9 OCH 3(ķ 2),Ñ -C 4 ˚F 9 OC(O)H(ķ 3),和在11.5dm 3的环境反应室内研究了带有OH自由基的i -C 4 F 9 OC(O)H(k 4)。k 1和k 2被确定为(1.44±0.33)×10 –12 exp [–(1450±70)/ T ]和(1.59±0.41)×10 –12 exp [–(1470±80)/ T ] cm 3 分子–1 s –1在253–328K。在298 K时,k 3和k 4被推导为(1.71±0.32)×10 –14和(1.67±0.19)×10 –14 cm 3 分子–1 s –1。n -C 4 F 9 OCH 3与OH基反应的观察产物为n-C 4 F 9 OC(O)H,CF 3 CF 2 CF 2 C(O)F和COF 2以及用于i -C 4 F