Rate constants for the gas-phase reactions of cyclo-CXCXCF₂CF₂- (X = H, F) with OH radicals at a temperature range of 253-328 K

详细信息    查看全文

• 作者：Xiaoqing Jia^a ; ^b ; Liang Chen^a ; ^{l-chen@aist.go.jp} ; Junji Mizukado^a ; Shuzo Kutsuna^a ; Kazuaki Tokuhashi^a
• 刊名：Chemical Physics Letters
• 出版年：2013
• 出版时间：30 May, 2013
• 年：2013
• 卷：572
• 期：Complete
• 页码：21-25
• 全文大小：581 K

文摘

Using a relative rate method, rate constants of cyclo-CFCFCF₂CF₂-, cyclo-CHCFCF₂CF₂-, and cyclo-CHCHCF₂CF₂- reaction with OH radicals were determined to be (3.15 ¡À 0.93) ¡Á 10^?13 exp[(630 ¡À 90)/T], (4.60 ¡À 1.31) ¡Á 10^?13 exp[(600 ¡À 80)/T], and (3.28 ¡À 0.57) ¡Á 10^?13 exp[(190 ¡À 50)/T] between 253 and 328 K, and (3.79 ¡À 0.11) ¡Á 10^?14, (6.15 ¡À 0.16) ¡Á 10^?14, and (1.73 ¡À 0.03) ¡Á 10^?13 cm³ molecule^?1 s^?1 at 298 K. The atmospheric lifetimes and GWPs for the 100 year time horizon were estimated to be 1.02, 0.63, and 0.19 years, and 119, 76, and 20.