Kinetics study of the gas-phase reactions of C2F5OC(O)H and n-C3F7OC(O)H with OH radicals at 253-328 K

被引:16
作者
Chen, L [1 ]
Kutsuna, S [1 ]
Tokuhashi, K [1 ]
Sekiya, A [1 ]
机构
[1] AIST, Tsukuba, Ibaraki 3058569, Japan
关键词
D O I
10.1016/j.cplett.2004.11.019
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The rate constants, k(1) and k(2) for the reactions of C2F5OC(O)H and n-C3F7OC(O)H with OH radicals were measured using an FT-IR technique at 253-328 K. k(1) and k(2) were determined as (9.24 +/- 1.33) x 10(-13) exp[-(1230 +/- 40)/T] and (1.41 +/- 0.26) x 10(-12) exp[-(1260 +/- 50)/T] cm(3) molecule(-1) s(-1). The random errors reported are +/-2 sigma, and potential systematic errors of 10% could add to the k(1) and k(2). The atmospheric lifetimes of C2F5OC(O)H and n-C3F7OC(O)H with respect to reaction with OH radicals were estimated at 3.6 and 2.6 years, respectively. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:563 / 568
页数:6
相关论文
共 11 条
[1]   Kinetics of the gas-phase reaction of CF3OC(O)H with OH radicals at 242-328 K [J].
Chen, L ;
Kutsuna, S ;
Tokuhashi, K ;
Sekiya, A .
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 2004, 36 (06) :337-344
[2]   New technique for generating high concentrations of gaseous OH radicals in relative rate measurements [J].
Chen, L ;
Kutsuna, S ;
Tokuhashi, K ;
Sekiya, A .
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 2003, 35 (07) :317-325
[3]  
DEMORE WB, 1997, JPL PUBL, V97
[4]   Atmospheric chemistry of n-C3F7OCH3:: Reaction with OH radicals and Cl atoms and atmospheric fate of n-C3F7OCH2O(•) radicals [J].
Ninomiya, Y ;
Kawasaki, M ;
Guschin, A ;
Molina, LT ;
Molina, MJ ;
Wallington, TJ .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2000, 34 (14) :2973-2978
[5]   Cl atom-initiated oxidation of three homologous methyl perfluoroalkyl ethers [J].
Nohara, K ;
Toma, M ;
Kutsuna, S ;
Takeuchi, K ;
Ibusuki, T .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2001, 35 (01) :114-120
[6]   Evidence for substantial variations of atmospheric hydroxyl radicals in the past two decades [J].
Prinn, RG ;
Huang, J ;
Weiss, RF ;
Cunnold, DM ;
Fraser, PJ ;
Simmonds, PG ;
McCulloch, A ;
Harth, C ;
Salameh, P ;
O'Doherty, S ;
Wang, RHJ ;
Porter, L ;
Miller, BR .
SCIENCE, 2001, 292 (5523) :1882-1888
[7]  
Sekiya A, 1996, CHEMTECH, V26, P44
[8]   Three-dimensional climatological distribution of tropospheric OH: Update and evaluation [J].
Spivakovsky, CM ;
Logan, JA ;
Montzka, SA ;
Balkanski, YJ ;
Foreman-Fowler, M ;
Jones, DBA ;
Horowitz, LW ;
Fusco, AC ;
Brenninkmeijer, CAM ;
Prather, MJ ;
Wofsy, SC ;
McElroy, MB .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2000, 105 (D7) :8931-8980
[9]  
Tokuhashi K, 1999, INT J CHEM KINET, V31, P846, DOI 10.1002/(SICI)1097-4601(1999)31:12<846::AID-KIN2>3.0.CO
[10]  
2-4