REACTION OF CH3O2 WITH SO2

被引:35
作者
SANHUEZA, E
SIMONAITIS, R
HEICKLEN, J
机构
[1] PENN STATE UNIV,IONOSPHERE RES LAB,UNIVERSITY PK,PA 16802
[2] PENN STATE UNIV,DEPT CHEM,UNIVERSITY PK,PA 16802
关键词
D O I
10.1002/kin.550110809
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
Mixtures of Cl2, CH4, and O2 were flash photolyzed at room temperature and pressures of ∽60–760 Torr to produce CH3O2. The CH3O2 radicals decay by the second‐order process (Formula Presented.) with k6 = (3.7 ± 0.3) × 10−13 cm3/sec in good agreement with other studies. This value ignores any removal by secondary radicals produced as a result of reaction (6), and therefore the true value might be as much as 30% lower. The value is independent of total pressure or the presence of H2O vapor. With SO2 also present, the CH3O2 decay becomes pseudo first order at sufficiently high SO2 pressure which indicates the reaction (Formula Presented.) The value of (8.2 ± 0.5) × 10−15 cm3/sec at about 1 atm total pressure (mostly CH4) was found for CH3O2 removal by SO2, in good agreement with another recent measurement. This value can be equated with k1, unless the products rapidly remove another CH3O2 radical, in which case k1 would be a factor of 2 smaller. Copyright © 1979 John Wiley & Sons, Inc.
引用
收藏
页码:907 / 914
页数:8
相关论文
共 12 条
[1]   FLASH-PHOTOLYSIS STUDY OF SPECTRA OF CH3O2 AND C(CH3)3O2 RADICALS AND KINETICS OF THEIR MUTUAL REACTIONS AND WITH NO [J].
ANASTASI, C ;
SMITH, IWM .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1978, 74 :1693-1701
[2]  
BURROWS JP, 1978, JUN WMO S GEOPH ASP
[3]  
COX RA, 1976, 61A COST TECHN S ISP
[4]  
COX RA, 1978, JUN WMO S GEOPH ASP
[5]   DEPENDENCE ON H2O AND ON NH3 OF KINETICS OF SELF-REACTION OF HO2 IN GAS-PHASE FORMATION OF HO2.H2O AND HO2.NH3 COMPLEXES [J].
HAMILTON, EJ ;
LII, RR .
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 1977, 9 (06) :875-885
[6]  
HOCHANADEL CJ, 1977, J PHYS CHEM, V91, P3
[7]  
KAN CS, INT J CHEM KINET
[8]   FTIR STUDIES OF KINETICS AND MECHANISM FOR REACTION OF CL ATOM WITH FORMALDEHYDE [J].
NIKI, H ;
MAKER, PD ;
BREITENBACH, LP ;
SAVAGE, CM .
CHEMICAL PHYSICS LETTERS, 1978, 57 (04) :596-599
[9]   OXIDATION OF METHYL RADICALS AT ROOM-TEMPERATURE [J].
PARKES, DA .
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 1977, 9 (03) :451-469
[10]   ULTRAVIOLET-ABSORPTION BY ALKYLPEROXY RADICALS AND THEIR MUTUAL REACTIONS [J].
PARKES, DA ;
PAUL, DM ;
QUINN, CP ;
ROBSON, RC .
CHEMICAL PHYSICS LETTERS, 1973, 23 (03) :425-429