Rate constants for the reaction of ozone with n-butyl, s-butyl and t-butyl methyl sulfides  

作　　者：WANG Kun DU Lin GE MaoFa 

机构地区：[1]Beijing National Laboratory for Molecular Sciences (BNLMS), and State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China [2]Graduate University of the Chinese Academy of Sciences, Beijing 100039, China

出　　处：《Chinese Science Bulletin》2008年第23期3620-3625,共6页

基　　金：Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KZCX2-YW-205);National Basic Research Program of China (973 Program) (Grant No. 2006CB403701);National Natural Science Foundation of China (Grant Nos. 20577052 and 20673123)

摘　　要：The rate constants for the ozone reactions with n-butyl methyl sulfide (n-BMS, CH3CH2CH2CH2SCH3), sec-butyl methyl sulfide (s-BMS, CH3CH2(CH3)CHSCH3) and tert-butyl methyl sulfide (t-BMS, (CH3)3CSCH3) were measured using our smog chamber under supposedly pseudo-first-order conditions at 300±2 K and 760 Torr. The experimental determined rate constants for n-butyl, s-butyl and t-butyl methyl sulfide are (1.23 ± 0.06)×10-19, (5.08 ± 0.19)×10?20 and (2.26 ± 0.14)×10?20 cm3·molecule-1·s-1, respectively. The reactivity-structure relationship of the reactions was discussed and used to illustrate the mechanism of the ozone reaction with thioethers. The results enrich the kinetics data of atmospheric chemistry.The rate constants for the ozone reactions with n-butyl methyl sulfide （n-BMS, CHaCH2CH2CH2SCH3）, sec-butyl methyl sulfide （s-BMS, CH3CH2（CH3）CHSCHa） and tert-butyl methyl sulfide （t-BMS, （CH3）3CSCH3） were measured using our smog chamber under supposedly pseudo-first-order conditions at 30002 K and 760 Torr. The experimental determined rate constants for n-butyl, s-butyl and t-butyl methyl sulfide are （1.23 ± 0.06）×10-19, （5.08 ± 0.19）×10-20 and （2.26 ± 0.14）×10-20 cm3 molecule-1· s-1, respectively. The reactivity-structure relationship of the reactions was discussed and used to illustrate the mechanism of the ozone reaction with thioethers. The results enrich the kinetics data of atmospheric chemistry.

关 键 词：丁基 甲基 硫化物 臭氧 动力学 

分 类 号：O64[理学—物理化学]