Pulse radiolysis study of reactions of alkyl and alkylperoxy radicals originating from methyl tert-butyl ether in the gas phase
作者:Sarka Langer、Evert Ljungström、Thomas Ellermann、Ole J. Nielsen、Jens Sehested
DOI:10.1016/0009-2614(95)00571-k
日期:1995.7
reactions of alkyl and alkylperoxy radicals from methyl tert-butyl ether (MTBE) were studied in 1 atm of SF6 by the pulse radiolysis-UV absorption technique. UV spectra for the radical mixtures were quantified from 215 to 340 nm. At 240 nm. σR = (2.6 ± 0.4) × 10−18 cm2 molecule−1 and σRO2 = (4.1 ± 0.6) × 10−18 cm2 molecule−1 (base e). The rate constant for the self-reaction of the alkyl radicals is
通过脉冲辐射分解-UV吸收技术研究了在1 atm SF 6中来自甲基叔丁基醚(MTBE)的烷基和烷基过氧自由基反应的UV光谱和动力学。自由基混合物的UV光谱在215至340nm之间定量。在240 nm。σ [R =(2.6±0.4)×10 -18厘米2分子-1和σ RO 2 =(4.1±0.6)×10 -18厘米2分子-1(以e为底)。烷基自由基的自反应速率常数为(2.5±1.1)×10 -11 cm 3分子-1 s -1。所述速率常数与分子氧的烷基基团和烷基过氧自由基与NO和NO的反应2是(9.1±1.5)×10 -13,(4.3±1.6)×10 -12和(1.2±0.3)×10 -分别为11 cm 3分子-1 s -1。上面给出的速率常数是指在分子的叔丁基侧的反应。