Rate constant for the reaction of PO radical with oxygen
Rate constant for the reaction of PO radical with oxygen
复制标题
PO自由基与氧反应的速率常数
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
J. S. Bernstein
中科院分区：
文献类型：
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作者：
S. Long;S. Christesen;A. P. Force;J. S. Bernstein
利用CO2 TEA激光器，在总压高达1.4 Torr的过量氧条件下，通过红外多光子解离甲基膦酸二甲酯生成PO自由基。PO （v ' =0）的伪一阶反应衰变之后是激光诱导荧光，利用其A 2Σ+ -X 2Π跃迁。PO+O2反应的双分子速率常数为1.4（±0.2）×10−11 cc/molecule/s。在流动排放系统中较慢速率的早期测量可能会由于正反反应PO+O2↔PO2+O之间的平衡的建立而变得复杂。
A CO2 TEA laser is used to generate PO radical by infrared multiphoton dissociation of dimethyl methylphosphonate in an excess of oxygen at total pressures up to 1.4 Torr. The pseudo‐first‐order reactive decay of PO (v‘=0) is followed by laser‐induced fluorescence utilizing its A 2Σ+–X 2Π transition. A bimolecular rate constant of 1.4 (±0.2)×10−11 cc/molecule/s is measured for the PO+O2 reaction. Earlier measurements of a much slower rate in flow discharge systems may be complicated by the establishment of equilibrium between the forward and reverse reactions PO+O2↔PO2+O.