Temperature dependence of the OH + CINO reaction: evidence for two competing reaction channels
Temperature dependence of the OH + CINO reaction: evidence for two competing reaction channels
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OH CINO 反应的温度依赖性：两个竞争反应通道的证据
DOI：
10.1021/j100273a007
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
C. Grant
中科院分区：
文献类型：
--
作者：
B. Finlayson‐Pitts;M. J. Ezell;C. Grant
研究了快流放电系统中OH与亚硝基氯（CINO）在263 ~ 373 K范围内的温度依赖性。在过量的CINO存在下，OH的衰变随后在309.5 nm处进行共振荧光。以He为载气，总压为1.05±0.05 torr。在室温以上和室温以下，速率常数都增加，这表明存在两个相互竞争的反应路径，一个是直接提取反应，HO + CINO ..—>..HOCl + NO （1a）和一个涉及形成中间络合物，HO + ClNO平衡(HO x ClNO)* ..- >..HONO + Cl （1b）。这支持了Poulet和同事对室温产品数据的解释。参考文献13篇，图4张，表1张。
The temperature dependence of the reaction of OH with nitrosyl chloride, CINO, has been studied from 263 to 373 K in a fast-flow discharge system. The decay of OH in the presence of excess CINO was followed by resonance fluorescence at 309.5 nm. The total pressure was 1.05 +/- 0.05 torr in He as the carrier gas. The rate constant increases both above and below room temperature suggesting the existence of two competing reaction paths, a direct abstraction reaction, HO + CINO ..-->.. HOCl + NO (1a) and one involving formation of an intermediate complex, HO + ClNO in equilibrium (HO x ClNO)* ..-->.. HONO + Cl (1b). This supports the interpretation of the room temperature product data of Poulet and co-workers. 13 references, 4 figures, 1 table.