Shock Wave and Theoretical Modeling Study of the Dissociation of CH2F2. II. Secondary Reactions.

Shock Wave and Theoretical Modeling Study of the Dissociation of CH2F2. II. Secondary Reactions.
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CH2F2 II 二次反应解离的冲击波和理论模型研究

DOI:
10.1021/acs.jpca.7b05857
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发表时间:
2017
期刊:
The journal of physical chemistry. A
影响因子:
--
通讯作者:
J. Troe
J. Troe
中科院分区:
--
文献类型:
--
作者:
C. J. Cobos;G. Knight;L. Sölter;E. Tellbach;J. Troe

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在1800-2200 K的温度范围内,研究了CH_2F_2的热分解和CF_2与H_2的反应。除了来自CF2的贡献外,信号还显示了来自次级反应产物的强烈吸收,可能主要是由CHF + H2→ CH 2F + H反应形成的CH 2F。模拟了CHF、CHF 2和CH 2F的热解离衰减曲线,CHF + CH 2F 2 → CHF 2 + CH 2F、CHF + H2→ CH 2F + H、H + CH 2F 2 → CHF 2 + H2、H + CF2→ CF + HF和H + CF → C + HF等反应的速率常数。在此基础上,模拟了药物的浓度-时间曲线,并与实验吸收-时间曲线进行了比较。
The thermal dissociation of CH2F2and the reaction of CF2with H2was studied in shock waves over the temperature range 1800–2200 K, monitoring the absorption–time profiles at 248 nm. Besides contributions from CF2, the signals showed strong absorptions from secondary reaction products, probably mostly CH2F formed by the reaction CHF + H2→ CH2F + H. Rate constants of a series of possible secondary reactions were modeled, including falloff curves for the thermal dissociations of CHF, CHF2, and CH2F and rate constants of the reactions CHF + CH2F2→ CHF2+ CH2F, CHF + H2→ CH2F + H, H + CH2F2→ CHF2+ H2, H + CF2→ CF + HF, and H + CF → C + HF. On this basis, concentration–time profiles were simulated and compared with experimental absorption–time profiles.
DOI: 10.1021/jp501577k
发表时间: 2014
期刊: The journal of physical chemistry. A
影响因子: --
作者:
C. Cobos;L. Sölter;E. Tellbach;J. Troe
通讯作者: J. Troe
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