Shock Wave and Theoretical Modeling Study of the Dissociation of CH2F2. I. Primary Processes.
Shock Wave and Theoretical Modeling Study of the Dissociation of CH2F2. I. Primary Processes.
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CH2F2 I初级过程解离的冲击波和理论模拟研究
DOI:
10.1021/acs.jpca.7b05854
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
J. Troe
中科院分区:
文献类型:
--
作者:
C. J. Cobos;Hintzer;L. Sölter;E. Tellbach;A. Thaler;J. Troe
The unimolecular dissociation of CH2F2leading to CF2+ H2, CHF + HF, or CHF2+ H is investigated by quantum-chemical calculations and unimolecular rate theory. Modeling of the rate constants is accompanied by shock wave experiments over the range of 1400–1800 K, monitoring the formation of CF2. It is shown that the energetically most favorable dissociation channel leading to CF2+ H2has a higher threshold energy than the energetically less favorable one leading to CHF + HF. Falloff curves of the dissociations are modeled. Under the conditions of the described experiments, the primary dissociation CH2F2→ CHF + HF is followed by the reaction CHF + HF → CF2+ H2. The experimental value of the rate constant for the latter reaction indicates that it does not proceed by an addition–elimination process involving CH2F2* intermediates, as assumed before.
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影响因子:
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DOI:
10.1021/acs.jpca.7b05857
发表时间:
2017
期刊:
The journal of physical chemistry. A
影响因子:
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DOI:
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发表时间:
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期刊:
The journal of physical chemistry. A
影响因子:
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作者:
C. Cobos;G. Knight;L. Sölter;E. Tellbach;J. Troe
通讯作者:
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DOI:
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期刊:
影响因子:
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