首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Thermal Rate Constant for CN + H_2/D_2 → HCN/DCN + H/D Reaction from T = 293 to 380 K
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Thermal Rate Constant for CN + H_2/D_2 → HCN/DCN + H/D Reaction from T = 293 to 380 K

机译:T = 293至380 K时CN + H_2 / D_2→HCN / DCN + H / D反应的热速率常数

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摘要

The reaction rate constant for the cyano (CN) radical with hydrogen and deuterium has been determined over the temperature range 293-380 K. The CN radical was detected by time-resolved near-infrared absorption using the CN red system (A~2II ← X~2∑) (2, 0) band near 790 nm. These measurements were carried out at low pressures of Ar or He as carrier gas. The diffusion rate of CN in these mixtures was inferred from the diffusion rate of HCN(000) determined using time-resolved infrared absorption of HCN(000) around 3.0 μm, simultaneously with the detection of CN. These measurements provide accurate thermal rate constant data that will enable a detailed comparison to be made between theoretical predictions and experimental measurements for this prototypical reaction system.
机译:在293-380 K的温度范围内,测定了氰基(CN)与氢和氘的反应速率常数。使用CN红体系通过时间分辨近红外吸收法检测CN自由基(A〜2II← X〜2∑)(2,0)波段接近790 nm。这些测量是在作为载气的氩气或氦气的低压下进行的。从HCN(000)的扩散速率可以推断出CN在这些混合物中的扩散速率,而HCN(000)的扩散速率是通过HCN(000)在3.0μm左右的时间分辨红外吸收测定的,同时检测CN。这些测量可提供准确的热速率常数数据,从而可以对该原型反应系统进行理论预测和实验测量之间的详细比较。

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