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A Theoretical and Experimental Study of the CN + NO Association Reaction

机译:CN + NO缔合反应的理论和实验研究

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摘要

A pulsed-laser photolysis/laser-induced fluorescence technique is employed in the determination of the pressure and temperature dependence of the reaction of CN with NO in the range from 207 to 740 K and for Ar bath gas pressures ranging from 30 to 900 torr. A variational RRKM model coupled with a one-dimensional master equation treatment provides a reasonably satisfactory description of the available kinetic data for both the association and dissociation processes. The association kinetic data is best fit by a collisional energy transfer parameter, <ΔE>_(down), for the simple exponential down model, which gradually increases from -35 cm~(-1) at 100 K to -500 cm~(-1) at 740 K. The expression 3.4 * 10~(-10) exp(120/T) cm~3 s~(-1) reproduces the present theoretical estimates for the high-pressure rate constant in the range from 207 to 740 K.
机译:脉冲激光光解/激光诱导的荧光技术可用于测定CN与NO反应的压力和温度依赖性,其范围为207至740 K,并且Ar浴气体的压力为30至900托。带有一维主方程处理的变分RRKM模型为关联和解离过程提供了可用动力学数据的合理令人满意的描述。对于简单的指数下降模型,缔合动力学数据最好通过碰撞能量传递参数<ΔE> _(down)拟合,该参数在100 K时从-35 cm〜(-1)逐渐增加到-500 cm〜( -1)在740 K时。表达式3.4 * 10〜(-10)exp(120 / T)cm〜3 s〜(-1)重现了当前理论估计值,范围为207至207 740千

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