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Reaction Kinetics of (CF3)2CFCN with OH Radicals as a Function of Temperature (278-358 K): A good replacement for greenhouse SF6?
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2017-09-20 , DOI: 10.1016/j.cplett.2017.09.039
Sergio Blázquez , María Antiñolo , Ole J. Nielsen , José Albaladejo , Elena Jiménez

In many industrial applications, (CF3)2CFCN has been suggested as SF6 substitute, which possess a global warming potential (GWP100-yr) of 23500 relative to CO2. The temperature dependence of the rate coefficient (kOH) for the OH+(CF3)2CFCN reaction is reported for the first time: kOH(278–358 K)=(5.9±3.2)×10-13exp{-(1856±162)/T} cm3 molecule-1 s-1. A lifetime of 47 years was estimated relative to that of CH3CCl3. Infrared absorption cross sections were also determined to derive the radiative efficiency (0.28 W m-2 ppbv-1). A GWP100-yr of 3646 was estimated, resulting in a significant reduction of the contribution to global warming if SF6 was replaced by (CF3)2CFCN.

中文翻译:

(CF 32 CFCN与OH自由基的反应动力学随温度(278-358 K)的变化:温室SF 6的良好替代品?

在许多工业应用中,已经提出了(CF 32 CFCN作为SF 6的替代物,它具有相对于CO 2的23500的全球变暖潜能(GWP 100年)。首次报道了OH +(CF 32 CFCN反应的速率系数(k OH)与温度的关系:k OH(278–358 K)=(5.9±3.2)×10 -13 exp {-( 1856±162)/ T } cm 3分子-1 s -1。相对于CH 3 CCl 3,估计寿命为47年。。还确定了红外吸收截面,以得出辐射效率(0.28 W m -2 ppbv -1)。据估计,全球升温潜能值为100年的3646年,如果用(CF 32 CFCN代替SF 6,将大大降低对全球变暖的贡献。
更新日期:2017-09-20
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