Research paperReaction kinetics of (CF3)2CFCN with OH radicals as a function of temperature (278–358 K): A good replacement for greenhouse SF6?

Add time:08/26/2019    Source:sciencedirect.com

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.

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