Articles | Volume 22, issue 5
Atmos. Chem. Phys., 22, 3371–3378, 2022
https://doi.org/10.5194/acp-22-3371-2022
Atmos. Chem. Phys., 22, 3371–3378, 2022
https://doi.org/10.5194/acp-22-3371-2022
Research article
14 Mar 2022
Research article | 14 Mar 2022

Global emissions of perfluorocyclobutane (PFC-318, c-C4F8) resulting from the use of hydrochlorofluorocarbon-22 (HCFC-22) feedstock to produce polytetrafluoroethylene (PTFE) and related fluorochemicals

Jens Mühle et al.

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Emissions of the strong greenhouse gas perfluorocyclobutane (c-C4F8) into the atmosphere have been increasing sharply since the early 2000s. These c-C4F8 emissions are highly correlated with the amount of hydrochlorofluorocarbon-22 produced to synthesize polytetrafluoroethylene (known for its non-stick properties) and related chemicals. From this process, c-C4F8 by-product is vented to the atmosphere. Avoiding these unnecessary c-C4F8 emissions could reduce the climate impact of this industry.
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