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New Eco-Friendly Teflon Cookware
Scientists have identified a catalyst that efficiently breaks the C-F bond and converts it to a carbon-hydrogen bond, rendering it harmless to the environment, which might lead to eco-friendly Teflon cookware.
Though the strength of the C-F bond makes it useful in so many applications apart from Teflon cookware, it also gives a formidable greenhouse gas effects that persists in nature.
"The C-F bond is difficult to transform into other bonds under mild conditions because it is inert and unreactive; it's a challenge to chemists," said lead author chemist Oleg Ozerov, who conducted the research with postdoc Christos Douvris.
Ozerov identified a new catalytic process for a class of carborane-silylium compounds that causes the bonds in representative HFCs to react at room temperature, swapping their carbon-fluorine bonds for carbon-hydrogen bonds.
The silylium catalyst performs the critical task of breaking the C-F bond by abstracting the fluoride from the fluorocarbon and attaching it to a silicon atom.
The end product is a compound with a silicon-fluorine bond, which is no longer a greenhouse threat.
"Conversion of PFCs remains a challenge, and our research efforts are directed at designing even more active catalysts, capable of PFC activation," said Ozerov.
This finding could eventually lead to large-scale reactions to convert environmental pollutants that contain C-F bonds into products that could be reused or destroyed without special equipment.
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