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US 2026/0296995 A1Published application
Methods for producing 1,1-difluoropropene (hfo-1252zc) from 1-chloro-3,3,3-trifluoropropene (hcfo-1233zd)
OwnerSelma Bektesevic, Joshua DeMuth +2inventors
InventorsSelma Bektesevic, Joshua DeMuth, Akbar Mahdavi-Shakib, Haiyou Wang
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Abstract
A method for producing 1,1-difluoropropene (HFO-1252zc) from 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) in the form of a two-step reaction is described. Step one of the reaction includes hydrogenation of HFO-1233zd to produce 1,1,1-trifluoropropane (HFC-263fb). Step two of the reaction includes dehydrofluorination of HFC-263fb to produce HFO-1252zc. Step one includes a catalyst, and step 2 may include a catalyst.
Claims20
A method for producing 1,1-difluoropropene (HFO-1252zc), comprising:
- reacting 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) with hydrogen in the presence of a catalyst to produce a first product composition comprising 1,1,1-trifluoropropane (HFC-263fb);
- and
- reacting HFC-263fb from the first product composition to produce a second product composition comprising 1,1-difluoropropene (HFO-1252zc).
Dependencies are inferred from the claim text.