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US 8,263,817 B2Granted
Synthesis of 1234YF by selective dehydrochlorination of 244BB
AssigneeE. I. Du Pont de Nemours and Company
InventorsMario Joseph Nappa, Robert D. Lousenberg, Andrew Jackson
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Abstract
Disclosed is a process for the manufacture of 2,3,3,3-tetrafluoropropene comprising: (a) contacting 1,1,1,2,tetrafluoro-2-chloropropane with a catalyst comprised of chromium (III) oxide, and at least 1% of an alkali metal, to produce a product mixture comprising 2,3,3,3-tetrafluoropropene; and (b) recovering said 2,3,3,3-tetrafluoropropene from the product mixture produced in step (a) above.
Claims7
A process for the manufacture of 2,3,3,3-tetrafluoropropene comprising:
- (a) contacting 1,1,1,2,tetrafluoro-2-chloropropane with a catalyst comprised of chromium (III) oxide, and at least 1% of an alkali metal, to produce a product mixture comprising 2,3,3,3-tetrafluoropropene;
- and (b) recovering said 2,3,3,3-tetrafluoropropene from the product mixture produced in (a);
- wherein said product mixture comprises less than 15 parts per hundred of 2-chloro-3,3,3-trifluoropropene;
- wherein said catalyst comprises at least 1 percent by weight potassium.
1 more element
Dependencies are inferred from the claim text.