Azeotrope-like composition of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) and hydrogen fluoride (HF)
View Patent ↗Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf).
1. An azeotropic or azeotrope-like composition which consists essentially of hydrogen fluoride and 2-chloro-3,3,3-trifluoropropene.
2. The azeotropic or azeotrope-like composition of claim 1 , which consists of hydrogen fluoride and 2-chloro-3,3,3-trifluoropropene.
3. The azeotropic or azeotrope-like composition of claim 1 comprising, from about 12 mole percent to about 98 mole percent hydrogen fluoride and from about 2 mole percent to about 88 mole percent 2-chloro-3,3,3-trifluoropropene, which composition has a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.
4. The azeotropic or azeotrope-like composition of claim 3 , wherein the hydrogen fluoride is present in the amount from about 12 mole percent to about 86 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 14 mole percent to about 88 mole percent.
5. The azeotropic or azeotrope-like composition of claim 4 , wherein the hydrogen fluoride is present in the amount from about 38 mole percent to about 86 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 14 mole percent to about 62 mole percent.
6. The azeotropic or azeotrope-like composition of claim 4 , having a boiling point of about 0° C. at a pressure of about 15 psia.
7. The azeotropic or azeotrope-like composition of claim 3 , wherein the hydrogen fluoride is present in the amount from about 22 mole percent to about 86 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 14 mole percent to about 78 mole percent.
8. The azeotropic or azeotrope-like composition of claim 7 , wherein the hydrogen fluoride is present in the amount from about 38 mole percent to about 86 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 14 mole percent to about 62 mole percent.
9. The azeotropic or azeotrope-like composition of claim 7 , having a boiling point of about 25° C. at a pressure of about 38 psia.
10. The azeotropic or azeotrope-like composition of claim 7 , wherein the hydrogen fluoride is present in the amount from about 38 mole percent to about 81 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 19 mole percent to about 62 mole percent.
11. The azeotropic or azeotrope-like composition of claim 10 , having a boiling point of about 61° C. at a pressure of about 107 psia.
12. The azeotropic or azeotrope-like composition of claim 1 having a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.
13. The azeotropic or azeotrope-like composition of claim 1 , wherein the azeotropic or azeotrope-like composition is heterogeneous.
14. The azeotropic or azeotrope-like composition of claim 13 comprising, from about 12 mole percent to about 98 mole percent hydrogen fluoride and from about 2 mole percent to about 88 mole percent 2-chloro-3,3,3-trifluoropropene, which composition has a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.
15. The azeotropic or azeotrope-like composition of claim 14 , wherein the hydrogen fluoride is present in the amount from about 12 mole percent to about 86 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 14 mole percent to about 88 mole percent.
16. The azeotropic or azeotrope-like composition of claim 15 , wherein the hydrogen fluoride is present in the amount from about 38 mole percent to about 86 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 14 mole percent to about 62 mole percent.
17. The azeotropic or azeotrope-like composition of claim 15 , having a boiling point of about 0° C. at a pressure of about 15 psia.
18. The azeotropic or azeotrope-like composition of claim 14 , wherein the hydrogen fluoride is present in the amount from about 22 mole percent to about 86 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 14 mole percent to about 78 mole percent.
19. The azeotropic or azeotrope-like composition of claim 18 , wherein the hydrogen fluoride is present in the amount from about 38 mole percent to about 86 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 14 mole percent to about 62 mole percent.
20. The azeotropic or azeotrope-like composition of claim 18 , having a boiling point of about 25° C. at a pressure of about 38 psia.
21. The azeotropic or azeotrope-like composition of claim 18 , wherein the hydrogen fluoride is present in the amount from about 38 mole percent to about 81 mole percent and the 2-chloro-3,3,3-trifluoropropene is present in the amount from about 19 mole percent to about 62 mole percent.
22. The azeotropic or azeotrope-like composition of claim 21 , having a boiling point of about 61° C. at a pressure of about 107 psia.