Method for purifying (E)-1-chloro-3,3,3-trifluoropropene

Patent metadata

Field	Value
Publication number	US-9321708-B2
Application number	US-201314375193-A
Country	US
Kind code	B2
Filing date	Jan 24, 2013
Priority date	Feb 2, 2012
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

Provided is a purification method for efficiently reducing an undesirable organic compound or compound in (E)-1-chloro-3,3,3-trifluoropropene and thereby obtaining (E)-1-chloro-3,3,3-trifluoropropene with high purity. The purification method of OF-1233E according to the present invention is characterized by bringing a composition containing OF-1233E and at least one organic compound selected from the group consisting of HCFC-142 isomers, HCFC-244fa, HFC-245fa, OF-1234E, OF-1234Z and OF-1233Z into contact with a solid adsorbent.

First claim

The invention claimed is:

1. A method for purifying (E)-1-chloro-3,3,3-trifluoropropene (OF-1233E), comprising bringing a composition containing OF-1233E and 1,1,1,3,3-pentafluoropropane (HCFC-245fa) into contact with a solid adsorbent,
wherein the solid adsorbent is a zeolite X; and
wherein the weight ratio of the composition to the solid adsorbent is in a range of 5 to 50.

2. The method according to claim 1 , wherein the zeolite X is at least one of a Na-exchanged zeolite X and a Ca-exchanged zeolite X.

3. The method according to claim 1 , wherein the weight ratio of the composition to the solid adsorbent is in the range of 8 to 40.

4. The method according to claim 2 , wherein the weight ratio of the composition to the solid adsorbent is in the range of 8 to 40.

5. A method for purifying OF-1233E, comprising bringing a composition containing OF-1233E, HFC-245fa, and at least one organic compound selected from the group consisting of compounds of the formula C 2 H 3 ClF 2 (HCFC-142 isomers), 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa), (E)-1,3,3,3-tetrafluoropropene (OF-1234E), (Z)-1,3,3,3-tetrafluoropropene (OF-1234Z), and (Z)-1-chloro-3,3,3-trifluoropropene (OF-1233Z) into contact with a solid adsorbent,
wherein the solid adsorbent is a zeolite X; and
wherein the weight ratio of the composition to the solid adsorbent is in a range of 5 to 50.

6. The method according to claim 5 , wherein the zeolite X is at least one of a Na-exchanged zeolite X and a Ca-exchanged zeolite X.

7. The method according to claim 5 , wherein the weight ratio of the composition to the solid adsorbent is in the range of 8 to 40.

8. The method according to claim 6 , wherein the weight ratio of the composition to the solid adsorbent is in the range of 8 to 40.

9. A solid-liquid heterogeneous mixture for use in the method according to claim 1 , comprising:
a composition containing OF-1233E and; and
a solid adsorbent,
wherein the solid adsorbent is a zeolite X; and
wherein the weight ratio of the composition to the solid adsorbent is in a range of 5 to 50.

10. The solid-liquid heterogeneous mixture according to claim 9 , wherein the zeolite X is at least one of a Na-exchanged zeolite X and a Ca-exchanged zeolite X.

11. The solid-liquid heterogeneous mixture according to claim 9 , wherein the weight ratio of the composition to the solid adsorbent is in the range of 8 to 40.

12. The solid-liquid heterogeneous mixture according to claim 10 , wherein the weight ratio of the composition to the solid adsorbent is in the range of 8 to 40.

13. The solid-liquid heterogeneous mixture for use in the method according to claim 5 , comprising:
a composition containing OF-1233E, HFC-245fa, and at least one organic compound selected from the group consisting of HCFC-142 isomers, HCFC-244fa, OF-1234E, OF-1234Z, and OF-1233Z; and
a solid adsorbent,
wherein the solid adsorbent is a zeolite X; and
wherein the weight ratio of the composition to the solid adsorbent is in a range of 5 to 50.

14. The solid-liquid heterogeneous mixture according to claim 13 , wherein the zeolite X is at least one of a Na-exchanged zeolite X and a Ca-exchanged zeolite X.

15. The solid-liquid heterogeneous mixture according to claim 13 , wherein the weight ratio of the composition to the solid adsorbent is in the range of 8 to 40.

16. The solid-liquid heterogeneous mixture according to claim 14 , wherein the weight ratio of the composition to the solid adsorbent is in the range of 8 to 40.

Assignees

• Central Glass Co Ltd

Inventors

• Imura Hideaki
• Takada Naoto
• Okamoto Masamune

Classifications

• B01J2220/42

  Materials comprising a mixture of inorganic materials (materials coated or impregnated on a carrier B01J20/32) · CPC title

• B01J20/18

  Synthetic zeolitic molecular sieves · CPC title

• C07C21/18

  containing fluorine · CPC title

• C07C17/389 Primary

  by adsorption on solids · CPC title

• B01J20/165

  Natural alumino-silicates, e.g. zeolites · CPC title