Dehydration method for fluorine-based hydrocarbon compound

A method for dehydrating a composition containing a fluorine-based hydrocarbon compound,

• wherein the fluorine-based hydrocarbon compound contains 1,1,1,2-tetrafluoroethane (HFC-134a),
• the method comprising bringing the composition into contact with at least one zeolite selected from the group consisting of chabazite zeolite, mordenite zeolite, beta zeolite, and zeolite Y to dehydrate the composition, and to remove 1,1,2,2-tetrafluoroethane (HFC-134) from the composition,
• wherein the composition after dehydration has a moisture content of less than 3 ppmwt, and has an HFC-134 content of less than 3 ppmwt.

A method for producing a composition containing a fluorine-based hydrocarbon compound,

• wherein the fluorine-based hydrocarbon compound contains 1,1,1,2-tetrafluoroethane (HFC-134a),
• the method comprising bringing a composition containing the fluorine-based hydrocarbon compound into contact with a zeolite having a ratio of silica to alumina (SiO2/Al2O3) of 5 or more to produce a composition having a moisture content of less than about 3 ppmwt, and having a 1,1,2,2-tetrafluoroethane (HFC-134) content of less than 3 ppmwt.

A method for producing a composition containing a fluorine-based hydrocarbon compound,

• wherein the fluorine-based hydrocarbon compound contains 1,1,1,2-tetrafluoroethane (HFC-134a),
• the method comprising the step of bringing a composition containing the fluorine-based hydrocarbon compound into contact with at least one zeolite selected from the group consisting of chabazite zeolite, mordenite zeolite, beta zeolite, and zeolite Y to produce a composition having a moisture content of less than about 3 ppmwt, and having a 1,1,2,2-tetrafluoroethane (HFC-134) content of less than 3 ppmwt.

A method for producing a high-purity fluorine-based hydrocarbon compound, the method comprising the step of bringing a composition containing a fluorine-based hydrocarbon compound containing 1,1,1,2-tetrafluoroethane (HFC-134a) into contact with a zeolite having a ratio of silica to alumina (SiO2/Al2O3) of 5 or more to remove an impurity contained in the fluorine-based hydrocarbon compound, to produce a composition having a moisture content of less than about 3 ppmwt, and having a 1,1,2,2-tetrafluoroethane (HFC-134) content of less than 3 ppmwt.

A method for producing a high-purity fluorine-based hydrocarbon compound, the method comprising the step of bringing a composition containing a fluorine-based hydrocarbon containing 1,1,1,2-tetrafluoroethane (HFC-134a) into contact with at least one zeolite selected from the group consisting of chabazite zeolite, mordenite zeolite, beta zeolite, and zeolite Y to remove an impurity contained in the fluorine-based hydrocarbon compound, to produce a composition having a moisture content of less than about 3 ppmwt, and having a 1,1,2,2-tetrafluoroethane (HFC-134) content of less than 3 ppmwt.

A composition containing a fluorine-based hydrocarbon compound,

• wherein the fluorine-based hydrocarbon compound contains at least one compound selected from the group consisting of 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1,1,2,2-pentafluoroethane (HFC-125), and 2,3,3,3-tetrafluoropropene (HFO-1234yf), and
• wherein a 1,1,2,2-tetrafluoroethane (HFC-134) content is at least 0.1 ppmwt, and less than 3 ppmwt, and a moisture content is less than 3 ppmwt.