This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one impurity with at least one zeolite to reduce the concentration of the at least one impurity in the mixture; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A. This disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CF.sub.3CF═CH.sub.2, CF.sub.3CH═CHF, and mixtures thereof; and relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CF.sub.3CCl═CH.sub.2, CF.sub.3CH═CHCl, and mixtures thereof.

This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one impurity with at least one zeolite to reduce the concentration of the at least one impurity in the mixture; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A. This disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CF.sub.3CF═CH.sub.2, CF.sub.3CH═CHF, and mixtures thereof; and relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CF.sub.3CCl═CH.sub.2, CF.sub.3CH═CHCl, and mixtures thereof.

Impurities are removed from a fluoroolefin having a structure of ═CF.sub.2 or ═CHF that has been obtained by a dehydrohalogenation reaction and that contains haloalkene, haloalkane, and/or haloalkyne impurities.

Provided are: a method of purifying a fluoroolefin having a structure of ═CF.sub.2 or ═CHF, comprising bringing a fluoroolefin having a structure of ═CF.sub.2 or ═CHF that has been obtained by a dehydrohalogenation reaction and that contains at least one of haloalkane, haloalkene, and/or haloalkyne impurities into contact with a solid adsorbent to remove the impurities through adsorption; a high-purity fluoroolefin; and a production method therefor.

Impurities are removed from a fluoroolefin having a structure of ═CF.sub.2 or ═CHF that has been obtained by a dehydrohalogenation reaction and that contains haloalkene, haloalkane, and/or haloalkyne impurities.

Provided are: a method of purifying a fluoroolefin having a structure of ═CF.sub.2 or ═CHF, comprising bringing a fluoroolefin having a structure of ═CF.sub.2 or ═CHF that has been obtained by a dehydrohalogenation reaction and that contains at least one of haloalkane, haloalkene, and/or haloalkyne impurities into contact with a solid adsorbent to remove the impurities through adsorption; a high-purity fluoroolefin; and a production method therefor.

Impurities are removed from a fluoroolefin having a structure of ═CF.sub.2 or ═CHF that has been obtained by a dehydrohalogenation reaction and that contains haloalkene, haloalkane, and/or haloalkyne impurities.

Provided are: a method of purifying a fluoroolefin having a structure of ═CF.sub.2 or ═CHF, comprising bringing a fluoroolefin having a structure of ═CF.sub.2 or ═CHF that has been obtained by a dehydrohalogenation reaction and that contains at least one of haloalkane, haloalkene, and/or haloalkyne impurities into contact with a solid adsorbent to remove the impurities through adsorption; a high-purity fluoroolefin; and a production method therefor.

Methods for purification of a fluorocarbon or hydrofluorocarbon containing at least one undesired halocarbon impurities comprise flowing the fluorocarbon or hydrofluorocarbon through at least one adsorbent beds to selectively adsorb the at least one undesired halocarbon impurities through physical adsorption and/or chemical adsorption, wherein the at least one adsorbent beds contain a metal oxide supported on an adsorbent in an inert atmosphere.

Methods for purification of a fluorocarbon or hydrofluorocarbon containing at least one undesired halocarbon impurities comprise flowing the fluorocarbon or hydrofluorocarbon through at least one adsorbent beds to selectively adsorb the at least one undesired halocarbon impurities through physical adsorption and/or chemical adsorption, wherein the at least one adsorbent beds contain a metal oxide supported on an adsorbent in an inert atmosphere.

Methods for purification of a fluorocarbon or hydrofluorocarbon containing at least one undesired halocarbon impurities comprise flowing the fluorocarbon or hydrofluorocarbon through at least one adsorbent beds to selectively adsorb the at least one undesired halocarbon impurities through physical adsorption and/or chemical adsorption, wherein the at least one adsorbent beds contain a metal oxide supported on an adsorbent in an inert atmosphere.

An object of the present disclosure is to provide a method for dehydrating a composition containing a fluorine-based hydrocarbon compound, such as HFC-134a. The dehydration method includes the step of bringing a composition containing a fluorine-based hydrocarbon compound into contact with a zeolite.

An object of the present disclosure is to provide a method for dehydrating a composition containing a fluorine-based hydrocarbon compound, such as HFC-134a. The dehydration method includes the step of bringing a composition containing a fluorine-based hydrocarbon compound into contact with a zeolite.