Catalytic hydrogenation of fluoroolefins, alhpa-alumina supported palladium compositions and their use as hydrogenation catalysts

A composition comprising at least one fluoroolefin having the formula Cn—HmF2n-m;

• a at least one hydrofluoralkane having the formula CnHm+2F2n-m, wherein n is an integer from 2 to 8 and m is an integer from 0 to 2n−1, and a palladium catalyst comprising palladium supported on a carrier comprising α-Al2O3, wherein the palladium concentration is from about 0.001 wt % to about 0.1 wt % based on the total weight of the palladium and the carrier, wherein the molar ratio of the hydrofluoroalkane to the fluoroolefin ranges from about 10:1 to about 1:1.

A composition comprising a fluoroolefin having the formula Cn—HmF2n-m;

• a hydrofluoroalkane which is the hydrogenation product of said fluoroolefin, said hydrofluoralkane having the formula CnHm+2F2n-m, wherein n is an integer from 2 to 8 and in is an integer from 0 to 2n−1, a bed of palladium catalyst supported on a carrier comprising α-Al2O3, the bed of palladium catalyst having a front and a back, wherein the palladium catalyst in the front of the bed has a lower palladium concentration than the palladium catalyst in the back of the bed, wherein the palladium concentration of the catalyst in the front of the bed is from about 0.001 wt % to about 0.2 wt % based on the total weight of the palladium and the carrier, and the palladium concentration of the catalyst in the back of the bed is from about 0.1 wt % to about 1 wt % based on the total weight of the palladium and the carrier.

A composition comprising at least one fluoroolefin having the formula Cn—HmF2n-m;

• and at least one hydrofluoralkane having the formula CnHm+2F2n-m, wherein n is an integer from 2 to 8 and m is an integer from 0 to 2n−1, wherein the molar ratio of the hydrofluoroalkane to fluoroolefin ranges from about 10:1 to about 1:1.