Patent ID: 7956230

Claim:
A method for reducing halide concentration in a hydrocarbon product made by a hydrocarbon conversion process that is an isoparaffin alkylation using an ionic liquid catalyst comprising a halogen-containing acidic ionic liquid, comprising: (i) separating an at least a portion of the hydrocarbon product from the ionic liquid catalyst used in the hydrocarbon conversion process from the hydrocarbon product; (ii) contacting the at least a portion of the separated hydrocarbon product of step (i) with an ionic liquid catalyst having the same formula as the ionic liquid catalyst used in the hydrocarbon conversion process; (iii) separating an at least a portion of the hydrocarbon product from the ionic liquid catalyst of step (ii); and (iv) recovering an at least a portion of the separated hydrocarbon product of step (iii) having a halide concentration less than the halide concentration of the at least a portion of the separated hydrocarbon product of step (i); wherein the halide concentration in the recovered hydrocarbon in step (iv) is at least 30% less than the halide concentration of the hydrocarbon product of step (i).