Patent ID: 7531707

Claim:
An alkylation process comprising contacting a first hydrocarbon feed comprising at least one olefin having from 2 to 6 carbon atoms and a second hydrocarbon feed comprising at least one isoparaffin having from 3 to 6 carbon atoms with a catalyst under alkylation conditions, said catalyst comprising a mixture of at least one acidic ionic liquid and at least one alkyl halide, where the acidic ionic liquid is a chloroaluminate ionic liquid prepared by mixing aluminum trichloride (AlCl 3 ) and a hydrocarbyl substituted pyridinium halide, a hydrocarbyl substituted imidazolium halide, trialkylammonium hydrohalide or tetraalkylammonium halide of the general formulas A, B, C and D, respectively, where R═H, methyl, ethyl, propyl, butyl, pentyl or hexyl group and X is a halide, and R 1 and R 2 ═H, methyl, ethyl, propyl, butyl, pentyl or hexyl group and where R 1 and R 2 may or may not be the same, and R 3 , R 4 , and R 5 , and R 6 =methyl, ethyl, propyl, butyl, pentyl or hexyl group and where R 3 , R 4 , R 5 and R 6 may or may not be the same; and wherein the alkyl halide is produced by reacting at least a portion of the first hydrocarbon feed with a hydrogen halide under hydrohalogenation conditions to convert at least a portion of the olefins contained in the first hydrocarbon feed to the alkyl halide; and adding the resulting alkyl halide to the alkylation zone.