Alkylation processes are described herein. The alkylation process generally includes contacting a first aromatic compound with an alkylation catalyst including a metal halide catalyst in the presence of an alkylating agent to form an alkylation output stream including a second aromatic compound and contacting at least a portion of the output stream with a transalkylation catalyst including a zeolite catalyst in the presence of the first aromatic compound to form a transalkylation output stream including the second aromatic compound.