Chemical substances that contain both indium (In) and silicon (Si) in close proximity catalyze certain organic chemical reactions. The implantation of In onto zeolite containing Si atoms was carried out by a pulse arc plasma process for the possible development of novel catalysts. X-ray photoelectron spectroscopy of the In-implanted zeolite revealed that In was successfully implanted. In addition, the In-implanted zeolite was capable of catalyzing an organic chemical reaction (i.e., Friedel-Crafts alkylation).