Sulfated ions loaded on natural Syrian zeolite were prepared by impregnation method of zeolite samples in aqueous solution of ammonium sulfate with different concentrations. After that, the samples were dried at 1100C Followed by calcinations at 6000C. The Characterization tests have been done of prepared catalysts using X.R.D, FTIR, TG-DTA methods and by measurement of surface aria. A new phase of sulfated elements has been formed as a result of binding SO42- ions as sulfated complex coordinated with metal elements. The catalytic activity of sample in polyethylene cracking reaction was increased directly with the percent of sulfate ions.