a co cs type tsz1 as a result of chemical analysis the zeolite was found to have the following composition in terms of the molar ratio of oxides in the anhydrous basis as a result of x ray diffraction the zeolite crystal was found to be an orthorhombic system first 20 g of the cs type tsz2 obtained in example 12 was added to 200 cc of an aqueous solution containing 15 7 g of cobalt ii acetate tetrahydrate and after the mixture was stirred at 60 u00b0 c for 20 hours the reaction product was washed to carry out the co ion exchange operation this operation was repeated twice and the reaction product then dried to provide a co cs type tsz2 as a result of chemical analysis the zeolite was found to have the following composition in terms of the molar ratio of oxides in the anhydrous basis as a result of x ray diffraction the zeolite crystal was found to be an orthorhombic system first 20 g of the cs type tsz3 obtained in example 13 was added to 200 cc of an aqueous solution containing 5 9 g of cobalt ii acetate tetrahydrate and after the mixture was stirred at 60 u00b0 c for 20 hours the reaction product was washed to carry out the co ion exchange operation this operation was repeated twice and the product then dried to provide a co cs type tsz3 as a result of chemical analysis the zeolite.