calculated as metal and relative to the weight of the zeolite material and the platinum in the form of nh 3 4 pt no 3 2 by means of the incipient wetness method after the impregnation the zeolite material was dried over night at a temperature of 120 u00b0 c after the drying the impregnated zeolite material was calcined in an argon atmosphere over a period of 5 h at a temperature of 790 u00b0 c the heating rate from room temperature to 300 u00b0 c was 0 3 u00b0 c min the heating rate from 300 u00b0 c to 790 u00b0 c was 4 u00b0 c min and the argon volumetric flow rate during the heating and calcining phase was 2 l min the decomposition of the nh 3 4 pt no 3 2 proceeds in a reductive manner with the result that pt of oxidation state 0 forms during the calcining a catalyst was produced analogously to comparison example 2 with the only difference that a powdery aluminium silicate zeolite material of the structure type beta bea in the h form with a si al2 atomic ratio of 35 was used as zeolite material a catalyst was produced analogously to comparison example 2 with the differences that a powdery aluminium silicate zeolite material of the structure type beta bea in the h form with an si al2 atomic ratio of 35 was used as zeolite material that the heating rate from room temperature to 790 u00b0 c was 2 u00b0 c min and that after the.