Catalyst composite comprising an alkaline earth metal containing cha zeolite and use thereof in a process for the conversion of oxygenates to olefins

A process for the preparation of a catalyst comprising one or more alkaline earth metals selected from the group consisting of Mg, Ca, Sr, Ba, and combinations of two or more thereof, comprising

• (A) providing a zeolitic material having the CHA framework structure comprising YO2 and X2O3, wherein Y is a tetravalent element and X is a trivalent element, wherein the framework of the zeolitic material contains substantially no phosphorous, and wherein the zeolitic material optionally comprises one or more alkaline earth metals;
• (B) mixing the zeolitic material provided in (A) with one or more metal oxides and/or metalloid oxides and with a solvent system;
• (C) optionally homogenizing the mixture obtained in (B);
• (D) molding of the mixture obtained in (B) or (C);
• (E) optional drying of the molding obtained in (D);
• (F) optional calcining of the molding obtained in (D) or (E);
• (G) optional impregnation of the molding obtained in (D), (E), or (F) with a solution containing one or more salts of the one or more alkaline earth metals;
• (H) optional drying of the molding obtained in (G);
• and
• (I) optional calcining of the molding obtained in (G) or (H);
• wherein the one or more alkaline earth metals in (A) and/or (G) are selected from the group consisting of Mg, Ca, Sr, Ba, and combinations of two or more thereof.