公开(公告)号：ZA201705589B

公开(公告)日：2020-11-25

申请号：ZA201705589

申请日：2017-08-17

Applicant: BASF SE A GERMAN COMPANY

Inventor： MATHIAS FEYEN ,  STEFAN MAURER ,  ULRICH MUELLER ,  XINHE BAO ,  WEIPING ZHANG ,  DIRK DE VOS ,  HERMANN GIES ,  FENG-SHOU XIAO ,  YOKOI TOSHIYUKI ,  BILGE YILMAZ ,  RYOICHI OTOMO

Abstract: The present invention relates to a method for the preparation of a treated zeolitic material having a BEA framework structure comprising the steps of: (i) providing a zeolitic material having a BEA framework structure, wherein the BEA framework structure comprises YO2 and X2O3, wherein Y is a tetravalent element, and X is a trivalent element, and wherein the zeolitic material having a BEA framework structure is obtainable and/or obtained from an organotemplate-free synthetic process; (ii) calcining the zeolitic material provided in step (i) at a temperature of 650° C. or more; and (iii) treating the calcined zeolitic material obtained from step (ii) with an aqueous solution having a pH of 5 or less, as well as to zeolitic materials per se preferably obtainable according to the inventive method and to their use, and to a process for converting oxygenates to olefins employing the inventive zeolitic materials.