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    Process for preparing a zeolitic material having framework type AEI
    8.
    发明授权
    Process for preparing a zeolitic material having framework type AEI 有权

    公开(公告)号：US11224867B2

    公开(公告)日：2022-01-18

    申请号：US16605133

    申请日：2018-05-15

    申请人： BASF Corporation

    发明人： Robert McGuire ,  Ahmad Moini ,  Ulrich Mueller

    IPC分类号： C01B39/48 ,  B01J29/70 ,  B01D53/94 ,  C01B39/02

    摘要： A process for preparing a zeolitic material having framework type AEI and having a framework structure which comprises a tetravalent element Y, a trivalent element X, and oxygen, said process comprising (i) providing a zeolitic material having framework type CHA and having a framework structure comprising the tetravalent element Y, the trivalent element X, and oxygen; (ii) preparing a synthesis mixture comprising the zeolitic material provided in (i), water, a source of the tetravalent element Y other than the zeolitic material provided in (i), and an AEI framework structure directing agent; (ili) subjecting the synthesis mixture prepared in (ii) to hydrothermal synthesis conditions comprising heating the synthesis mixture to a temperature in the range of from 100 to 200° C. and keeping the synthesis mixture at a temperature in this range under autogenous pressure, obtaining the zeolitic material having framework type AEI; wherein Y is one or more of Si, Ge, Sn, Ti, Zr; wherein X is one or more of Al, B, Ga, In; wherein in the framework structure of the zeolitic material provided in (i), the molar ratio Y:X, calculated as YO2: X2O3, is at most 20:1 and, wherein; the process further comprises supporting a metal M selected from the transition metals of groups 7 to 12 of the periodic system of elements.