公开(公告)号：US11554964B2

公开(公告)日：2023-01-17

申请号：US17058338

申请日：2019-07-26

Applicant: BASF SE

Inventor： Andrei-Nicolae Parvulescu ,  Robert McGuire ,  Ulrich Mueller ,  Alexander Kromer

IPC: C01B39/44 ,  C01B39/04 ,  F01N3/20

Abstract: The present invention relates to a process for preparing a zeolitic material having a framework type FER and having a framework structure comprising silicon, aluminum, and oxygen, said process comprising (i) preparing an aqueous synthesis mixture comprising water; a zeolitic material having a framework type other than FER and having a framework structure comprising silicon, aluminum, and oxygen; a source of silicon other than the zeolitic material having a framework type other than FER; an organic structure directing agent comprising piperidine; a source of an alkali metal; and a source of a base; (ii) subjecting the aqueous synthesis mixture prepared according to (i) to hydrothermal synthesis conditions comprising heating the synthesis mixture to a temperature in the range of from 140 to 190° C. and keeping the synthesis mixture at a temperature in this range under autogenous pressure, obtaining a mother liquor comprising a solid material which comprises the zeolitic material having a framework type FER.