Patent ID: 11878293
Assignee: BASF SE
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A process for preparing a zeolite material comprising a zeolite having an AEI framework and a framework structure comprising a tetravalent element Y, a trivalent element X, and O and a zeolite having a GME or AFI framework, the process comprising:
(i) preparing a synthesis mixture comprising water, a source of Y, a source of X, an AEI framework structure directing agent, and a source of sodium, wherein the source of Y and/or the source of X comprise sodium;
(ii) heating the synthesis mixture under autogenous pressure to a temperature ranging from 100° C. to 180° C. for at least 6 h, obtaining the zeolite material comprising the zeolite having an AEI framework and a framework structure comprising a tetravalent element Y, a trivalent element X, and O, and the zeolite having a GME or AFI framework, comprised in its mother liquor;
wherein the source of Y and the source of X contribute a total of at least 50 weight-% of elemental sodium in the synthesis mixture prepared in (i);
wherein Y is one or more of Si, Ge, S, Ti, and Zr;
wherein X is one or more of Al,
wherein the source of X comprises a sodium aluminate,
wherein in the synthesis mixture prepared in (i), the synthesis mixture is characterized by a molar ratio of the source of Y, calculated as YO2, relative to the source of X, calculated as X2O3, ranging from 5:1 to 25:1, a molar ratio of the source of Y, calculated as YO2, relative to the AEI framework structure directing agent ranging from 1:1 to 10:1, and a molar ratio of the source of Y, calculated as YO2, relative to the water ranging from 0.01:1 to 1:1.