公开(公告)号：US20210370280A1

公开(公告)日：2021-12-02

申请号：US17309167

申请日：2019-11-01

Applicant: BASF Corporation

Inventor： Eduard KUNKES ,  Ahmad MOINI ,  Maritza ORTEGA

IPC: B01J29/76 ,  F01N3/20 ,  F01N3/08 ,  C01B39/46 ,  B01J35/10 ,  B01J6/00 ,  B01J37/04 ,  B01J37/08

Abstract: The present disclosure provides a method of making zeolite intergrowths. In one embodiment, the present disclosure provides a method of making an AEI-based material, including the steps of: preparing a mixture of water, an alumina source, a silica source, a CHA structure directing agent, and an AEI structure directing agent, wherein the molar ratio of the CHA structure directing agent to the AEI structure directing agent is from about 1:1 to about 1:15; heating the mixture at a temperature sufficient to promote formation of crystals; and calcining the crystals at a temperature of from about 450° C. to about 750° C. to obtain a product, wherein no halide-containing reagent is employed. The AEI-based materials of the present disclosure may find particular use in selective catalytic reduction of NOx in exhaust gas streams.