In situ copper ion exchange for pre-exchanged copper zeolitic material

摘要

the present invention (i) water; zeolitic materials comprising copper; a source of copper other than a zeolitic material comprising copper; and alumina; silica; titania; zirconia; ceria; mixed oxides comprising at least one of Al, Si, Ti, Zr and Ce; and a non-zeolitic oxidizing material selected from the group consisting of mixtures of two or more thereof. preparing an aqueous mixture comprising; (ii) on a surface of an inner wall of the substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end, and a plurality of passageways defined by the inner wall of the substrate extending through the substrate; placing the mixture obtained in (i); optionally, drying the substrate comprising the mixture disposed thereon; (iii) calcining the substrate obtained in (ii) above It relates to a method for preparing a catalyst comprising a zeolitic material comprising copper comprising a.