Invention Grant
- Patent Title: Bimetal-exchanged zeolite beta from organotemplate-free synthesis and use thereof in the selective catalytic reduction of NOx
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Application No.: US15109601Application Date: 2014-12-30
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Publication No.: US10596518B2Publication Date: 2020-03-24
- Inventor: Mathias Feyen , Stefan Maurer , Ulrich Mueller , Xinhe Bao , Weiping Zhang , Dirk De Vos , Hermann Gies , Feng-Shou Xiao , Toshiyuki Yokoi , Bilge Yilmaz
- Applicant: BASF SE , TOKYO INSTITUTE OF TECHNOLOGY
- Applicant Address: DE Ludwigshafen JP Meguro-ku
- Assignee: BASF SE,TOKYO INSTITUTE OF TECHNOLOGY
- Current Assignee: BASF SE,TOKYO INSTITUTE OF TECHNOLOGY
- Current Assignee Address: DE Ludwigshafen JP Meguro-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: CNPCT/CN2014/070059 20140103
- International Application: PCT/IB2014/067413 WO 20141230
- International Announcement: WO2015/101930 WO 20150709
- Main IPC: B01D53/94
- IPC: B01D53/94 ; C01B39/46 ; B01J37/30 ; C01B39/02 ; B01J29/76 ; B01J37/04 ; B01J37/02

Abstract:
The present invention relates to a process for the production of a zeolitic material having a BEA-type framework structure comprising YO2 and X2O3, wherein said process comprises the steps of (1) preparing a mixture comprising one or more sources for YO2 and one or more sources for X2O3; (2) crystallizing the mixture obtained in step (1); (3) subjecting the zeolitic material having a BEA-type framework structure obtained in step (2) to an ion-exchange procedure with Cu; and (4) subjecting the Cu ion-exchanged zeolitic material obtained in step (3) to an ion-exchange procedure with Fe; wherein Y is a tetravalent element, and X is a trivalent element, wherein the mixture provided in step (1) and crystallized in step (2) further comprises seed crystals comprising one or more zeolitic materials having a BEA-type framework structure, and wherein the mixture provided in step (1) and crystallized in step (2) does not contain an organotemplate as a structure-directing agent, as well as to the zeolitic material having a BEA framework structure per se, and to its use, in particular in a method for the treatment of NOx by selective catalytic reduction (SCR).
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