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公开(公告)号:US11634335B2
公开(公告)日:2023-04-25
申请号:US16739615
申请日:2020-01-10
发明人: Juergen Bauer , John Leonello Casci , Ralf Dotzel , Joerg Muench , Ralitsa Purova , Wilhelm Schwieger , Ameen Shahid , Selvam Thangaraj , Tobias Weissenberger
IPC分类号: B01J29/072 , C01B39/48 , B01J35/04 , F01N3/20 , F01N3/28 , C01B39/14 , C01B39/04 , C01B39/02 , B01J35/10 , B01J35/00 , B01J37/02 , B01J37/00 , B01J37/10 , B01J29/04 , B01J29/72 , B01J29/74 , B01J29/78 , B01J29/76
摘要: The present invention provides an iron-loaded aluminosilicate zeolite having a maximum pore opening defined by eight tetrahedral atoms and having the framework type CHA, AEI, AFX, ERI or LTA, wherein the iron (Fe) is present in a range of from about 0.5 to about 5.0 wt. % based on the total weight of the iron-loaded aluminosilicate zeolite, wherein an ultraviolet-visible absorbance spectrum of the iron-loaded synthetic aluminosilicate zeolite comprises a band at approximately 280 nm, wherein a ratio of an integral, peak-fitted ultraviolet-visible absorbance signal measured in arbitrary units (a.u.) for the band at approximately 280 nm to an integral peak-fitted ultraviolet-visible absorbance signal measured in arbitrary units (a.u.) for a band at approximately 340 nm is >about 2. The present invention further provides a method of making an metal-loaded aluminosilicate zeolite having a maximum pore opening defined by eight tetrahedral atoms from pre-existing aluminosilicate zeolite crystallites, wherein the metal is present in a range of from 0.5 to 5.0 wt. % based on the total weight of the metal-loaded aluminosilicate zeolite.