The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2023
Filed:
Jan. 10, 2020
Johnson Matthey Catalysts (Germany) Gmbh, Redwitz an der Rodach, DE;
Johnson Matthey Public Limited Company, London, GB;
Juergen Bauer, Redwitz an der Rodach, DE;
John Leonello Casci, Billingham, GB;
Ralf Dotzel, Redwitz an der Rodach, DE;
Joerg Muench, Redwitz an der Rodach, DE;
Ralitsa Purova, Erlangen, DE;
Wilhelm Schwieger, Erlangen, DE;
Ameen Shahid, Erlangen, DE;
Selvam Thangaraj, Erlangen, DE;
Tobias Weissenberger, Erlangen, DE;
Johnson Matthey Public Limited Company, London, GB;
Johnson Matthey Catalysts (Germany) Gmbh, Redwitz an der Rodach, DE;
Abstract
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.