Process for the production of the CHA-AFT zeolite intergrowth COE-10 and use thereof in heterogeneous catalysis

US12264076B2 · kind B2 · utility

Assignee

• BASF MOBILE EMISSIONS CATALYSTS, LLC · US

Inventors

• Andrei-Nicolae Parvulescu · Ludwigshafen am Rhein, DE
• Ulrich Mueller · Hamburg, DE
• Toshiyuki YOKOI · Tokyo, JP
• Ute KOLB · Mainz, DE
• Yong WANG · Yokohama, JP
• Yasar Krysiak · Mainz, DE

Key dates

• Filing date: May 14, 2020
• Grant date: Apr 1, 2025
• Expiry date: Mar 18, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B39/026
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for the production of a zeolitic material comprising one or more zeolite intergrowth phases of one or more zeolites having a CHA-type framework structure comprising SiO2 and X2O3, and one or more zeolites having an AFT-type framework tructure comprising SiO2 and X2O3, wherein X is a trivalent element, and wherein said process comprises: (1) preparing a mixture comprising one or more sources for SiO2, one or more sources for X2O3, and seed crystals comprising a zeolitic material, said zeolitic material comprising SiO2 and X2O3 in its framework structure and having a CHA-type framework structure; (2) heating the mixture prepared in (1) for obtaining a zeolitic material comprising one or more zeolite intergrowth phases; and (R) subjecting the zeolitic material obtained in (2) to a procedure for removing at least a portion of X from the framework structure of the zeolitic material.