Composite material

US11179707B2 · kind B2 · utility

Assignee

• Johnson Matthey Catalysts (Germany) GmbH · DE

Inventors

• Juergen Bauer · Burgkunstadt, DE
• Ralf Dotzel · Burgkunstadt, DE
• Joerg Werner Muench · Burgkunstadt, DE
• Ralitsa Purova · Erlangen, DE
• Wilhelm Schwieger · Spardorf, DE
• Thangaraj Selvam · Erlangen, DE
• Ameen Shahid · Erlangen, DE

Key dates

• Filing date: May 18, 2020
• Grant date: Nov 23, 2021
• Expiry date: May 18, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2510/063
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A composite material comprises a macroporous silicate-based material at least partially substituted with at least one microporous zeolite, wherein the microporous zeolite is functionalised with either copper, iron or both copper and iron, and wherein the composite material is in the form of particles. The composite material can be obtained using a method comprising the steps of: (i) providing a mixture comprising a silicate-containing scaffold having a macroporous structure, an aluminium source and an organic template; (ii) hydrothermally treating the mixture to form a microporous zeolite-containing structure substantially retaining the macroporous structure of the silicate-containing scaffold; (iii) incorporating copper, iron or both copper and iron into the zeolite. The silicate-containing scaffold can be a diatomaceous earth.