Process for a continuous synthesis of zeolitic materials using seed crystals loaded with organotemplate

US11623868B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Hannah SCHREYER · Ludwigshafen, DE
• Andrei-Nicolae Parvulescu · Ludwigshafen am Rhein, DE
• Ulrich Mueller · Hamburg, DE
• Christian Riemann · Ludwigshafen, DE
• Ralf Boehling · Lorsch, DE
• Christoph Schappert · Ludwigshafen, DE
• Bernd Hinrichsen · Stuttgart, DE
• Stefan Dumser · Ludwigshafen, DE
• Stefanie Clade · Ludwigshafen, DE

Key dates

• Filing date: Aug 2, 2019
• Grant date: Apr 11, 2023
• Expiry date: Nov 10, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/151
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Disclosed herein is a continuous process for preparing zeolitic material with a CHA-type framework structure comprising SiO2 and X2O3 and the zeolitic material so-obtained. The processes comprises (i) preparing a mixture comprising one or more sources of SiO2, one or more sources of X2O3, seed crystals, one or more tetraalkylammonium cation R5R6R7R8N+-containing compounds as structure directing agent, and a liquid solvent system; (ii) continuously feeding the mixture prepared in (i) into a continuous flow reactor at a liquid hourly space velocity; and (iii) crystallizing the zeolitic material with a CHA-type framework structure from the mixture in the continuous flow reactor.