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MFI Type Zeolite Aggregates with Nanosized Particles via a Combination of Spray Drying and Steam-Assisted Crystallization (SAC) Techniques

Machoke, Albert G. F.; Arias, Aurina Martinez; Baracchini, Giulia 1; Rubin, Michael ORCID iD icon 1,2; Baser, Hasan; Weissenberger, Tobias; Dittmeyer, Roland 1,2; Weber, Alfred; Hartmann, Martin; Schwieger, Wilhelm
1 Institut für Mikroverfahrenstechnik (IMVT), Karlsruher Institut für Technologie (KIT)
2 Institut für Katalyseforschung und -technologie (IKFT), Karlsruher Institut für Technologie (KIT)

Abstract:

Hydrothermal synthesis is the state-of-the-art technique for the preparation of zeolites and related porous solids. However, when it comes to the preparation of nanosized zeolites, this technique is limited by low yields, separation problems and high amounts of waste. In this work, we utilized the strengths of a combination of spray drying and steam-assisted crystallization (SAC), also known as dry gel conversion, to reduce these problems. At spray drying temperatures between 300 and 400 °C, it was possible to convert all the amorphous material via SAC into zeolite particles without extra addition of template. Kinetic studies of SAC revealed that about 4 to 8 days are needed to achieve the formation of a 100% crystalline product. The newly formed crystalline phase was crystallized on the surface of the nanosized zeolites and led to a slight increase in the primary particle size while the macroscopic morphology of the spray-dried aggregates was preserved. This work demonstrates that the combination of spray drying and SAC are useful tools in supplementing the hydrothermal synthesis of nanosized zeolites.


Verlagsausgabe §
DOI: 10.5445/IR/1000156565
Veröffentlicht am 10.03.2023
Originalveröffentlichung
DOI: 10.3390/catal13030536
Scopus
Zitationen: 2
Web of Science
Zitationen: 2
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Mikroverfahrenstechnik (IMVT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 07.03.2023
Sprache Englisch
Identifikator ISSN: 2073-4344
KITopen-ID: 1000156565
HGF-Programm 38.03.02 (POF IV, LK 01) Power-based Fuels and Chemicals
Erschienen in Catalysts
Verlag MDPI
Band 13
Heft 3
Seiten Art.-Nr.: 536
Bemerkung zur Veröffentlichung This article belongs to the Special Issue Catalysis on Zeolites and Zeolite-Like Materials II.
Vorab online veröffentlicht am 05.03.2023
Schlagwörter spray drying, steam-assisted crystallization, zeolites
Nachgewiesen in Dimensions
Scopus
Web of Science
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