Building concept inspired by raspberries: From microporous zeolite nanocrystals to hierarchically porous assemblies

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Klumpp M, Zeng L, Al-Thabaiti SA, Weber AP, Schwieger W
Zeitschrift: Microporous and Mesoporous Materials
Verlag: Elsevier
Jahr der Veröffentlichung: 2016
Band: 229
Seitenbereich: 155-165
ISSN: 1387-1811


Abstract


Hierarchically porous zeolites offer great potential in catalytic and sorptive processes due to the enhanced mass transport properties by the increased diffusivity of the molecules from the bulk phase to the final active sites or sorption sites, respectively. In this contribution we present a simple, 3-step bottom-up preparation route yielding binder-free spherical zeolite material exhibiting a hierarchical pore system. This process consists of zeolite synthesis, aggregation and recrystallization. In this contribution, the process is demonstrated on silicalite-1 (MFI-type zeolite) as a model system. The aggregation process was realized by special spray drying of a complete reaction mixture containing pre-synthesized nanocrystals. The spray drying process results in spherical aggregates which contain amorphous silica species originating from the unconverted part of the zeolite synthesis mixture and which are acting as an intermediate binder. Steam-assisted crystallization was then applied to convert these amorphous species into crystalline zeolite enabling the overall process to utilize 100% of the initial silicon from the zeolite synthesis mixture. (C) 2016 Elsevier Inc. All rights reserved.



FAU-Autoren / FAU-Herausgeber

Klumpp, Michael
Lehrstuhl für Chemische Reaktionstechnik
Schwieger, Wilhelm Prof. Dr.
Professur für Technische Chemie (Reaktionstechnik)


Autor(en) der externen Einrichtung(en)
King Abdulaziz University (KAU) / جامعة الملك عبد العزيز
Technische Universität Clausthal


Zitierweisen

APA:
Klumpp, M., Zeng, L., Al-Thabaiti, S.A., Weber, A.P., & Schwieger, W. (2016). Building concept inspired by raspberries: From microporous zeolite nanocrystals to hierarchically porous assemblies. Microporous and Mesoporous Materials, 229, 155-165. https://dx.doi.org/10.1016/j.micromeso.2016.04.012

MLA:
Klumpp, Michael, et al. "Building concept inspired by raspberries: From microporous zeolite nanocrystals to hierarchically porous assemblies." Microporous and Mesoporous Materials 229 (2016): 155-165.

BibTeX: 

Zuletzt aktualisiert 2018-11-08 um 01:54