Document Details

Document Type : Article In Journal 
Document Title :
Building concept inspired by raspberries: From microporous zeolite nanocrystals to hierarchically porous assemblies
Building concept inspired by raspberries: From microporous zeolite nanocrystals to hierarchically porous assemblies
 
Document Language : English 
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 
ISSN : 1387-1811 
Journal Name : MICROPOROUS AND MESOPOROUS MATERIALS 
Volume : 229 
Issue Number : 229 
Publishing Year : 1437 AH
2016 AD 
Article Type : Article 
Added Date : Sunday, August 6, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
M KlumppKlumpp, M Researcher  
L ZengZeng, L Researcher  
A WeberWeber, A Researcher  

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