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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 Type
Dr Grade
Email
M Klumpp
Klumpp, M
Researcher
L Zeng
Zeng, L
Researcher
A Weber
Weber, A
Researcher
Files
File Name
Type
Description
42485.pdf
pdf
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