Template‐Free Synthesis of Hierarchical SSZ‐13 Microspheres with High MTO Catalytic Activity

Hierarchical SSZ‐13 microspheres, with abundant mesoporous channels, have been successfully synthesized by addition of calcined SSZ‐13 crystals in the starting gel in the absence of any organic templates. This strategy not only remarkably reduces the production cost and environmental pollution, but...

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Bibliographic Details
Published in:Chemistry : a European journal 2018-05, Vol.24 (29), p.7428-7433
Main Authors: Bing, Liancheng, Tian, Aixiu, Wang, Fang, Yi, Kaifeng, Sun, Xingyuan, Wang, Guangjian
Format: Article
Language:English
Subjects:
abundant mesopores
Acidity
Ammonia
Catalysis
Catalysts
Catalytic activity
Chemical synthesis
Chemistry
Crystallization
Crystals
methanol-to-olefin reaction
Microspheres
organic template-free
Pollution control
Propylene
SSZ-13 microspheres
Zeolites
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Summary:Hierarchical SSZ‐13 microspheres, with abundant mesoporous channels, have been successfully synthesized by addition of calcined SSZ‐13 crystals in the starting gel in the absence of any organic templates. This strategy not only remarkably reduces the production cost and environmental pollution, but also significantly decreases the crystallization time as well as evidently reducing the zeolite crystal sizes in many cases. The synthesized sample was characterized by XRD, BET, ICP, SEM, TEM, TG, and NH3‐TPD, which indicates that the organic template free synthesized SSZ‐13 exhibits high crystallinity, textural properties, and acidity. Moreover, the synthesized hierarchical SSZ‐13 catalyst shows outstanding performance in the methanol‐to‐olefin (MTO) reaction, with slightly higher ethylene plus propylene selectivity and prolonged catalyst lifetime as compared to the templated SSZ‐13 catalyst. Green zeolite: Hierarchical SSZ‐13 microspheres with abundant mesoporous channels were synthesized by addition of calcined SSZ‐13 crystals in the starting gel in the absence of any organic templates.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201705784