Direct synthesis
of self-assembled ZSM-5 microsphere with controllable mesoporosity and its enhanced LDPE cracking properties
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Type
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Journal
Article
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Author
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Jian
Ding
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Author
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Jiangbo
Hu
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URL
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Volume
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6
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Issue
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45
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Pages
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38671-38679
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Publication
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RSC
Advances
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Date
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2016/04/18
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Abstract
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Self-assembled
mesoporous ZSM-5 microspheres (∼5 μm),
which are composed of inter-growthed primary nano-strips, were directly
synthesized using n-hexylamine as the single template. The mesopore
distribution can easily be controlled by adjusting the size of primary
particles via modulating the alkalinity of the synthesis gel.
The samples obtained by varying Na2O/SiO2 molar ratios from 0.07 to 0.15 were denoted as ZM-X (X = 1–5). The ZM-X samples were characterized by techniques including XRD, TEM, SEM, N2 adsorption–desorption and FTIR. Researchers observed that ZM-3 exhibits a uniform mesopore distribution around 10 nm and possesses the largest amount of external acid sites, which lead to the remarkably enhanced catalytic performance in polyolefin cracking. They propose a possible growth mechanism of self-assembled ZSM-5 microspheres directed by n-hexylamine. |
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