Effect of the additives PVP and MTS on structural properties and synthesis mechanism of Beta zeolite

LIU Bin; DONG Heng; SUN Ji-Hong

Volume 45 Issue 4

Apr. 2017

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Article Navigation > Journal of Fuel Chemistry and Technology > 2017 > 45(4): 468-474

LIU Bin, DONG Heng, SUN Ji-Hong. Effect of the additives PVP and MTS on structural properties and synthesis mechanism of Beta zeolite[J]. Journal of Fuel Chemistry and Technology, 2017, 45(4): 468-474.

Citation:

LIU Bin, DONG Heng, SUN Ji-Hong. Effect of the additives PVP and MTS on structural properties and synthesis mechanism of Beta zeolite[J]. Journal of Fuel Chemistry and Technology, 2017, 45(4): 468-474.

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Effect of the additives PVP and MTS on structural properties and synthesis mechanism of Beta zeolite

Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, China

Funds:

the National Natural Science Foundation of China 21276005

the National Natural Science Foundation of China 21576005

the Beijing Municipal Natural Science Foundation 2152005

More Information

Corresponding author: SUN Ji-Hong, E-mail:jhsun@bjut.edu.cn
Received Date: 2017-02-24
Rev Recd Date: 2017-03-07

Available Online: 2021-01-23

Publish Date: 2017-04-10

Abstract

Abstract

Beta zeolites were successfully synthesized via hydrothermal method using sodium aluminate as aluminium source, silica sol (Ludox) as silicon source and TEAOH as template, respectively. The effects of different additives polyvinyl pyrrolidone (PVP) and Methyltriethoxysilane (MTS) on their structural properties and synthesis mechanism were investigated in detail by various characterizations, such as XRD, TEM, BET, ICP, ²⁹Si-NMR and NH₃-TPD method. Also, their catalytic performances were evaluated through catalytic cracking of cumene. The results showed that the beta zeolite obtained in the PVP-added system presented a better crystallinity, higher Si/Al molar ratio (25.68), and larger surface area (772 m²/g). Comparably, the MTS-effected samples revealed a larger surface area (657 m²/g), higher Si/Al molar ratio (25.76), but lower crystallinity and smaller particle sizes (around 160-320 nm). Moreover, both of them exhibited a good catalytic activity for cumene cracking due to the existences of abundant and strong acid content.
- PVP,
- MTS,
- Beta zeolite,
- catalytic cracking,
- structural characterization,
- hydrothermal synthesis

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References(16)

References

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