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Issue 18, 2001
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Templating of high-silicazeolites by tetrahydrofuran in the Na2O–SiO2–Al2O3–H2O system

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Abstract

The spontaneous crystallization of high-silica MOR, FER, MFI, MTN zeolites was investigated in the reactant system tetrahydrofuran (THF)–Na2O–SiO2–Al2O3H2O in the temperature range 180–230°C. 13C CP MAS NMR spectra, TG/DTG/DTA and energy dispersive X-ray (EDX) analysis were used to characterize the molecules of THF trapped in the channels or the cages of the as-synthesized zeolites. The regular patterns and the distinct shift of the resonance peaks for THF in 13C MAS NMR spectra, and the higher temperatures for THF escaping from the as-synthesized zeolites confirm that THF interacts strongly with the framework of the zeolites, playing the role of a template. The mechanism of the interaction between the framework and THF is also discussed.

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Article information


Submitted
10 Apr 2001
Accepted
25 Jun 2001
First published
14 Aug 2001

Phys. Chem. Chem. Phys., 2001,3, 4164-4169
Article type
Paper

Templating of high-silica zeolites by tetrahydrofuran in the Na2O–SiO2–Al2O3–H2O system

B. Qian, G. Guo, X. Wang, Y. Zeng, Y. Sun and Y. Long, Phys. Chem. Chem. Phys., 2001, 3, 4164
DOI: 10.1039/B103230P

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