Abstract
The hydrothermal conversion of FAU zeolite into aluminous MTN zeolite is described here. In the presence of both benzyltrimethylammonium hydroxide (BTMAOH) and sodium chloride (NaCl) the highly crystalline and pure MTN zeolites with Si/Al ratios of 21-23 could be obtained from the hydrothermal conversion of FAU zeolite. Based on powder XRD refinement and 13C CP/MAS NMR spectra, BTMA+ ions were not present in cages of the obtained zeolites, but TMA+ ions existed instead. It means that BTMAOH underwent degradation during the conversion. Moreover, the effects of Si/Al ratio of starting FAU zeolite, synthesis parameters (BTMAOH/SiO2 and H2O/SiO2 ratios) and the addition of alkali metal chlorides on the hydrothermal conversion of FAU zeolite into MTN zeolite are discussed. As compared to amorphous SiO2/γ-Al2O3, which produced impurity, the hydrothermal conversion of FAU zeolite showed a fast crystallization rate and a high selectivity to MTN zeolite formation. These phenomena indicate that the assembly of locally ordered aluminosilicate species coming from the decomposition or dissolution of FAU zeolite should be taking part in the conversion process.
Similar content being viewed by others
References
C.S. Cundy, P.A. Cox, Microporous Mesoporous Mater. 82, 1 (2005). doi:10.1016/j.micromeso.2005.02.016
S. Khodabandeh, M.E. Davis, Microporous Mater. 12, 347 (1997). doi:10.1016/S0927-6513(97)00083-7
Y. Kubota, H. Maekawa, S. Miyata, T. Tatsumi, Y. Sugi, Microporous Mesoporous Mater. 101, 115 (2007). doi:10.1016/j.micromeso.2006.11.037
H. Jon, K. Nakahata, B. Lu, Y. Oumi, T. Sano, Microporous Mesoporous Mater. 96, 72 (2006). doi:10.1016/j.micromeso.2006.06.024
H. Jon, S. Takahashi, H. Sasaki, Y. Oumi, T. Sano, Microporous Mesoporous Mater. 113, 56 (2008)
H. Jon, N. Ikawa, Y. Oumi, T. Sano, Chem. Mater. (in press) doi:10.1021/cm8002657
B.P. Pelrine U.S. Patent 4,259,306 (1981)
F.G. Dwyer, E.E. Jenkins, U.S. Patent 4,287,166 (1981)
J.L. Schlenker, F.G. Dwyer, E.E. Jenkins, W.J. Rohrbaugh, G.T. Kokotailo, W.M. Meier, Nature 294, 340 (1981). doi:10.1038/294340a0
H. Gies, F. Liebau, H. Gerke, Angew. Chem. Int. Ed. Engl. 21, 206 (1982). doi:10.1002/anie.198202061
Y. Long, H. He, P. Zheng, G. Wu, B. Wang, J. Incl. Phenom. 5, 355 (1987). doi:10.1007/BF00665368
X. Tang, Y. Sun, T. Wu, L. Wang, L. Fei, Y. Long, J. Chem. Soc. Faraday Trans. 89, 1839 (1993). doi:10.1039/ft9938901839
A. Moini, K.D. Schmitt, R.F. Polomski, Zeolites 18, 2 (1997). doi:10.1016/S0144-2449(96)00128-5
U. Deforth, K.K. Unger, F. Schüth, Microporous Mater. 9, 287 (1997). doi:10.1016/S0927-6513(96)00118-6
B. Qian, G. Guo, X. Wang, Y. Zeng, Y. Sun, Y. Long, Phys. Chem. Chem. Phys. 3, 4164 (2001). doi:10.1039/b103230p
M. Song, X. Wang, W. Zhou, H. He, Y. Sun, T. Wu et al., J. Solid. State. Chem. 164, 19 (2002). doi:10.1006/jssc.2001.9434
D.C. Lin, H.Y. He, W.Z. Zhou, Y.C. Long, Microporous Mesoporous Mater. 86, 152 (2005). doi:10.1016/j.micromeso.2005.07.023
F. Izumi, T. Ikeda, Mater. Sci. Forum 321–324, 198 (2000)
F. Izumi, R.A. Dilanian, Recent Research Developments in Physics, vol. 3, Part II, (Transworld Research Network, Trivandrum, 2002), p. 699
K. Momma, F. Izumi, Comm. Crystallogr. Comp. IUCr Newslett. 7, 106 (2006)
S.L. Burkett, M.E. Davis, Chem. Mater. 7, 920 (1995). doi:10.1021/cm00053a017
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sasaki, H., Jon, H., Itakura, M. et al. Hydrothermal conversion of FAU zeolite into aluminous MTN zeolite. J Porous Mater 16, 465–471 (2009). https://doi.org/10.1007/s10934-008-9220-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10934-008-9220-0