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Cooperative Structure-Directing Effects in the Synthesis of a High-Silica Zeolite Mazzite Analogue

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DOI: 10.4236/msa.2012.35045    3,295 Downloads   5,439 Views  

ABSTRACT

A zeolite Mazzite (MAZ) analogue with high silica content has been synthesized from a Na2O-Al2O3-SiO2-morpholine-H2O system. The crystal morphology of this MAZ analogue was found to consist of spherical agglomerates of diameter up to 17 μm. It has been unequivocally demonstrated that zeolite Mordenite (MOR) or amorphous material was produced instead in the absence of either morpholine or Na+. Associated phases indicate that the MAZ may be a “intermediate phase” between the crystallization fields of zeolites Analcime (ANA) and MOR. Thus, the zeolite MAZ analogue is seemingly derived from the cooperative structure-directing effect of the organic molecule morpholine and the inorganic cation Na+. The results of CHN elemental analyses as well as of thermogravimetric (TG) analyses confirmed that morpholine had been incorporated into the zeolitic structure.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Q. Shi, J. Yu, Z. Song and X. Kang, "Cooperative Structure-Directing Effects in the Synthesis of a High-Silica Zeolite Mazzite Analogue," Materials Sciences and Applications, Vol. 3 No. 5, 2012, pp. 306-309. doi: 10.4236/msa.2012.35045.

References

[1] E. Galli, “Mazzite, A Zeolite,” Crystal Structure Communications, Vol. 3, No. 2, 1974, pp. 339-344.
[2] D. W. Breck and G. W. Skeels, “Silicon Substituted Zeolite Compositions and Process for Preparing Same,” US Patent No. 4503023, 1985.
[3] M. K. Rubin, C. J. Plank and E. J. Rosinski, “Synthesis of Zeolite ZSM-4,” US Patent No. 4021447, 1977.
[4] E. M. Flanigen and E. R. Kellberg, “Synthetic Crystalline Zeolite and Process for Preparing Same,” US Patent No. 4241036, 1980.
[5] A. J. Perrotta, C. Kirby, B. R. Mitchell and E. R. Tucci, “The Synthesis, Characterization, and Catalytic Activity of Omega and ZSM-4 Zeolites,” Journal of Catalysis, Vol. 55, No. 2, 1978, pp. 240-249. doi:10.1016/0021-9517(78)90210-5
[6] V. Solinas, R. Monaci, B. Marongiu and L. Forni, “Isomerisation of 1-Methylnaphthalene over Ω-Zeolite,” Applied Catalysis, Vol. 5, No. 2, 1983, pp. 171-177. doi:10.1016/0166-9834(83)80130-4
[7] H. Xu, P. Dong, L. Liu, J. G. Wang, F. Deng and J. X. Dong, “Synthesis and Characterization of Zeolite MAZ in Na2O-Al2O3-SiO2-Piperazine-H2O,” Journal of Porous Materials, Vol. 14, No. 1, 2007, pp. 97-101. doi:10.1007/s10934-006-9013-2
[8] S. Yang and N. P. Evmiridis, “Synthesis of Omega Zeolite Without Use of Tetramethylammonium(TMA) Ions,” Studies in Surface Science and Catalysis, Vol. 84, 1994, pp. 155-162. doi:10.1016/S0167-2991(08)64109-9
[9] B. De Witte, J. Patarin, J. L. Guth and T. Cholley, “Synthesis of Mazzite-Type Zeolites in the Presence of Organic Solvents: Study of the Structure Directing Role of p-Dioxane,” Microporous Materials, Vol. 10, No. 4-6, 1997, pp. 247-257. doi:10.1016/S0927-6513(97)00013-8
[10] A. Burton and S. Elomari, “SSZ-60: A New Large-Pore Zeolite Related to ZSM-23,” Chemical Communications, No. 22, 2004, pp. 2618-2619. doi:10.1039/b410010g
[11] M. Ito, Y. Shimoyama, Y. Saito, Y. Tsurita and M. Otake, “Structure of an Aluminosilicophosphate,” Acta Crystallographica, Vol. C41, No. 12, 1985, pp. 1698-1700.
[12] L. Marchese, A. Frache, E. Gianotti, G. Martra, M. Causa and S. Coluccia, “ALPO-34 and SAPO-34 Synthesized by Using Morpholine as Templating Agent,” Microporous and Mesoporous Materials, Vol. 30, No. 1, 1999, pp. 145-153. doi:10.1016/S1387-1811(99)00023-2
[13] J. X. Dong, X. Q. Tong, J. Y. Yu, H. Xu, L. Liu and J. P. Li, “Synthesis of Large Single Crystals of a Clathrate Compound MTN (a Zeolite-Like Material) by the Vapor-Phase Method,” Materials Letters, Vol. 62, No. 1, 2008, pp. 4-6. doi:10.1016/j.matlet.2007.04.058
[14] A. B. Pinar, R. García, M. Arranz and J. Pérez-Pariente, “Co-Directing Role of Template Mixtures in Zeolite Synthesis,” Studies in Surface Science and Catalysis, Vol. 170, 2007, pp. 383-388. doi:10.1016/S0167-2991(07)80864-0
[15] M. M. J. Treacy and J. B. Higgins, “Collection of Simulated XRD Powder Patterns for Zeolites,” 5th Edition, Elsevier, Amsterdam, 2007.

  
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