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SECTION A: EXACT SCIENCES

Vol. 2 No. 2 (2010)

Mesoporous aluminosilicates obtained using Triton X.

DOI
https://doi.org/10.18272/aci.v2i2.21
Submitted
July 2, 2015
Published
2010-06-01

Abstract

This work presents the preparation of mesoporous aluminum silicates from condensation of xerogel obtained from Tetraethyl orthosilicate (TEOS) and other aluminum precursos from various sources. The reagents used were aluminum nitrate (NAN) as inorganic source and the inorganic-alkoxide, Aluminun tris-secbutilate (TBA) as organometallic source. The length of the alkyl chain was evaluated in regards to its influence upon the surface area and in the generation of mesopores in the materials. Additionally, the former parameters were studied to determine their effect on the hydrothermal stability of the aluminosilicates.

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References

  1. Kresge, C. T., Leonowicz, M. E., Roth, W. J., Vartuli, J. C., and Beck, J. S. 1992. "Ordered mesoporous mole­cular sieves synthesized by a liquid-crystal template me­chanism". Nature. 359, 710-712.
  2. Beck, S., Vartuli, J. C., Roth, W. J., Leonowicz, M. E., Kresge, C. T., Schmitt, K. D., Chu, C. T. W., Olson, D. H., and Sheppard, E. W. 1992. "A new family of me­soporous molecular sieves prepared with liquid crystal templates". J. Am. Chem. Soc. 114, 10834-10843.
  3. Tanev, P. T. and Pinnavaia, T. J. 1995. "A neutral tem- plating route to mesoporous molecular sieves". Science. 267, 865-867.
  4. Zhang, W., Pauli, T. R., and Pinnavaia, T. J. 1997. "Tai­loring the framework and textural mesopores of HMS molecular sieves through an electrically neutral (Si) as­sembly pathway". Chem Mater. 9,2491-2498.
  5. Prouzet, E. and Pinnavaia, T. J. 1997. "Assembly of me- soporous molecular sieves containing wormhole motifs by a nonionic surfactant pathway: Control of pore size by synthesis temperature". Angew. Chem. Int. E. 36, 516-518.
  6. Bagshaw, S. A., Kemmitt, T., and Milestone, N. B. 1998. "Mesoporous [M]-MSU-X metallo-silicate catalysts by non-ionic polyethylene oxide surfactant templating acid [N0(N+ )X-I+] and base (N0M+I-) catalysed path­ways". Micropor. Mesopor. Mater. 22, 419-433.
  7. Zhao, D., Feng, J., Huo, Q., Melosh, N., Fredrickson, G. H., Chmelka, B. F., and Stucky, G. D. 1998. "triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores". Science. 279, 548-552.
  8. Zhao, D., Huo, Q., Feng, J., Chmelka, B. F., and Stucky, G. D. 1998. "nonionic triblock and star diblock copoly­mer and oligomeric surfactant synthesis of highly or­dered, hydrothermally stable mesoporous silica structu­res". J. Am. Chem. Soc. 120, 6024-6036.
  9. Stucky, G. D., Chmelka, B. F., Zhao, D., Melosh- Huo, Q., Feng, J. N., Yang, P., Pine, D., Margole- se, D., Lukens, W., Fredrickson, G. H., and Schmidt­Winkel, P. 1999. "Synthesis of highly ordered, hydrot­hermally stable mesoporous silica materials". Int. Patent. WO99/37705.
  10. Retuert, J., Quijada, R., Arias, V, and Yazdani- Pedram, M. 2003. "Porous silica derived from chitosan- containing hybrid composites". J. Mater. Res. 18, 487­494.
  11. Hidrobo, A. 2004. "Síntesis y caracterización de alumi- nosilicatos mesoporosos con aplicaciones en craqueo ca­talítico" Universidad de Chile, Tesis de Doctorado en Química: Santiago de Chile.
  12. Bagshaw, S. A. 1999. "Modification of [M]-MSU-X mesoporous silicate pore morphology by post-synthesis treatment". Chem. Commun. 271-272.
  13. Zhang, J., Wang, Z. L., Liu, J., Chen, Sh., and Liu, G-Y. 2003. "Self-Assembled Nanostructures". Kluwer Aca- demic/Plenum publishers: New York. USA.
  14. Corma, A., Fornes, Y., Navarro, M. T., and Perez- Pariente, J. 1994. "Acidity and stability of MCM-41 crystalline aluminosilicates". J. Catal. 148, 569-574.
  15. Chen, X., Huang, L., Ding, G., and Li, Q. 1997. "Charac­terization and catalytic performance of mesoporous mo­lecular sieves Al-MCM-41 materials". Catal. Lett. 44, 123-128.
  16. Schmidt, R., Akporiaye, D., Stoker, M., and Ellestad, O. H. 1994. "Synthesis of a mesoporous MCM-41 ma­terial with high levels of tetrahedral aluminium". Chem. Commun. 1493-1494.
  17. Hidrobo, A., Retuert, J., and Araya, P. 2003. "Stable zeolite-containing mesoporous aluminosilicates". J. Po­rous Mater. 10,231-234.
  18. Hidrobo, A., Retuert, J., and Araya, P. 2009. "Alumino- silicatos mesoporosos catalíticamente activos obtenidos usando el biopolímero quitosano como agente formador de poros". Avances en ciencias e ingenierías. 1, 37-40.
  19. Falco,M., Retuert, J.,Hidrobo, A., Covarruvias, C., Ara­ya, P., and Sedrán, U. 2009. "Catalytic performance of silica-aluminas synthesised with the help of chitosan biopolymer". Appl. Catal. A: Gen. 366, 269-274.