Synthesis of mesoporous zeolite

Details Synthesis of mesoporous zeolite Synthesis of mesoporous zeolite

2006-02-14

2006-02-14

Sample, David (Department: 1755)

Chemistry of inorganic compounds

Zeolite

With change of synthesized zeolite morphology

C423SDIG022, C502S060000

Reexamination Certificate

active

06998104

ABSTRACT:
Silicic and aluminum sources as raw materials of zeolite are mixed with carbon aerogel. The mixture is subjected to hydrothermal reaction for synthesis of zeolite, while an aqueous solution, which contains sodium hydroxide and tetrapropylammonium bromide, is being dropped to the mixture. After completion of the hydrothermal reaction, the zeolite-supporting aerogel is washed, dried and then heat-treated for oxidative extrusion of the carbon aerogel. Since the carbon aerogel is used as a template, the synthesized zeolite has the morphology that traces of spheroidal particles of the carbon aerogel remain as mesopores.

REFERENCES:
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patent: 2002/0034471 (2002-03-01), Jacobsen et al.
patent: 2002/0192155 (2002-12-01), Sterte et al.
patent: 2001-163699 (2001-06-01), None
Tao et al., “ZSM-5 Monolith of Uniform Mesoporous Channels”, Journal of the American Chemical Society, April 23, 2003, vol. 125, No. 20, pp. 6044-6045.
Jacobsen et al., “Mesoporous Zeolite Single Crystals”, Journal of the American Chemical Society, Jul. 6, 2000, vol. 122, No. 26, pp. 7116-7117.
Ogura et al., “Formation of Uniform Mesorpores in ZSM-5 Zeolite through Treatment in Alkaline Solution”, Chem. Lett., pp. 882-883, (2000).
Suzuki et al., “Change in Pore Structure of MFI Zeolite by Treatment with NaOH Aqueous Solution”, Microporous and Mesoporous Materials, 43, pp. 83-89, (2001).

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