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Siliconizing as a method for the production of acid-resistant modifications of faujasite

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Abstract

It was shown that acid-resistant modifications of faujasite can be produced by its thermal treatment in silicon tetrafluoride vapor if the ratio of the atoms in the zeolite framework is increased as a result of such treatment to Si/Al ≥ 12. At lower degrees of isomorphous substitution of the atoms. the faujasite crystal lattice is destroyed in a 5 M solution of hydrochloric acid as a result of the low acid resistance of the aluminum-oxygen tetrahedra of the zeolite and of the imperfections in its structure.

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Authors
  1. F. M. Bobonich
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  2. Yu. G. Voloshina
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  3. V. N. Solomakha
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Additional information

L. V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Kiev. Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 32, No. 1, pp. 51–54, January–February, 1996. Original article submitted March 20, 1995.

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Bobonich, F.M., Voloshina, Y.G. & Solomakha, V.N. Siliconizing as a method for the production of acid-resistant modifications of faujasite. Theor Exp Chem 32, 47–50 (1996). https://doi.org/10.1007/BF01372542

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