Conclusions
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1.
The catalytic properties of ferri- and borosilicates modified with group VIII metals and Al-containing pentasils are essentially dependent on the acid properties of the corresponding H forms of the zeolites.
The data obtained in transformations of n-hexane indicate the bifunctional character of the effect of the modified elemental silicates and pentasils.
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2.
The framework iron in the ferrisilicate determines the catalytic properties of its hydrogen and modified forms in transformations of n-hexane; out-of-lattice iron has no significant effect on the properties of these ferrisilicates.
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3.
The selectivity of transformations of n-hexane on Pt(Pd)-elemental silicates is a function of the gas medium: skeletal isomerization predominates in H2, and aromatization and cracking predominate in the absence of a carrier gas or in Ar.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 768–772, April, 1989.
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Vasina, T.V., Khelkovskaya-Sergeeva, E.G., Klyuchanskii, A.A. et al. Catalytic properties on modified elemental silicates and aluminum-containing pentasils in transformations of n-hexane. Russ Chem Bull 38, 692–695 (1989). https://doi.org/10.1007/BF00953270
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DOI: https://doi.org/10.1007/BF00953270