Conclusions
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1.
A study was made of the reaction of cyclohexane, cyclohexene, and 1,4-cyclohexadiene with zeolites LiY, NaY, KY, RbY, CsY, BeY, MgY, CaY, LaY, and NdY. The dehydrogenation of cyclohexane and cyclohexene on the polyvalent forms of zeolite Y is possible with a simultaneous cracking of a portion of the starting hydrocarbon, while benzene is formed to different degree from 1,4-cyclohexadiene by the direct dehydrogenation and disproportionation reactions of 1,4-cyclohexadiene.
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2.
The ability of hydrocarbons to undergo various transformations, including dehydrogenation, increases when going from cyclohexane to cyclohexene, and then to 1,4-cyclohexadiene.
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3.
The activity of zeolite Y in the dehydrogenation of cyclohexane, cyclohexene, and 1,4-cyclohexadiene increases when the univalent cations are replaced by di- and trivalent cations, which is explained by a corresponding enhancement in the acidity of the cation-substituted zeolites.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 128–133, January, 1981.
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Kharlamov, V.V., Starostina, T.S. Transformations of cyclic hydrocarbons on cationic forms of zeolite Y. Russ Chem Bull 30, 107–111 (1981). https://doi.org/10.1007/BF00962264
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DOI: https://doi.org/10.1007/BF00962264