Conclusions
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1.
Synthetic zeolites CaA, CaX, CaY, DY, HM, and nickel-containing catalysts based on these zeolites show high activity in the displacement of the double bond in n-butenes. The most active of the catalysts studied are Ni/NaY, CaX, 5% Ni/DY, and 5% Ni/HM. The activity of type Y zeolite increases with increasing degree of exchange of Na+ for Ni2+.
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2.
In addition to the displacement of the double bond, on a number of catalysts reactions leading to the formation of propylene and higher hydrocarbons, consisting chiefly of amylenes, as well as cis-trans-isomerization of n-butenes, take place.
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3.
The hypothesis of primary formation of butene-2 on an ion-exchange nickel zeolite catalyst in the dimerization of ethylene was confirmed.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 57–63, January, 1970.
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Lapidus, A.L., Isakov, Y.I., Avetisyan, R.V. et al. Isomerization of n-butenes on nickel zeolite catalysts. Russ Chem Bull 19, 53–58 (1970). https://doi.org/10.1007/BF00913923
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DOI: https://doi.org/10.1007/BF00913923