Conclusions
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1.
The activity and selectivity of the bifunctional NiMNaY zeolite catalysts in the alkylation of C6H6 by ethylene can be modified by varying the nature of the Mn+ cation, the Ni2+: Mn+ ratio, the total extent of exchange of Na+, and the mode of incorporation of Ni2+ and Mn+ into the faujasites. Of zeolites of the same composition (NiCaNaY) the most effective is that prepared by consecutive substitution of Na+ in NaY by Mn+ (Ca2+) and Ni2+).
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2.
An IR spectroscopic study of the adsorption of Py, C2H4, and CO has revealed that the proton acidity, which is responsible for the activity of NiMNaY in the alkylation of benzene by olefins, is controlled mainly by the composition of the zeolite; the activity in the dimerization of ethylene is due to the nickel cations, whose state and properties depend on the composition and mode of preparation of the catalyst.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2321–2329, October, 1978.
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Isakov, Y.I., Kalinin, V.P. & Minachev, K.M. Polyfunctional zeolite catalysts 5. Catalytic properties of NiMn+NaY zeolites in the alkylation of benzene by ethylene. Russ Chem Bull 27, 2055–2062 (1978). https://doi.org/10.1007/BF00946526
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DOI: https://doi.org/10.1007/BF00946526