Conclusions
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1.
The 1-pentene-pentene and cis-2-pentene/trans-2-pentene ratios in the reaction products of the hydrogenation of piperylene on the Ca2+ and La3+ forms of various zeolites are close to the values characteristic of the successive addition of hydrogen ions to unsaturated bonds. As the quantum-chemical calculation of the heats of reaction has shown, a hydride ion is added to the piperylene molecule first.
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2.
The hydrogenating activity of zeolites is determined by the electron affinity of the metal cation.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1497–1502, July, 1980.
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Kharlamov, V.V., Kharatishvili, N.G., Borisov, Y.A. et al. Hydrogenation of piperylene on cationic forms of various zeolites. Russ Chem Bull 29, 1044–1049 (1980). https://doi.org/10.1007/BF00949151
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DOI: https://doi.org/10.1007/BF00949151