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Determination of the relative adsorption coefficients and reactivity of allylbenzene, propenylbenzene, and allylcyclohexane in hydrogenation on nickel catalysts

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Conclusions

  1. 1.

    Different nickel catalysts show different susceptibilities to a change in the structure of the molecules to be hydrogenated. On Ni-B, in contrast to Ni-sk, propenylbenzene is hydrogenated four times more slowly than allylbenzene, while allylcyclohexane is hydrogenated 50% more rapidly than allylbenzene. The relative adsorption coefficient for a mixture of propenylbenzene and allylbenzene on Ni-sk is four times lower than on Ni-B and Ni-kieselguhr.

  2. 2.

    The relative adsorbability and reactivity in binary mixtures decreases in the order

    The stronger adsorbability of allylbenzene in comparison with allylcyclohexane is apparently explained by the presence of two adsorption-active groups in the allylbenzene molecule: C=C and C6H5.

  3. 3.

    The deactivating effect of Cd++ in the process of hydrogenation increases with decreasing adsorbability of the hydrocarbon on this catalyst.

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Literature cited

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    S. V. Lebedev, T. G. Koblyanskii, and A. I. Yakubchik, Zh. Russk. Khim. O-va,56, 265 (1924).

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    V. A. Kazanskii and T. G. Tatevosyan, ZhOKh,8, 1428 (1933);9, 2248 (1939).

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    L. Kh. Freidlin, N. M. Nazarova, and M. A. Abduraimova, Izv. AN SSSR, Ser. Khim.,1967, 2624.

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    A. L. Markman, Uzb. Khim. Zh., No. 5, 56 (1963).

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    A. A. Balandin, ZhOKh,15, 781 (1945).

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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1223–1227, June, 1968.

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Freidlin, L.K., Nazarova, N.M. & Abduraimova, M.A. Determination of the relative adsorption coefficients and reactivity of allylbenzene, propenylbenzene, and allylcyclohexane in hydrogenation on nickel catalysts. Russ Chem Bull 17, 1160–1163 (1968). https://doi.org/10.1007/BF01106257

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Keywords

  • Hydrogenation
  • Nickel
  • Hydrocarbon
  • Binary Mixture
  • Nickel Catalyst