Conclusions
-
1.
The influence of additions of oxides of La, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb or Y and their concentrations (0–5%) on the properties of an aluminochromopotassium catalyst (ACP), containing 13% Cr2O3 and 1.5% K2O, in the process of dehydrogenation of isopentane to isoamylines at atmospheric pressure was investigated.
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2.
Most of the REE oxides in amounts of 0.9% in an ACP catalyst, with the exception of Sm and Dy, promote an increase in their original dehydrogenating activity.
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3.
Under the conditions of testing (550°, volume velocity 1 h−1, 20-minute experiments with periodic regenerations), better results were achieved for ACP catalysts containing 0.9% Nd, La, or Gd oxide (the total yield of isoamylines and isoprene was more than 45%, calculated on the basis of the isopentane passed through).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 1988–1993, September 1968.
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Sterligov, O.D., Medvedev, V.N., Khodakov, Y.S. et al. Hydrogenation of isopentane on aluminochromium catalysts promoted by rare earth oxides. Russ Chem Bull 17, 1896–1900 (1968). https://doi.org/10.1007/BF00904979
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DOI: https://doi.org/10.1007/BF00904979