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CONCLUSIONS
Thus, the catalysts based on ZrO2 and CexZr(1 – x)O2
supports showed the highest activity in the reaction of
isobutane dehydrogenation in spite of low specific sur-
face area of these supports. The interaction of CeO2
with CrOx precursor and formation of particles of
α-Cr2O3 phase was found for CrOx/CeO2 system. The
formation of CrOx species that are able to reduction,
but less active in dehydrogenation reaction was
observed for chromia–alumina catalysts. It was shown
that the surface of ZrO2 and CexZr(1 – x)O2 was capable
to stabilize the active component (with its small con-
tent) in a strongly bound, highly dispersed amorphous
state. This state determined the high activity of the
catalyst in the isobutane dehydrogenation.
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ACKNOWLEDGMENTS
Appl. Surf. Sci., 2014, vol. 313, p. 654.
The authors thank A.V. Livanova for XRD studies
and Dr. E.D. Fakhrutdinova for DRS studies. This
work was supported by “The Tomsk State University
Academic D. I. Mendeleev Fund Program” grant in
2018.
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KINETICS AND CATALYSIS Vol. 59 No. 2 2018