Formation of structural specific properties of supported Cr₂O₃/Al₂O₃ catalysts for the dehydrogenation of isobutane to isobutylene

The supported Cr2O3/Al2O3 catalysts with chi-Al2O3-like structure were developed for dehydrogenation of isobutane to isobutylene. The catalysts are characterized by higher catalytic activity and thermal stability during the catalytic reaction at higher temperatures. The high thermal stability of the support and supported catalyst is due to the addition of silica which leads to the stabilization of chi-Al2O3-like structure at high calcination temperatures. The microstructure of chi-Al2O3-provides the preservation of high dispersion and thermal stability of the active component of catalyst. (C) 2019 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the III All-Russian Conference (with International Participation) "Hot Topics of Solid State Chemistry: From New Ideas to New Materials".