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

The supported Cr2O3/Al2O3 catalysts with χ-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 χ-Al2O3-like structure at high calcination temperatures. The microstructure of χ-Al2O3-provides the preservation of high dispersion and thermal stability of the active component of catalyst.