Catalytic dehydrogenation of isobutane over ordered mesoporous Cr2O3–Al2O3 composite oxides

A series of ordered mesoporous Cr2O3–Al2O3 composite oxides synthesized via improved one-pot evaporation induced self-assembly strategy were investigated as the catalysts for catalytic dehydrogenation of isobutane. These mesoporous catalysts with good structural properties and thermal stability performed excellent catalytic properties. Besides, the effect of the ordered mesopore structure on improving catalytic properties was also studied. Compared with non-mesoporous catalyst, the current mesoporous catalyst could accommodate the gaseous reactant with more “accessible” active sites. Therefore, the present materials were considered as promising catalyst candidates for catalytic dehydrogenation of isobutane.

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► Ordered mesoporous Cr2O3–Al2O3 composite oxides were prepared by EISA method.
► These materials were utilized as catalysts for dehydrogenation of isobutane.
► The effect of Cr content on the catalytic activity was investigated.
► The role of mesopore in promoting catalytic activity was studied.
► These mesoporous catalysts possessed excellent catalytic stability.