Chromia/zirconia catalysts with Cr content exceeding the monolayer. A comparison with chromia/alumina and chromia/silica for isobutane dehydrogenation

Dehydrogenation of Propane in the Presence and Absence of CO2 Over β-Ga2O3 Supported Chromium Oxide Catalysts

“…Such species have been previously proposed as the active sites for the dehydrogenation of light alkanes in the case of CrO x / Al 2 O 3 [11,12]. Moreover, the deposition of Cr decreases the strength of Lewis acid sites on the surface of the catalyst, which was confirmed by quantitative IR studies of pyridine adsorption (figure 1).…”

Role of CO2 in dehydrogenation of propane over CrOX/SiO2 catalyst with low Cr content

“…Such Cr 3+ species have been assigned as the active sites for the dehydrogenation of light alkanes [18]. [20] Catalytic and in-situ DRS studies Table 2 summarizes the dehydrogenation results obtained in the presence and absence of CO 2 over the CrO x /SiO 2 in the temperature range between 673 and 873 K. In that temperature range, a promoting role of CO 2 on the conversion of propane and the yield of propene is found.…”

Intrinsic Kinetics of Dehydrogenation of Isobutane over K2O-CuO-Cr2O3/Al2O3 Catalyst

“…As we all knew, direct dehydrogenation of isobutane had already realized industrialization, and chromium supported on alumina or silica were used as the industrial catalysts. The structure and activity of Cr catalysts had been researched extensively in an attempt to understand better catalytic process of the catalysts [3][4][5].…”