Gas phase adsorption and desorption kinetics of toluene on Ni/γ-Al2O3

Microkinetics for toluene total oxidation over CuO–CeO2/Al2O3

“…Adsorption and desorption coefficients of both Table 6. toluene and CO 2 were significantly estimated and these parameters must be taken into account while modeling the reaction over CuO-CeO 2 /Al 2 O 3 as adsorption of toluene and CO 2 significantly affects the shape and size of outlet responses. The activation energy of toluene desorption is in good agreement with activation energies obtained for desorption of toluene from Al 2 O 3 at ambient pressure during TPD experiments with values of 54 ± 5 kJ mol −1 [47]. A weak adsorption of CO 2 over pure ␥-Al 2 O 3 is reported in literature [48].…”

Kinetics of toluene hydrogenation—integrating a dynamic approach regarding catalyst activity

“…All metal-support interaction sites (S2) are occupied by toluene ) No activity if only alumina is used as catalyst [32] ) Empirical model shows the order of reaction is close to zero implying abundant amount of toluene available for conversion 4 No metallic site is vacant. All metallic sites occupied by hydrogen at the start of the reaction are gradually replaced by toluene until saturation.…”

Promotion Effects of La and Ce on Ni/γ-Al2O3 Catalysts in Hydrotreating of Crude 2-Ethylhexanol

“…Supported nickel catalysts have received extensive attentions due to their easy availability and reasonable cost compared to noble metals [1][2][3], as well as their predominant properties in hydrotreating, hydrogenation and decomposition reactions [4][5][6]. However, sintering and agglomeration of NiO often occur on c-Al 2 O 3 [7][8][9], which greatly decrease the catalytic activity.…”