Titania-zirconia mixed oxide aerogels as supports for hydrotreating catalysts

Water–gas shift reaction over sulfided molybdenum catalysts supported on TiO2–ZrO2 mixed oxides

“…profiles obtained for selected samples. Similarly to the earlier studies performed in other laboratories [23][24][25] also in our case the overall acidity of these supports increased with higher content of ZrO 2 in the mixture. Data presented in Table 1 indicate that the highest concentration of weak surface acid sites takes place for supports composed of 50% of TiO 2 and ZrO 2 .…”

Preparation and characterization of mesoporous titania–alumina ceramic by modified sol–gel method

“…With the addition of 20 mol% TiO 2 to Al 2 O 3 , the surface area increased, while it decreased at [TiO 2 ] > 20 mol% [9]. On the other hand, Weissman et al [10] reported that titania-zirconia mixed aerogel with high concentrations of titania was unstable. The 0.2TiO 2 -0.8Al 2 O 3 gel is appealing to explore as a catalytic support.…”

Slurry Impregnation of ZrO2 Extrudates: Controlled EggShell Distribution of MoO3, Hydrodesulfurization Activity, Promotion by Co

“…Catalysts based on ZrO 2 -supported MoO 3 exhibit many applications in reactions of industrial importance such as oxidation [1][2][3][4][5][6][7], hydrorefining [8][9][10][11][12][13][14][15][16][17], metathesis [18], isomerization [19], and water-gas shift [20], in which shaped forms of the catalysts are mostly used. However, the open literature, up to the authors' knowledge, focuses mostly on Mo deposition onto the support grains instead of a shaped form, like extrudates or tablets.…”