Substitution of one or two molybdenum atoms of the Keggin unit by vanadium causes a strong decrease of the rate of methacrylic acid oxidation while the rate of ...

oxidation of methacrylic acid is strongly reduced which leads to an increase of the selectivity towards methacrylic acid. The effect ofvanadium on selectivity ...

Effects of Cs and V on heteropolyacid catalysts in methacrolein oxidation · L. M. Deuβer, J. Gaube, +1 author. H. Hibst · Published 1996 · Chemistry · Studies in ...

Jun 26, 1998 · The substitution of Mo by V leads to a strong decrease of the rate of consecutive methacrylic acid oxidation. Salification of the free acid by ...

Kaolin Supported Heteropoly Acid Catalysts for Methacrolein Oxidation: Insights into the Carrier Acidity Effect on Active Components ... Effects of V, Cs ...

Substitution of Mo by V causes a strong decrease of the ratio of reaction rate constants of reoxidation and methacrolein oxidation. The substitution of Mo by V ...

Jul 16, 2024 · Previous research has shown that partially substituting Mo with V in the primary Keggin structure enhances the catalytic activity of MAL ...

The present study investigates modified Mo/V/W mixed oxides as a possible alternative for state of the art heteropoly acid catalysts (HPA) in the partial ...

XRD and BET analysis showed that the addition of copper could increase the crystalline size of catalysts, prevent the accumulation of catalyst crystal and make ...

Effects of Cs and V on heteropolyacid catalysts in methacrolein oxidation. ... Direct oxidation of isobutane into methacrylic acid and methacrolein over Cs2.