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Abstract
Here we report the synergistic effect of OMS-2 catalysts tested in ethanol oxidation, and the effects produced by both the addition of an Fe modifier in the catalyst preparation stage, and the introduction of Ag on its surface by the impregnation method. To analyze the action of each component, the Fe-modified, Ag-containing OMS-2 catalysts with different Mn/Fe ratios were prepared. Combined XPS and XRF elemental analysis confirms the states and distribution of the Ag- and Fe-containing species between the surface and bulk of the OMS-2 catalysts, which form highly dispersed Ag species on the surface of 0.05Fe–OMS-2, and are also incorporated into the OMS-2 crystalline lattice. The cooperative action of Ag and Fe modifiers improves both reoxidation ability (TPO results) and the amount of adsorbed oxygen species on the catalyst surface. The introduction of Ag to the OMS-2 and 0.05 Fe–OMS-2 surface allows a high level of activity (T80 = 150–155 °C) and selectivity (SAc80 = 93%) towards the acetaldehyde formation.
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Savenko D, Velieva N, Svetlichnyi V, Vodyankina O. The influence of the preparation method on catalytic properties of Mo–Fe–O/SiO2 catalysts in selective oxidation of 1,2-propanediol. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.08.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dotsenko S, Verkhov V, Svetlichnyi V, Liotta L, La Parola V, Izaak T, Vodyankina O. Oxidative dehydrogenation of ethanol on modified OMS-2 catalysts. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ebert DY, Savel’eva AS, Dorofeeva NV, Vodyankina OV. FePO4/SiO2 Catalysts for Propylene Glycol Oxidation. KINETICS AND CATALYSIS 2018. [DOI: 10.1134/s0023158417060040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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