New redox deposition-precipitation method for preparation of supported manganese oxide catalysts |
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| Authors: | Izaskun Barrio Iñigo Legórburu Mario Montes María Isabel Domínguez Miguel A’ngel Centeno José Antonio Odriozola |
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| Affiliation: | (1) Grupo de Ingeniería Química, Departamento de Química Aplicada, Facultad de Química de San Sebastián, Universidad del País Vasco, Paseo Manuel de Lardizabal 3, 20018 San Sebastián, Spain;(2) Departamento de Química Inorgánica e Instituto de Ciencia de Materiales Sevilla, Centro Mixto CSIC-Universidad de Sevilla, Avda. Américo Vespucio s/n, 41092 Sevilla, Spain |
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| Abstract: | ![]()
A new preparation method has been developed to produce homogeneous coatings of manganese compounds on alumina-coated monoliths by redox deposition-precipitation using acetone as solvent. The deposition is produced by reduction of manganese permanganate with ethanol. The Lewis acid sites on the alumina catalyze this reaction. Thus, the precipitation is produced preferentially on the surface of the monolith and not in the bulk of the solution. Monoliths prepared by this method are very active for the complete oxidation of oxygenated volatile organic compounds (VOCs). These monoliths consist of a mixture of complex phases including aluminum, sulfated alumina, potassium sulfate and manganese oxide. |
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| Keywords: | metallic monoliths supported MnOx catalysts VOCs abatement redox deposition-precipitation synthesis |
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