Browsing by Author "Mihajlova I."

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    Slag-based materials as catalysts in oxidation reactions
    (2014-01-01) Mihajlova I.; Radoykova T.; Ivanov G.; Stoyanova D.; Mehandjiev D.
    The ability to create new active catalysts for complete oxidation of carbon monoxide and organic compounds on the basis of the metallurgical slag for waste gas purification was proven. The procedure for the synthesis of the catalysts includes only acid and thermal activation of the metallurgical slag, during which in addition to increasing the catalytic activity, the specific surface area is also increased several times. ICP-OES analysis, Differential thermal analysis (DTA), Thermogravimetric analysis (TGA), X-ray diffraction (XRD) measurements and Fourier transform infrared (FTIR) spec-troscopy have been used for the study of the composition and structure of the resulting materials, and the processes of phase formation. The textural properties and the chemical composition of the surface have been investigated by Scanning electron microscopy (SEM), BET analysis and X-ray photoelectron spectroscopy (XPS). The catalysts obtainedfrom metal-lurgical slag can be successfully used for purification of waste gases in industry and transport.