Paka Swamy
chemistry
June 0
The synthesis of metal oxide catalysts using the sol-gel method and their characterisation using various analytical techniques are the main subjects of this work. Several precursors, including tetraethyl orthosilicate, isopropyl alcohol, zirconyl nitrate hydrate, and ammonium heptamolybdate tetrahydrate, were combined to create the catalysts. In this investigation, X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FT-IR) were used as characterisation methods. The catalysts' crystalline phases were identified, and their atomic scale properties were ascertained, using XRD analysis. The outcomes showed that the produced catalysts had tetragonal phase ZrO2 and -MoO3. By comparing the XRD patterns with reference data, the crystallinity and purity of the ZrO2 phase were validated. The catalysts' molecular structures and functional groups were examined using FT-IR spectroscopy. The spectra showed distinctive peaks for Mo=O stretching, Zr-O-Zr asymmetric stretching, and Zr-O-O stretching. It was also proven that the catalysts contained the SiO2 phase. The FT-IR data also showed that the strength and sharpness of the peaks, which represent changes in crystallinity, are affected by the temperature of the calcination process. Overall, the sol-gel approach was used to successfully synthesise metal oxide catalysts in this study, and their characteristics were determined using XRD and FT-IR methods. The findings shed important light on the catalysts' structural and textural characteristics, which are essential for comprehending how well they function as catalysts in a variety of processes.
392- 413
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