Fourier Transform Infrared Spectroscopic, X-Ray Fluorescence and X-Ray Diffraction Characterization of Sodium Bentonite Clay and Kaolin clay, and their Potentials as Catalysts for Plastic Waste Valorization

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Author(s): Awinash Kumar*, Pradip Lingfa.

Journal Name: Current Organocatalysis

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Introduction: Sodium bentonite and kaolin are respectively the montmorillonite and kandite group of clays. Clay has important aspects of recycling plastic wastes as a catalyst. This study explains the Fourier Transform Infrared, X-Ray Fluorescence and X-Ray Diffraction Characterization of commercially available sodium bentonite clay and kaolin clay.

Materials and Methods: Kaolin has been used as a catalyst for an alteration of plastic wastes in-to useful hydrocarbons but sodium bentonite has limited exploration. The functional groups of aluminum monoxide, a1uminium hydroxide, and silicon monoxide were explored by Fourier Transform Infrared. The main elements of kaolin and sodium bentonite, silica, aluminum oxide, potassium oxide, ferric oxide, and titanium dioxide were found the difference of 7.33%, 23.09%, 0.55%, 11.40%, and 1.35% respectively with rest of impurities identified by X-Ray Fluorescence.

Results and Discussion: The mineral phase in the presence of chlorite, cristobalite, halloysite, and quartz of kaolin clay was identified by X-Ray Diffraction. Special peaks of kaolin and sodium bentonite were obtained through X-Ray Diffraction and Fourier Transform Infrared spectra. The maximum average crystalline sizes for kaolin and sodium bentonite are 42.47 nm and 26.55 nm respectively.

Conclusion: Compound class of alcohols and phenols have been traced in-between absorption 3620 cm-1 to 3697 cm-1 of O-H stretching for both samples and Si-O-H stretching was found for sodium bentonite at 3695.17 cm-1. Sodium bentonite shows better acceptance of performance characteristics as a catalyst. The experimental study also explains the comparative analysis of kaolin clay and sodium bentonite clay useful for thermo-catalytic waste valorization.

Keywords: FT-IR, Kaolin clay, Sodium bentonite clay, XRF, XRD, Wate valorization

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(E-pub Ahead of Print)
DOI: 10.2174/2213337206666191018104929