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Preparation and Characterization of THPC Modified Montmorillonite

Yue Zhao

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Abstract

Quaternary phosphonium salt,tetrakis-(hydroxymethyl) phosphonium chloride,was used as intercalating agent to treat Na-MMT. This paper explored THPC modified montmorillonite under different pH conditions. The morphology,structure,and performance characterization of modified montmorillonite was analyzed by fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD),thermogravimetric analysis(TGA), and scanning electron microscopy(SEM) as well as energy dispersive X-ray spectroscopy(EDX). Results showed THPC was more stable and more conducive to be intercalated under acid conditions. After intercalation,the interlayer spacing and thermal stability of this OMMT was increased.

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What this paper is about

Quaternary phosphonium salt,tetrakis-(hydroxymethyl) phosphonium chloride,was used as intercalating agent to treat Na-MMT. This paper explored THPC modified montmorillonite under different pH conditions. The morphology,structure,and performance characterization of modified montmorillonite was analyzed by fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD),thermogravimetric analysis(TGA), and scanning electron microscopy(SEM) as well as energy dispersive X-ray spectroscopy(EDX). Results showed THPC was more stable and more conducive to be intercalated under acid conditions. After intercalation,the interlayer spacing and thermal stability of this OMMT was increased.

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Available abstract

Quaternary phosphonium salt,tetrakis-(hydroxymethyl) phosphonium chloride,was used as intercalating agent to treat Na-MMT. This paper explored THPC modified montmorillonite under different pH conditions. The morphology,structure,and performance characterization of modified montmorillonite was analyzed by fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD),thermogravimetric analysis(TGA), and scanning electron microscopy(SEM) as well as energy dispersive X-ray spectroscopy(EDX). Results showed THPC was more stable and more conducive to be intercalated under acid conditions. After intercalation,the interlayer spacing and thermal stability of this OMMT was increased.

Key concepts: Montmorillonite, Thermogravimetric analysis, Intercalation (chemistry), Materials science, Thermal stability, Fourier transform infrared spectroscopy, Scanning electron microscope, Phosphonium

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