Physicochemical Characterization of Natural Diatomite from Lampang Province, Thailand as a Solid Catalyst

Abstract:

This paper presents the studies on physical and chemical properties of the natural diatomite originating from Mae Tha District, Lampang the northern of Thailand as solid catalyst. The diatomite was characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) and nitrogen adsorption-desorption isotherm. The effect of calcination temperature on chemical composition, cyrytalline phase and textural properties of diatomite was also investigated. The XRF results indicated that the diatomite was composed mostly of SiO₂, K₂O, CaO and MgO. The calcination temperature ranging from 300 to 900 °C had no effect on the crystalline phase of diatiomite. The high surface area and large pore size diameter of diatomite was observed when the calcination temperature was below 900 °C. All the physicochemical results show the existence of SiO₂, K₂O, CaO and MgO, the high surface area and pore size diameter, indicate that the diatomite could potentially be used to a solid catalyst for biodiesel production.

• Periodical: Key Engineering Materials (Volume 861)
• Pages: 371-377
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.861.371
• Online since: September 2020
• Authors: Wilasinee Kingkam, Sasikarn Nuchdang, Pipat Laowattanabandit, Dussadee Rattanaphra*
• Keywords: Biodiesel Product, Calcined Temperature, Catalyst, Diatomite

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