Hydrothermal transformation of metakaolinite under basic solution

Eddy F. Yusslee and Nur Hazwani Dahon and Mohd Azrul Abd Rajak and Sazmal E. Arshad (2022) Hydrothermal transformation of metakaolinite under basic solution.

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Abstract

An amorphous metakaolinite was treated hydrothermally with 1.25M KOH solution at 190 °C during different reaction times ranging from 0 to 48 h. The products obtained were characterised by X-ray diffraction in order to determine their mineralogical characteristics. Two distinct mechanisms can explain the change of the precursor material in KOH solutions: (1) precipitation and (2) dissolution. At the initial stage, only gibbsite and quartz can be identified from the major peaks of the diffractograms, while after 12 hours, zeolite F and kalsilite have been formed before the formation of leucite after 48 hours.

Item Type:	Proceedings
Keyword:	Kaolinite, Crystals, Diffraction
Subjects:	Q Science > QE Geology > QE1-996.5 Geology > QE351-399.2 Mineralogy T Technology > TN Mining engineering. Metallurgy > TN1-997 Mining engineering. Metallurgy > TN799.5-948 Nonmetallic minerals
Department:	CENTRE > Preparation Centre for Science and Technology
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	10 Oct 2024 16:07
Last Modified:	10 Oct 2024 16:07
URI:	https://eprints.ums.edu.my/id/eprint/41259

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