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Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations

Kaolin was used as a silica and alumina precursor in the hydrothermal synthesis of kalsilite with the addition of potassium carbonate (K₂CO₃) as a potassium source. The effects of different K₂CO₃ concentrations have been studied. After a 24-hour hydrothermal reaction at 200°C, kaolin treated with 1....

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Main Authors: Eddy Mohd Farid Mohd Yusslee, Nur Hazwani Dahon, Mohd Azrul Abdul Rajak, Sazmal Effendi Arshad
Format: Proceedings
Language:English
English
Published: Pusat e-pembelajaran, UMS 2021
Subjects:
Q1-390 Science (General)
TN1-997 Mining engineering. Metallurgy
Online Access:https://eprints.ums.edu.my/id/eprint/41631/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/41631/2/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/41631/
https://oer.ums.edu.my/handle/oer_source_files/1874
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spelling my.ums.eprints.416312024-10-25T01:37:41Z https://eprints.ums.edu.my/id/eprint/41631/ Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations Eddy Mohd Farid Mohd Yusslee Nur Hazwani Dahon Mohd Azrul Abdul Rajak Sazmal Effendi Arshad Q1-390 Science (General) TN1-997 Mining engineering. Metallurgy Kaolin was used as a silica and alumina precursor in the hydrothermal synthesis of kalsilite with the addition of potassium carbonate (K₂CO₃) as a potassium source. The effects of different K₂CO₃ concentrations have been studied. After a 24-hour hydrothermal reaction at 200°C, kaolin treated with 1.25M K₂CO₃ shows 28.7°, 34.2°, and 42.3° as the most significant peaks under X-ray diffraction (XRD) which corresponds to hexagonal kalsilite. In addition, Field emission scanning electron microscopy (FESEM) images also revealed hexagonal particles proving the formation of the desired kalsilite. At K₂CO₃ concentrations less than 1.0M, boehmite and bayerite were identified to be the primary products while kalsilite forms as a minor crystalline phase. Hexagonal kalsilite was observed as the major product at higher (>1.0M) K₂CO₃ concentration while the reaction kept constant at 200°C. Pusat e-pembelajaran, UMS 2021 Proceedings PeerReviewed text en https://eprints.ums.edu.my/id/eprint/41631/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/41631/2/FULL%20TEXT.pdf Eddy Mohd Farid Mohd Yusslee and Nur Hazwani Dahon and Mohd Azrul Abdul Rajak and Sazmal Effendi Arshad (2021) Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations. https://oer.ums.edu.my/handle/oer_source_files/1874
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic Q1-390 Science (General)
TN1-997 Mining engineering. Metallurgy
spellingShingle Q1-390 Science (General)
TN1-997 Mining engineering. Metallurgy
Eddy Mohd Farid Mohd Yusslee
Nur Hazwani Dahon
Mohd Azrul Abdul Rajak
Sazmal Effendi Arshad
Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations
description Kaolin was used as a silica and alumina precursor in the hydrothermal synthesis of kalsilite with the addition of potassium carbonate (K₂CO₃) as a potassium source. The effects of different K₂CO₃ concentrations have been studied. After a 24-hour hydrothermal reaction at 200°C, kaolin treated with 1.25M K₂CO₃ shows 28.7°, 34.2°, and 42.3° as the most significant peaks under X-ray diffraction (XRD) which corresponds to hexagonal kalsilite. In addition, Field emission scanning electron microscopy (FESEM) images also revealed hexagonal particles proving the formation of the desired kalsilite. At K₂CO₃ concentrations less than 1.0M, boehmite and bayerite were identified to be the primary products while kalsilite forms as a minor crystalline phase. Hexagonal kalsilite was observed as the major product at higher (>1.0M) K₂CO₃ concentration while the reaction kept constant at 200°C.
format Proceedings
author Eddy Mohd Farid Mohd Yusslee
Nur Hazwani Dahon
Mohd Azrul Abdul Rajak
Sazmal Effendi Arshad
author_facet Eddy Mohd Farid Mohd Yusslee
Nur Hazwani Dahon
Mohd Azrul Abdul Rajak
Sazmal Effendi Arshad
author_sort Eddy Mohd Farid Mohd Yusslee
title Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations
title_short Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations
title_full Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations
title_fullStr Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations
title_full_unstemmed Hydrothermal conversion of kaolin to kalsilite (kalSiO₄): the effect of K₂CO₃ concentrations
title_sort hydrothermal conversion of kaolin to kalsilite (kalsio₄): the effect of k₂co₃ concentrations
publisher Pusat e-pembelajaran, UMS
publishDate 2021
url https://eprints.ums.edu.my/id/eprint/41631/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/41631/2/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/41631/
https://oer.ums.edu.my/handle/oer_source_files/1874
_version_ 1814049482424188928
score 13.211869

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