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The kinetics and mechanisms of using cationic surfactants to reduce the dissolution of clay minerals

Published online by Cambridge University Press:  07 April 2025

Jie Li
Affiliation:
NO.1 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources, Jinan, China
YuEn Guo
Affiliation:
Chengdu University of Technology, College of Materials and Chemistry & Chemical Engineering, Chengdu, China
Zhixiang Niu*
Affiliation:
NO.1 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources, Jinan, China
Na Li
Affiliation:
Chengdu University of Technology, College of Energy, Chengdu, China
Yanling Cao
Affiliation:
NO.1 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources, Jinan, China
Haishun Yin
Affiliation:
NO.1 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources, Jinan, China
Lijie Jin
Affiliation:
Jinan Petrochemical Design Institute, Jinan, China
Guoming Sun
Affiliation:
NO.1 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources, Jinan, China
Li Guo
Affiliation:
NO.1 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources, Jinan, China
Chongying Li
Affiliation:
Chengdu University of Technology, College of Materials and Chemistry & Chemical Engineering, Chengdu, China
*
Corresponding Author: Zhixiang Niu; Email: guoy33448@gmail.com

Abstract

The dissolution kinetics occurring on clay minerals are influenced by various factors, including pH, temperature and mineral lattice structure. However, the influence of the surfactant is rarely studied. In the present work, cationic surfactants were investigated in terms of the dissolution of clay minerals in acidic environments. Kaolinite was selected as the representative clay mineral. The cationic surfactant inhibited the dissolution of clay minerals because it limited the attack of H+ on the kaolinite surface and then inhibited the dissolution of kaolinite by modifying the hydrophilicity of the kaolinite surface towards hydrophobicity. The inhibition ability of the surfactant might be related to its molecular structure and the type of acid used in dissolution experiments.

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Article
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of The Mineralogical Society of the United Kingdom and Ireland.

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