The Influence of Acid Treatment on the Nanostructure and Textural Properties of Bentonite Clays

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ID: 270922
2005
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Abstract
The nanostructure and textural properties of acid-activated bentonite clays from the Bogovina coalmine were investigated. The acid activation was performed with HCl in the concentration range 1.5-7.5 M. The atomic force microscopy followed by image analysis was used in order to establish the influence of the acid treatment on the size of bentonite particles. Nitrogen adsorption-desorption isotherms at -196 °C were used to estimate the specific surface area, pore volume and pore size distribution. The acid treatment reduces the size of bentonite particles and increases the specific surface area and pore volume of the investigated bentonites. These effects are improved by increasing the acid concentration up to 4.5 M HCl. Further increase in acid concentration does not result in development of new porous structure.
Reference Key
jovanović2005materialsthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Z. Vuković,A. Milutinović-Nikolić,J. Krstić,A. Abu-Rabi,T. Novaković,D. Jovanović;Z. Vuković;A. Milutinović-Nikolić;J. Krstić;A. Abu-Rabi;T. Novaković;D. Jovanović;
Journal materials science forum
Year 2005
DOI
10.4028/www.scientific.net/msf.494.339
URL
https://sciprofiles.com/publication/view/dcc521736cae0bf5a8a7bfaa77de061f
Keywords
nitrogen clays nanostructure bentonite hcl pore acid treatment textural

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