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Effect of Acid Treatment on Volumetric Swelling Ratios of Coals
Effect Acid Treatment Volumetric Swelling Ratios of Coals
2010/4/22
To remove Ca2+ ions, six low rank coals and one coking coal were treated with 0.1 and l.0 N HC1 for 24 h. IR spectra and proximate analysis of the lignites indicated that only slight structural change...
Structural and Textural Modifications of Palygorskite and Sepiolite under Acid Treatment
Acid Attack Activation of Clays Fibrous Silica Palygorskite Sepiolite
2011/12/8
Abstract: Sepiolite from Mara (Zaragoza, Spain) and palygorskite from Attapulgus (Georgia, USA) were activated by treatment at different concentrations with solutions of boiling HCl under reflux condi...