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博文

目前显示的是标签为“Smectite”的博文

The Elemental, Mineralogical, IR, DTA and XRD Analyses Characterized Clays and Clay Minerals of Central and Eastern Uganda

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=54185#.VPAqxSzQrzE Author(s) I. Z. Mukasa-Tebandeke 1* , P. J. M. Ssebuwufu 1 , S. A. Nyanzi 1 , A. Schumann 2 , G. W. A. Nyakairu 1 , M. Ntale 1 , F. Lugolobi 3 Affiliation(s) 1 Department of Chemistry, Makerere University, Kampala, Uganda . 2 Department of Geology, Makerere University, Kampala, Uganda . 3 Department of Earth Sciences, Wesleyan University, Middletown, CT, USA . ABSTRACT The results on the elemental and mineralogical compositions of clays from Central Uganda differed from those from the volcanic sediments of the Mt. Elgon in Eastern Uganda. Utilisation of the two types of clays should be strict after understan...

Distinguishing Kaolinites and Smectite Clays from Central and Eastern Uganda Using Acidity, pH, Colour and Composition

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53207#.VLcnXsnQrzE Author(s)   I. Z. Mukasa-Tebandeke 1* , P. J. M. Ssebuwufu 1 , S. A. Nyanzi 1 , A. Schumann 2 , M. Ntale 1 , G. W. Nyakairu 1 , F. Lugolobi 3   Affiliation(s) 1 Department of Chemistry, Makerere University, Kampala, Uganda . 2 Department of Geology, Makerere University, Kampala, Uganda . 3 Department of Earth Sciences, Wesleyan University, Middletown, USA . ABSTRACT The Langmuir isotherms of 1-aminobutane in isohexane slurries showed increase in clay acidity with increase in concentration of mineral acid used to leach the clay as well as the temperature at which the clay was thermally activated prior to experimentation involving adsorption of 1-aminobutane. The values of acidity for Central Uganda were low ranging from 0.07 mol/g to 0.32 mol/g yet those for clays from Eastern Uganda were high ranging from 0.1 mol/g to 1.85 mol/g. Based...