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Layer charge estimation of smectites using infrared spectroscopy

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Abstract:

A new method of measuring the layer charge of smectites by IR spectroscopy is proposed based on the integrated intensity measurement of the band assigned to the ammonium fundamental 4 mode of NH+4-exchanged clays. Measurements are made before and after Li fixation (Hofman & Klemen effect). These allow the quantitative determination of the total charge, equivalent to CEC, and tetrahedral and octahedral charge distribution in both dioctahedral and trioctahedral smectites.

Document Type: Research Article

DOI: http://dx.doi.org/10.1180/000985598545903

Affiliations: 1: Université de Poitiers, CNRS UMR 6532 'HydrASA', 40, avenue duRecteur Pineau, F-86022Poitiers Cedex, France, 2: Institute of Inorganic Chemistry, Slovak Academy of Sciences, 842 36 Bratislava, Slovakia 3: Universite´ de Poitiers, CNRS UMR 6532 'HydrASA', 40, avenue duRecteur Pineau, F-86022Poitiers Cedex, France,

Publication date: December 1, 1998

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minsoc/cm/1998/00000033/00000004/art00005
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