Development of Ammonium-Saponites from Gels with Variable Ammonium Concentration and Water Content at Low Temperatures

  title={Development of Ammonium-Saponites from Gels with Variable Ammonium Concentration and Water Content at Low Temperatures},
  author={J. Theo Kloprogge and Johan Breukelaar and J. Ben H. Jansen and John Wilhelm Geus},
  journal={Clays and Clay Minerals},
Ammonium-saponite is hydrothermally grown at temperatures below 300°C from a gel with an overall composition corresponding to (NH4)0.6Mg3Si34Al0.6O10(OH)2. The synthetic saponite and coexisting fluid have been characterized by means of X-ray powder diffraction, X-ray fluorescence, Induced Coupled Plasma-Atomic Emission Spectroscopy, thermogravimetric analysis, transmission electron microscopy, CEC determination using an ammonia selective electrode, and pH measurement. In the crystallization… Expand

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