Interlamellar Adsorption of Carbon Dioxide by Smectites

  title={Interlamellar Adsorption of Carbon Dioxide by Smectites},
  author={Jos{\'e} Jean Fripiat and M. I. Cruz and Bruce Forbes Bohor and Josephus Jr. Thomas},
  journal={Clays and Clay Minerals},
The adsorption of CO2 at low temperature (~ -70°C) on thin films of homoionic smectites was studied by X-ray diffraction and by i.r. absorption. An increase in the d001 spacings of these clay films upon adsorption of CO2 was observed. In addition, a dichroic effect was readily discernible by comparing the i.r. spectra at two different orientations of the smectite films; i.e. with the film normal and tilted 35° with respect to the i.r. beam. The CO2 stretching vibration at 2350 cm-1 was used for… 

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