Graduate Thesis Or Dissertation
 

Water and methanol adsorption on a series of organic complexes of montmorillonite

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  • Water and methanol adsorption isotherms at 25° and 37° C. were determined on a series of organo-bentonite clays. The clays differed in the length of the carbon chain attached to the amine adsorbed in the cation exchange position. The amines used had carbon chains of 4, 6, 8, 10, 12, 14, 16, and 18 carbon atoms. Nitrogen isotherms at -195.8 were also determined. The apparatus used was a gravemetric adsorption balance using quartz springs with a sensitivity of about one millimeter extension per milligram of load. The isotherms were typical type II isotherms and gave good B. E. T. plots. Effective surface areas were calculated from the B.E. T. plots. Isosteric heats of adsorption were calculated using the Clausius-Claperon equation, with data from the isotherms at the two temperatures.
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