Acid Dissolution of a Texas Bentonite

W. T. Granquist and G. Gardner Sumner
Mellon Institute, Pittsburgh, Pennsylvania

Abstract: Various physical properties of an acid-treated Texas bentonite were studied as a function of treatment time. The observed kinetics were pseudo first-order (large excess of acid) and on this basis and the x-ray results a model and mechanism are proposed that are consistent with observed surface area, exchange capacity, and surface acidity changes. A crude estimation of activation energy gave a value lower than that of Osthaus (1956) but of the right magnitude.

Clays and Clay Minerals; 1957 v. 6; no. 1; p. 292-308; DOI: 10.1346/CCMN.1957.0060122
© 1957, The Clay Minerals Society
Clay Minerals Society (www.clays.org)