COMPOSITION, STRUCTURE AND TEXTURAL …- clay activation with sulfuric acid extruder ,bentonite in place Gerzovo, before and after the activation with sulfuric acid. These charac- teristics were investigated by analytical methods, X-ray diffraction (XRD) and the method(PDF) Sulphuric Acid Activation of a Calcium BentoniteThe objective of this work was to determine the changes of thermal and surface properties of a bentonite from Çankιrι after activation using different concentrations of H2SO4 solutions (0.5–4 M).