MECHANOCHEMISTRY OF ZEOLITES .2. CHANGE IN PARTICULATE PROPERTIES OF ZEOLITES DURING BALL-MILLING

Change of particulate and morphological properties of the samples obta ined during the high-energy ball milling of zeolites A and X were stud ied by scanning-electron microscopy, X-ray diffraction, and determinat ion of particle size distribution. It was found that decrease of cryst allinity is followed by considerable change of particulate properties during the milling, but that the change of particulate properties and amorphization are two independent processes. Type of amorphization ind uced by ball milling was defined on the basis of the analysis of the c hange of effective crystallite size during the milling.