Thermo-Analytical And Sem Methods Of Studing High
Silica Zeolites
Science Park Research Journal, (November 2013)Abstract
Thermal treatment is the main force for crystallization and phase
transformation, the behavior of precursors on heating revels a lot of information about the possible phenomena of involving stability, sensitivity and some predictive ability of zeolites. Thermo-gravimetric (T.G.) in combination with differential thermal analysis (D.T.A.) changes in precursor samples including the structure collapse and phase transformation at high
temperatures were checked by recording T.G./DTA plots of Highi silica H-US Y zeolites using SETERAM T.G.DTA-92 instrument in air atmosphere 030ml//min. at a heating rate of 5 c //min. the range of temperature studied 0 using this instrument is from room temperature (RT) to 1000 c . The selective samples are post Synthesized and are obtained from low silica Na-Y zeolite
converted in to high silica USY zeolites, are studied in the present paper. The post synthetic modification of the original samples affects the pore dimension, crystalinity, void volume, frame work structure, catalytic activity, selectivity,
stability etc of the original sample