Crystallization Kinetics and Properties of Na, K-Phillipsites

Crystallization kinetics are reported for synthetic sodium, potassium phillipsites, Pure phillipsite was synthesized in the temperature range of 25-175°C under autogenous pressure and with K/(Na+K) ratios in the starting batch composition of 0.05 to 0.35. Reaction rate expressions developed for nucleation and crystallization were determined to be second order in hydroxide concentration. The kinetic diameter of the synthesized phillipsites was determined to be 2.60 to 2.65Å.