Synthesis process of zeolite P using a poorly crystallized kaolinite

Abstract Poorly crystallized kaolinite KGa2 and metakaolinites derived from them were studied under hydrothermal conditions in an aqueous sodium hydroxide solution. Reaction was obtained in a specific reactor allowing a continuous agitation and pH and temperature controls. Metakaolinte were derived from heated kaolinite at 500 ∘ C and 900 ∘ C . Using kaolinite and metakaolinite obtained after heating at 500 ∘ C the main formed products w metakaolinte obtained at 900 ∘ C reacted with NaOH solution zeolite A (LTA) is the first synthesized product and a prolonged treatment (72 hours) leads to synthesize zeolite P. Intermediate and homogeneous phases were characterized by XRD analysis and MAS NMR spectroscopy.