The kinetics of the formation of sodium aluminosilicate hydrate in strong caustic solutions

The kinetics of the formation of sodium aluminosilicate hydrate in strong c austic solutions at high mole ratio(between Na2O and Al2O3) were studied, I t was one order for Al(OH)(4)(-) and SiO2(OH)(2)(2-) ion respectively. The value of apparent active energy was 86.42 kJ/mol. Based on the analysis of the structure of the aluminate solution and the mechanism of the-formation of zeolite, the mechanism of five-ligand intermediate state was set up. It was advantageous for the formation of sodium aluminosilicate hydrate to inc rease the temperature, or to decrease the caustic concentration, or to inte nsify the agitation, or to add the seed (or impurities) in the alumina prod uction.