Literature work indicates that, exact mole ratio of water for a particular zeolite. What is the need to give exact mole ratio , even it is forming in a range of water content or mole ratio? For example synthesis of zeolite Na-P1 with Al2O3 : 840 H2O mole ratio.
Dear Murukutti Mahima Kumar
Water plays an important role in structure direction encountered in zeolite synthesis. Water molecule act as void filler in order to stabilize porous oxide frameworks.
Yes, Water plays an important role as channel filler in zeolite, but why only particular(exact) mole ratio is giving in literature, even though zeolites are forming over a range of quantity of water.
For example I am using 20 ml of water in the reaction. I am doing the same reaction again by taking 30 ml water. But no change in quality and quantity of product was observed, even though for the both reactions have different alumina or silica to water ratio which is contradiction to particular reported mole ratio.That to reported and experimental water quantities are different.
As Mihir Belani said, Water is void filler( in natural zeolite), this viods are occupied by alkali metal atoms in synthetic zeolites. So, what is the role of particular mole ratio of H2O in zeolite formation in synthetic zeolites, where H2O is not prominent(due to probability of some pores only can occupy by H2O, remaining/major by metal atoms ) cavity filler.
Can any one help?