Molecular Sieve Crystallization Temperature And Time?
For synthetic zeolite molecular sieve, temperature is a very important factor. Temperature changes affect the pressure of water in the reactor, the polymerization state and polymerization of aluminosilicate, the formation and dissolution of gels, the nucleation and growth of zeolites and the metastable phases between metastable phases. The same system may get completely different phase at different temperatures. The higher the temperature is, the smaller the size and pore volume of the zeolite are and the more the density of the crystal framework increases. In general below 150 ° C, the primary structure tends to be a four-membered ring or a six-membered ring, whereas for temperatures above 150 ° C it is often the primary structural element of a five-membered ring. Chemxin has good technical research on molecular sieve crystallization.
