Zeolite molecular sieve basic traits of fold

And structure characteristics of molecular sieves 4a has a crystal surface as the solid skeleton, the internal cavity can have the effect of adsorbed molecules. Cavity between a channel are connected, molecules by the channel. As a result of the cavity clean properties, molecular sieve pore size distribution is very uniform. zeolite adsorbent according to the crystal to selective adsorption of molecules, the size of the internal cavity is adsorbed molecules of a given size and reject material larger molecules.

Zeolite molecular sieve according to its hole or channel system can be divided into the hole, the hole (mesoporous) and double Kong Feishi three categories.

Can be used for the pressure swing adsorption of oxygen enriched air separation.

The basic definition of zeolite molecular sieves

3a molecular sieves is crystallization of aluminum silicate metal salt hydrate, its chemical general formula is: Mx/m [(AlO2), x (SiO2), y] zH2O. M on behalf of the cation, M said its valence number, z said water hydration, x and y are integer. molecular sieve siliporite is activated, the water molecules are removed, the rest of the atoms form cage structure, aperture is 3 ~ 10 & Aring; . Crystals have many size of zeolites hole, hole there are many between the diameter of the hole (also called "window"). Because of the molecular sieve can be smaller than the aperture molecular adsorption into the hole, and to exclude is larger than the aperture of the molecules in the hole, have the effect of molecular sieving, so named molecular sieve. Zeolite molecular sieve can exist in the nature, artificial synthesis from the 1970 s.

Zeolite molecular sieves

natural gas separation is crystallization of aluminum silicate metal salt hydrate, its chemical general formula is: Mx/m [(AlO2), x (SiO2), y] zH2O. M on behalf of the cation, M said its valence number, z said water hydration, x and y are integer. molecular sieve 13x is activated, the water molecules are removed, the rest of the atoms form cage structure, aperture is 3 ~ 10 & Aring; . Crystals have many size of zeolites hole, hole there are many between the diameter of the hole (also called "window"). Because of the molecular sieve can be smaller than the aperture molecular adsorption into the hole, and to exclude is larger than the aperture of the molecules in the hole, have the effect of molecular sieving, so named molecular sieve.