molecular sieves

In 1932, McBain put forward the concept of "molecular sieve" of. Said porous material can be sieved material at the molecular level.molecular sieves msds Although only a zeolite molecular sieve, zeolite, but the most representative, so "zeolite" and "4a molecular sieves" These two words are often mixed.

Analcime

SEM micro-morphological characteristics of a quadrangular three octahedral shape, and various forms of polyethylene, mostly 4,6 polygonal plane, grains can be as large tens mm, EDX spectrum characteristic element of Si, Al, Na, there can be small Ca.

Zeolite general formula

Zeolite general formula: AmBpO2p · nH2O, the formula A (x / q) [(AlO2) x (SiO2) y] n (H2O) where: A is Ca, Na, K, Ba, Sr cationic,

B is Al and Si, p is the valence of the cation, m is the number of cations, n is the number of molecules of water, x is the number of Al atoms, y is the number of Si atoms, (y / x) is generally between 1 ~ 5, (x + y) is the number of tetrahedral unit cell.