... of fast adsorption, more regeneration times, higher crushing 5A molecular sieve is the kind of molecular sieve with ... pore size of 5A, Mainly used in the oxygen industry, adsorption of ... so on, does not adsorb any molecular larger than 5A, according to the industrial application, Bete made molecular sieve ... formula: 0.4K 2 O · 0.6Na 2 O · Al 2 O 3 · 2.0SiO 2 · 4.5H 2 ...