Zeolite Which is good, there is a new molecular sieve (certified), there is a new zeolite molecular sieves by Shanghai Limited. Shanghai new molecular sieve Limited (www.molsionms.com) is specialized in the "sieve" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. Pan. In the manufacture of carbon molecular sieve, based on the size of the molecular size, carbon molecular sieves inside the pore distribution should be 0.28 ~ 0.38nm. Within this pore size range, the oxygen can quickly diffuse into the hole through the porous openings, and the nitrogen is difficult orifice through microporous molecular sieves, so as to achieve an oxygen, nitrogen separation. Microporous carbon molecular sieve pore size is the separation of oxygen, nitrogen base, if the pore size is too large, oxygen, nitrogen, into the pores of the molecular sieve is easy, but there is no separation of the role; pore size is too small, oxygen, nitrogen can not enter micropores, but there is no separation. [1] Because of the effective pore size of 4A Zeolite molecular sieve 0.4nm 5a manufacturers, it is known as zeolite molecular sieves 4A distribution, its network structure composed of silicon-oxygen tetrahedron unit [SiO4] and aluminum-oxygen tetrahedron [AlO4] units are staggered from . Nature of the ion exchange performance ---- edit function to soften water features: 4A molecular sieve framework are each oxygen atom is shared by two adjacent tetrahedral molecular sieve denitrification, this structure which may be occupied by cations and water molecules Large bugholes, and these cations and water molecules have a greater mobility, cation exchange and reversible dehydration.