Zeolite as a powder-like crystals, with a metallic sheen, and hardness of 3 to 5, the relative density of 2 to 2.8 Color, synthetic zeolite as a white, water-insoluble, natural zeolite, the thermal stability and acid resistance with SiO2/Al2O3 composition ratiothe increases.
Zeolite has a large specific surface area of 300 to 1000m2 / g, within the crystal surface a high degree of polarization, as a class of efficient adsorbent, is also a type of the solid acid, the surface has a high acid concentration and the acid strength, which can cause the positive carbonionic catalytic reaction.
Other ions exchanged when the composition of the metal ion in solution, the adjustable aperture, changes their adsorption properties and the catalytic properties, to thereby obtain the different properties of the molecular sieve catalyst.
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