Preparation of molecular sieve xh-5

Until the 1930 s, fermentation is the only industrial molecular sieve xh-5 production methods. With the rapid development of petrochemical industry, synthesis of ethanol production is more and more big. But in the synthesis of ethanol mixed heterogeneous high carbon molecular sieve xh-9, to the person's senior neural paralysis, not suitable for used as a beverage, food, medicine, spices, and so on. Therefore, even in the petroleum chemical industry developed countries, fermentation of ethanol still occupies certain proportion.

The performance of the molecular sieve dryer

molecular sieve dryer as the powder crystal, with metallic luster, hardness is 3 ~ 5, the relative density of 2 ~ 2.8, the natural zeolite has a color, synthetic zeolite is white, insoluble in water, thermal stability and acid resistance increased with the increase of SiO2 / Al2O3 ratio increased. molecular sieve xh-5 has a large specific surface area, 300 ~ 300 m2 / g, the highly polarized crystal surface, as a kind of efficient adsorbent, is also a kind of solid acid, surface has high concentration of acid and acid strength, can cause is catalytic reaction of carbon ionic. When the composition of the metal ion and other ions in the solution during the exchange, adjustable aperture, change its adsorption properties and catalytic properties, which made the performance of different molecular sieve catalyst.