ZSM-5 Zeolite （SiO2/Al2O3 : 25）
ZSM-5 type zeolite, belonging to high-silica zeolite and having a Si/Al ratio of up to 1000 and above, also shows the hydrophobic characteristic. The structural feature of such a zeolite is that the vertical and horizontal parts are crystalline alumninosilicate composed of 10-membered channel. The basic structure is composed of eight 5-memberedings, which has channels only and is without cage-free cavities. ZSM-5 has two sets of cross channels, one of which is straight, and the other one is shown in zig-zag type and vertical to each other. The channel is shown in the form of anellipse, and the window diameter thereof is 0.55 to 0.60nm. As the reaction space is similar to the shape of the access, the zeolite has a shape selection effect to the reactants and products. Moreover, ZSM-5 is a good raw material of selective catalyst due to the harmonious structure and hvarothermal stability.
ZSM-5 molecular sieve catalyst is widely used in petrochemical processing industry. It can be used as an auxiliary agent in the fluid catalytic cracking process, which can increase propylene and liquefied gas, and improve the octane number of gasoline: in addition, it can be used for the production of ethylbenzene, p-xylene, phenol, pyridine, etc.
We can customize zeolite products with any specifications of Si/Al ratio.
