Zeolite ZSM Series
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ZSM-35
ZSM-35 molecular sieve has good hydrothermal stability, thermal stability, pore structure and suitable acidity, and can be used for selective cracking/isomerization of alkanes.
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ZSM-48
ZSM-48 molecular sieve has good hydrothermal stability, thermal stability, pore structure and suitable acidity, and can be used for selective cracking/isomerization of alkanes.
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Zsm-23
Chemical composition: |na+n (H2O) 4 | [alnsi24-n o48]-mtt, n < 2
ZSM-23 molecular sieve has a MTT topological framework, whichcontains five membered rings, six membered rings and ten membered rings at the same time. The one-dimensional pores composed of ten membered rings are parallel pores that are not crosslinked with each other. The orifice of ten membered rings is three-dimensional wavy, and the cross section is teardrop shaped.
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ZSM-22
Chemical composition: |na+n (H2O) 4 | [alnsi24-no48]-ton, n < 2
The ZSM-22 skeleton has a ton topological structure, which includes five membered rings, six membered rings and ten memberedrings at the same time. The one-dimensional pores composed of tenmembered rings are parallel pores that are not crosslinked with each other, and the orifice is elliptical.
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ZSM-5 Series Shape-selective Zeolites
ZSM-5 zeolite could be used for petrochemical industry, fine chemical industry and other fields because of its special three-dimensional cross straight pore canal, special shape-selective crackability, isomerization and aromatization ability. Presently, they can be applied to the FCC catalyst or additives that can improve the gasoline octane number, hydro/aonhydro dewaxing catalysts and the unit process xylene isomerization, toluene disproportionation and alkylation. The gasoline octane number can be enhanced and the olefin content can be also increased if the zeolites are added to the FCC catalyst in the FBR-FCC reaction. In our company, the ZSM-5 serial shape-selective zeolites have different silica-alumina ratio, from 25 to 500. The particle distribution can be adjusted according to the clients’ requirements. The isomerization ability and activity stability can be changed when the acidity is adjusted by changing the silica-alumina ratio according to your requirements.
