ZSM-5 molecular sieve (Zeolite Socony Mobil–5 or ZSM-5 zeolite powder), is a highly siliceous aluminosilicate zeolite with a crystal structure of MFI. ZSM-5 has a medium pore size (0.54 nm × 0:56 nm) and has two intersecting three-dimensional channels with one straight parallel channel and the other running parallel defined by sinusoidal 10-membered ring openings.
ZSM-5 is an advanced molecular sieve that boasts unique and exceptional properties that are employed in a variety of processes and applications across a broad range of industries.
Thermostability: The ZSM-5 skeleton is ten-membered rings, and the basic unit is composed of eight five-membered rings, those five-membered rings has solid and stable structure. Therefore, ZSM-5 can withstand high temperatures of 1100°C and is one of the highest thermostability zeolites.
Tydrophobicity: ZSM-5 has a high silicon to aluminum ratio, its surface charge density is small. And water molecule is a highly polar molecule, so it is not easily adsorbed by ZSM-5, ZSM-5 is hydrophobic.
Acid Resistance: ZSM-5 is resistant to various acids except hydrofluoric acid.
| Type | ZSM-5 |
| Shape | Powder |
| Crystal Structure | MFI |
| Crystal Size(μm) | 0.2~10 |
| BET Surface Area(㎡/g) | >300 |
| SiO2/Al2O3(mol/mol) | 10~∞ |
| Na2O(wt%) | <0.1 |
| Crystallinity(%) | >90 |
| Loss on ignition(wt%) | <11 |
ZSM-5 molecular sieve is an excellent adsorbent and shape-selective catalyst, is widely used in petrochemicals, fine chemicals.
