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Introduction
Zeolite H-ZSM-5 catalyst is the proton-type (H-type) molecular sieve of ZSM-5, it also has an MFI structure. The AlO4- units in the H-ZSM-5 framework are balanced by H+ charges, thereby forming Brønsted acid centers (Si-OH-Al) within the lattice, which is the source of its catalytic activity. Almost all acid-catalyzed reactions depend on H-ZSM-5 zeolite.
H-ZSM-5 has a mesoporous MFI structure, thus exhibiting extremely high shape selectivity; its interconnected three-dimensional channels enable more balanced diffusion of the reactants. The acid source of H-ZSM-5 is mainly Brønsted acid, which has high catalytic efficiency; and the second is Lewis acid, which promotes auxiliary reactions.
ZSM-5 has excellent hydrothermal stability and strong resistance to carbon buildup, which are highly valued in industrial practices.
Technical Specification
|
Crystal Type |
H-ZSM-5 |
|
Apprearance |
White powder |
|
Crystal Structure |
MFI |
|
Crystal Size(μm) |
2~6 |
|
BET Surface Area(m2/g) |
>380 |
|
SiO2/Al2O3(mol/mol) |
20~∞ |
|
Crystallinity(%) |
>95 |
Application
- Petrochemical FCC
- Methanol Conversion Technologies
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