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Introduction
MCM-22 zeolite catalyst is a representative MWW-type high-silica zeolite molecular sieve, featuring a unique dual-channel or cavity system and surface cups structure. MCM-22 is typically used as a high-performance acid catalyst, usually supplied as a white powder, but can also be further shaped into granules, strips, or other catalyst forms.
The unique dual-channel structure is the most crucial feature of MCM-22 molecular sieve. Its 10-membered ring channel is responsible for shape selection, while the outer semi-cage structure provides a more open reaction space. Therefore, MCM-22 molecular sieve possesses structural advantages such as micropore shape selection ability, high acid catalytic activity, and relatively good macromolecular accessibility.
One of the most important applications of MCM-22 zeolite catalyst is the alkylation of aromatic hydrocarbons. For example, in benzene alkylation, the unique pore structure and semi-cage structure of MCM-22 can improve the selectivity of cumene and reduce further alkylation and side reactions. Therefore, MCM-22 catalyst can be used in cumene production, ethylbenzene-related processes, aromatic alkylation, alkylbenzene synthesis, etc.
Technical Specification
|
Type |
MCM-22 |
|
Apprearance |
White powder |
|
Crystal Structure |
MWW |
|
BET Surface Area(m2/g) |
≥400 |
|
SiO2/Al2O3(mol/mol) |
Customizable |
|
Particle Size(μm) |
0.5~10 |
|
Crystallinity(%) |
≥95 |
|
Na2O(wt%) |
<0.1 |
|
Loss on Ignition(wt%) |
<5 |
Application
- Aromatic Hydrocarbons Alkylation
- Aromatic Hydrocarbons Isomerization
- Toluene Disproportionation
- Transalkylation Of Polyalkylbenzene
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