Catalytic Cracking Zeolite ZSM-5 Pellet With Si/Al Ratio Of 25, 38, 50, 80, 150, 300
In petrochemistry industry, zeolite zsm5 molecular sieve is widely used as addition of diesel hydrodewaxing catalyst and fixed bed catalytic cracking catalyst.
Zeolite ZSM-5 molecular sieve which SiO2/Al2O3 is from 38 to 40.Mostly has been used as an FCC additive for decreasing olefin content in gasoline.
The SiO2/Al2O3 of zeolite ZSM-5 used in residuum catalytic cracking is from 25 to 30.
In chemical industry, Zeolite ZSM-5 molecular sieve is widely used as selective catalyst, such as: 1,4-diethylbenzene catalyst, xylene isomeric catalyst. In environmental protection, organic matters have been extracted by Zeolite ZSM-5 which SiO2/Al2O3 is from 220 to 400.
Production index of zeolite zsm-5
1 Chemical composition
| SiO2/Al2O3 | Na2O(%) | Al2O3(%) | SiO2(%) |
| 25 | ≤0.1 | 5-5.5 | 80-85 |
| 38 | ≤0.1 | 3.8-3.9 | 85-86 |
| 50 | ≤0.1 | 2.-2.6 | 86-87 |
Relative crystallinity: Na-ZSM-5≥85% , H- ZSM-5≥95%
Dimension: 4.6Å
Hot stability: 1.81(measured by isooctane)
Hydro-thermal stability: zeolite ZSM-5 is still keeping the structure at 1200℃
Stability: zeolite ZSM-5 is able to keep the structure at 700℃ after water vapor modified
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