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H beta molecular sieve protection catalyst
Summary:
Hβ molecular sieve, as a solid acid catalyst with three-dimensional twelve-membered ring pore structure, has good acidity and thermal stability, and is widely used in alkylation reactions. In addition, the catalyst can effectively remove alkalinity from raw materials.
Classification:
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Detailed description
Overview
Hβ molecular sieve, as a solid acid catalyst with three-dimensional twelve-membered ring pore structure, has good acidity and thermal stability, and is widely used in alkylation reactions. In addition, the catalyst can effectively remove basic nitrogen from raw materials.
The Hβ molecular sieve produced by our company uses ammonium acetate to modify the β molecular sieve, which can obtain suitable acid density and acid strength, and larger specific surface area. The molecular sieve is mainly used in the alkylation reaction of benzene and ethylene, and the basic nitrogen in the raw material benzene is removed by the acidity of the Hβ molecular sieve.
physicochemical parameters
Table 1. Random sample BET
| Sample label | 1# | 2# | 3# | 4# |
| BET/m2.g-1 | 514.081 | 515.010 | 511.099 | 517.857 |
Table 2. Random sample Na2O content
| Sample label | 1# | 2# | Remarks |
| Na2O content/% | 0.0234 | 0.0280 | Catalyst standard <0.1 |
Table 3. Physical parameters
| Appearance | Diameter/mm | Mechanical strength/N/cm | Bulk density/Kg/m3 | Length/mm |
| white stick | 1.7~1.8 | 65~70 | ≈ 0.5 | 3~8 |
Table 4. Surface acidity of catalyst
| Sample | NH3-TPD acid content/(mmol.g-1) | NH3-TPD peak temperature/℃ | |
| weak acid | strong acid | ||
| RH | 1.239 | 215 | 333 |
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