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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:


Key words:

H beta molecular sieve protection catalyst
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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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