A STUDY ON ACIDITY AND CATALYTIC PROPERTY OF [B] ZSM-5 CATALYST MODIFIED WITH SILICON COMPOUND BY CHEMICAL SURFACE DEPOSITION OF LIQUID-PHASE TECHNIQUE |
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| Authors: | Yueling Dai Peng Yang Lianzang Chen Kejian Liao |
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| Affiliation: |
a Department of Applied Chemistry, Fushun Petroleum Institute, Fushun, Liaoning, P.R. China
b Department of Petroleum Chemistry, Dalian University of Science and Technology, Dalian, Liaoning, P.R. China |
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| Abstract: | The boron heteroatom zeolite catalyst has been modified with silicon compound by Chemical Surface Deposition of Liquid-phase (CLD) technique and the catalytic property of the modified catalyst is studied. Meanwhile, the acidity of the modified zeolite catalysts is characterized through TPD and IR technique, and the fluid adsorption method is used to determine its pore structure. The relationship between the catalytic property of the zeolite catalyst and its pore structure, its acidity has been found. The results of toluene-ethylene alkylation reaction indicate that the selectivity of p-ethyltoluene on the modified zeolite catalyst is higher than that on the zeolite catalyst before silanizated, reaching 94.14%. |
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| Keywords: | ZSM-5 catalyst Alkylation reaction Silanization Modification Heteroatom zeolite Catalytic property |
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