Title of article :
Alkylation of phenol with tert-butyl alcohol catalyzed by large pore zeolites Original Research Article
Author/Authors :
Kui Zhang، نويسنده , , Huaibin Zhang، نويسنده , , Genhui Xu، نويسنده , , Shouhe Xiang، نويسنده , , Dong Xu، نويسنده , , Shangyuan Liu، نويسنده , , Hexuan Li، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Pages :
8
From page :
183
To page :
190
Abstract :
The tert-butylation of phenol was investigated over various zeolite catalysts using tert-butyl alcohol as alkylating agent in a down-flow tubular reactor at atmospheric pressure. Zeolite HY was beneficial to the reaction. The important variables affecting the activity and selectivity of zeolite HY, such as reaction temperature, space velocity and molar ratios of tert-butyl alcohol to phenol, were studied. Zeolite HY hydrothermally treated at high temperatures (above 873 K) was unfavorable to the reaction. The activity and selectivity of zeolite HY were not sensitive to its crystallite diameter change. In the alkylation of phenol with tert-butyl alcohol over zeolite HY catalyst, the suitable reaction temperature range was from 398 to 438 K. Lower reactant molar ratios were beneficial to p-TBP and o-TBP, while higher ones were helpful to produce 2,4-DTBP. Lower space velocities (WHSV (h−1)), i.e. <1.66 (based on phenol) were beneficial to the reaction. The present study shows that zeolite HY has a potential application in the production of tert-butyl phenols with high activity and 2,4-DTBP selectivity.
Keywords :
Zeolite HY , o-TBP , p-TBP , 2 , 4-DTBP , Phenol , Alkylation
Journal title :
Applied Catalysis A:General
Serial Year :
2001
Journal title :
Applied Catalysis A:General
Record number :
1150436
Link To Document :
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