Please use this identifier to cite or link to this item:
Title: t-Butylation of p-cresol with t-butyl alcohol over mesoporous Al-MCM-41 molecular sieves
Authors: Selvaraj, M.
Kawi, S. 
Keywords: Al-MCM-41
Brønsted acidity
Catalytic activity
Conversion of p-cresol
Selectivity of TBC
Issue Date: 5-Jan-2007
Citation: Selvaraj, M., Kawi, S. (2007-01-05). t-Butylation of p-cresol with t-butyl alcohol over mesoporous Al-MCM-41 molecular sieves. Microporous and Mesoporous Materials 98 (1-3) : 143-149. ScholarBank@NUS Repository.
Abstract: Selective liquid-phase t-butylation of p-cresol with t-butyl alcohol (t-BuOH) to produce 2-t-butyl-p-cresol (TBC) has been conducted over Al-MCM-41 catalysts with different Si/Al ratios. The effects of various reaction parameters such as temperature, reaction time and nt-BuOH:np-cresol ratio on the conversion of p-cresol and the selectivity of TBC have been systematically investigated as well. When the Si/Al ratio of Al-MCM-41 catalysts is increased from 21 to 104 (respectively yielding Al-MCM-41(21), Al-MCM-41(42), Al-MCM-41(62), Al-MCM-41(83) and Al-MCM-41(104)), both the conversion of p-cresol and the yield and selectivity of TBC decrease due to the decrease of the number of Brønsted acid sites of the Al-MCM-41 catalysts. Al-MCM-41(21) catalyst is found to give the highest conversion of p-cresol (88.2%) and the highest selectivity of TBC (90.40%) under the optimal nt-BuOH:np-cresol mole ratio of 2:1, the optimal reaction temperature of 90 °C and the optimal reaction time of 2 h. Furthermore, Al-MCM-41(21) can be recycled up to at least four times without losing its catalytic performance for butylation reaction. © 2006 Elsevier Inc. All rights reserved.
Source Title: Microporous and Mesoporous Materials
ISSN: 13871811
DOI: 10.1016/j.micromeso.2006.08.020
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Apr 10, 2021


checked on Apr 2, 2021

Page view(s)

checked on Apr 12, 2021

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.