Ramli, Zainab and Mohd. Yusoff, Noor Aishikin and Hamdan, Halimaton (2007) Delaminated zeolite, ITQ-6 as heterogeneous catalyst for friedel crafts alkylation. The Malaysian Journal of Analytical Sciences, 11 (1). pp. 84-92. ISSN 1394-2506
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Official URL: http://www.ukm.my/mjas/v11_n1/13_233C1-1.pdf
Abstract
The ability of ITQ-6, a kind of mesoporous zeolitic material to replace microporous zeolite as catalyst has attracted particular attention. In this study, modification of a precursor of microporous ferrierite, PREFER to mesoporous material, ITQ-6 was carried out by delamination technique. The XRD results show that the crystalline phase of PREFER diminished for the sample after delamination. Porosity study of the ITQ-6 sample shows formation of homogeneous mesopores in the size between 3.5-4.0 nm. The acidity study indicates that ITQ-6 still contains appreciable amounts of Brönsted and Lewis acidities. Catalytic evaluation of the resulting material, ITQ-6 was carried out in the alkylation of resorcinol with methyl tert-butyl ether which gave 4-tert-butyl resorcinol and 4,6-di-tert-butyl resorcinol as main products. The conversion of resorcinol when using ITQ-6 was ten times higher than ferrierite, FER with similar selectivity of disubstituted product. It shows that the mesoporosity of ITQ-6 was responsible for the higher activity of the catalyst in the reaction.
Item Type: | Article |
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Uncontrolled Keywords: | mesoporous ITQ-6, microporous FER, alkylation of resorcinol |
Subjects: | Q Science > QB Astronomy |
Divisions: | Science |
ID Code: | 8144 |
Deposited By: | Norshiela Buyamin |
Deposited On: | 30 Mar 2009 00:58 |
Last Modified: | 19 Nov 2012 05:09 |
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