Universiti Teknologi Malaysia Institutional Repository

Delaminated zeolite, ITQ-6 as heterogeneous catalyst for friedel crafts alkylation

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

[img]
Preview
PDF
2477Kb

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
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

Repository Staff Only: item control page