Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene

A series of alkylsilylated fluorinated zirconia and zeolite containing titanium were prepared by titanium impregnation followed by fluorination and alkylsilylation of zirconium oxide and NaY zeolite. These samples were characterized by 13C and 29Si magic angle spinning nuclear magnetic resonance spe...

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Main Author:	Ng, Yun Hau
Format:	Thesis
Language:	English
Published:	2005
Subjects:	QD Chemistry
Online Access:	http://eprints.utm.my/id/eprint/4333/1/NGYunHauMFS2005.pdf
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id	my-utm-ep.4333
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spelling	my-utm-ep.43332018-01-22T04:43:35Z Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene 2005-08 Ng, Yun Hau QD Chemistry A series of alkylsilylated fluorinated zirconia and zeolite containing titanium were prepared by titanium impregnation followed by fluorination and alkylsilylation of zirconium oxide and NaY zeolite. These samples were characterized by 13C and 29Si magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR), x-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-VIS), hydrophobicity measurement, Brunner, Emmet and Teller (BET) surface area analysis and energy dispersive x-ray analysis (EDAX). The materials have been designed for epoxidation of 1-octene with aqueous hydrogen peroxide as oxidant. Epoxidation of alkenes is one of the most important methods of functionalizing simple hydrocarbons. Analysis by gas chromatography-mass spectrometry (GC-MS) indicates that 1,2-epoxyoctane is the sole product of the reaction with 100% selectivity. The alkylsilylated fluorinated catalysts were more active and more efficient than the conventional titania-silica and zirconia-silica mixed oxides in linear alkene epoxidation; enhanced by the presence of alkylsilane and fluorine groups in the catalysts. Modification with alkylsilane was aimed to induce the hydrophobic behaviour of zirconia and zeolite which are hydrophilic in nature; whereas fluorine was chosen for its electron-drawing effect which further activates the titanium active sites. 2005-08 Thesis http://eprints.utm.my/id/eprint/4333/ http://eprints.utm.my/id/eprint/4333/1/NGYunHauMFS2005.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Ng, Yun Hau Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene
description	A series of alkylsilylated fluorinated zirconia and zeolite containing titanium were prepared by titanium impregnation followed by fluorination and alkylsilylation of zirconium oxide and NaY zeolite. These samples were characterized by 13C and 29Si magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR), x-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-VIS), hydrophobicity measurement, Brunner, Emmet and Teller (BET) surface area analysis and energy dispersive x-ray analysis (EDAX). The materials have been designed for epoxidation of 1-octene with aqueous hydrogen peroxide as oxidant. Epoxidation of alkenes is one of the most important methods of functionalizing simple hydrocarbons. Analysis by gas chromatography-mass spectrometry (GC-MS) indicates that 1,2-epoxyoctane is the sole product of the reaction with 100% selectivity. The alkylsilylated fluorinated catalysts were more active and more efficient than the conventional titania-silica and zirconia-silica mixed oxides in linear alkene epoxidation; enhanced by the presence of alkylsilane and fluorine groups in the catalysts. Modification with alkylsilane was aimed to induce the hydrophobic behaviour of zirconia and zeolite which are hydrophilic in nature; whereas fluorine was chosen for its electron-drawing effect which further activates the titanium active sites.
format	Thesis
qualification_level	Master's degree
author	Ng, Yun Hau
author_facet	Ng, Yun Hau
author_sort	Ng, Yun Hau
title	Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene
title_short	Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene
title_full	Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene
title_fullStr	Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene
title_full_unstemmed	Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene
title_sort	design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2005
url	http://eprints.utm.my/id/eprint/4333/1/NGYunHauMFS2005.pdf
_version_	1747814517241282560

Design and tailoring of a novel heterogeneous catalyst for epoxidation of 1-octene

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