Lee, Siew Ling (2009) Physical properties and catalytic behaviour of sulfate-vanadium modified silica-titania aerogel. In: Proceedings of Second International Conference and Workshops on Basic and Applied Sciences & Regional Annual Fundamental Science Seminar 2009. Faculty of Science, Universiti Teknologi Malaysia, pp. 85-88. ISBN 978-983-9805-73-4
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Official URL: http://www.penerbit.utm.my
Abstract
Both vanadium and sulfate modified silica-titania aerogels have shown excellent catalytic performance as bifunctional catalysts in producing diols from 1-octene. Pyridine adsorption study revealed the increase of Brønsted acid sites in sulfated vanadium loaded silica-titania aerogel (SO4_V/ST) as compared to that of sulfated silica-titania aerogel (SO4/ST). This phenomenon could be resulted from synergy effect of co-existence of sulfate and vanadium on the surface of silica-titania. In contrast, no noticeable Brønsted acidity was detected in vanadium solely loaded silica-titania aerogel (V/ST). The catalyst results, however, showed that SO4/ST was a better bifunctional catalyst, followed by V/ST and SO4_V/ST. The formation of vanadium sulfate (VOSO4) may have retarded the catalytic activity of SO4_V/ST.
| Item Type: | Book Section |
|---|---|
| Uncontrolled Keywords: | silica-titania aerogel |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Science |
| ID Code: | 9010 |
| Deposited By: | Dr Siew Ling Lee |
| Deposited On: | 30 Jun 2009 07:34 |
| Last Modified: | 14 Aug 2017 04:39 |
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