Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman
Bibliography: leaves 89-94.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Chemical Engineering
2014
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867614078969577472 |
|---|---|
| access_status_str | Open Access |
| author | Jacobs, Kelvin Stephen |
| author2 | Van Steen, Eric |
| author_browse | Jacobs, Kelvin Stephen Van Steen, Eric |
| author_facet | Van Steen, Eric Jacobs, Kelvin Stephen |
| author_sort | Jacobs, Kelvin Stephen |
| collection | Thesis |
| description | Bibliography: leaves 89-94. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/5314 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:46:20.072Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Chemical Engineering |
| publisherStr | Department of Chemical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/5314 Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman Jacobs, Kelvin Stephen Van Steen, Eric Chemical Engineering Bibliography: leaves 89-94. Metathesis is a very versatile reaction, which allows the conversion of Simple, relatively inexpensive olefins into specialty, high-purity olefins which are useful intermediates in the fragrance, agricultural and many other specialty chemical industries. Supported molybdenum on alumina is an active heterogeneous catalyst for the metathesis of olefins. Its activity, as a function of time, passes a maximum. It is known that the activity of molybdenum-based catalyst increases up to monolayer capacity. Catalysts with various Mo-Ioadings were prepared by controlled adsorption method using ammonium heptamolybdate as a precursor. A catalyst using a new slurry impregnation method was also prepared for comparative reasons. Before the metathesis process, the molybdenum catalysts are activated at 550°C under N2 in a fixed bed reactor. The loading of the prepared catalysts was below and above monolayer capacity. It was observed that up to a loading 0.3 g Mo03 per g Ab03 the initial conversion increases more than proportional to the Mo03- loading. The catalysts with a Mo03-loading higher than 0.3 g Mo03 per gram AIz03 show initially a lower activity, ie. The activity per molybdenum atom in the catalyst decreases. With increasing time-on-stream the activity of the catalysts declines. The decline is much stronger over the catalysts with a rligher initial activity. 2014-07-31T11:09:21Z 2014-07-31T11:09:21Z 2002 Master Thesis Masters MSc http://hdl.handle.net/11427/5314 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chemical Engineering Jacobs, Kelvin Stephen Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman |
| thesis_degree_str | Master's |
| title | Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman |
| title_full | Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman |
| title_fullStr | Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman |
| title_full_unstemmed | Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman |
| title_short | Investigation of the activity and selectivity of the MoO3/AI2O3 catalyst and the structural investigation using in-situ raman |
| title_sort | investigation of the activity and selectivity of the moo3 ai2o3 catalyst and the structural investigation using in situ raman |
| topic | Chemical Engineering |
| url | http://hdl.handle.net/11427/5314 |
| work_keys_str_mv | AT jacobskelvinstephen investigationoftheactivityandselectivityofthemoo3ai2o3catalystandthestructuralinvestigationusinginsituraman |