Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts
Bibliography: pages 131-138.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Chemical Engineering
2016
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613846847356928 |
|---|---|
| access_status_str | Open Access |
| author | Galatolo, Paul Joseph Victor |
| author2 | Moss, John |
| author_browse | Galatolo, Paul Joseph Victor Moss, John |
| author_facet | Moss, John Galatolo, Paul Joseph Victor |
| author_sort | Galatolo, Paul Joseph Victor |
| collection | Thesis |
| description | Bibliography: pages 131-138. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/21339 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:42:38.703Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| 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:11427/21339 Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts Galatolo, Paul Joseph Victor Moss, John Dry, Mark O'Connor, Cyril Chemical Engineering Bibliography: pages 131-138. In industry, the hydroformylation reaction is predominantly homogeneously catalysed using carbonyl complexes of cobalt and rhodium (1-3,45). The main disadvantage of homogeneous catalysts is that, especially for the longer chain hydrocarbon systems, very energy-intensive methods (such as distillation) are required to remove them from the reaction products. These separation techniques usually lead to losses of the catalyst. From an economic viewpoint, this is highly undesirable since the catalysts (especially rhodium) are expensive. Research has been carried out on encapsulating the catalysts within the cages of a zeolite, maintaining the activity of the catalyst while allowing it to be easily removed from the reaction medium ( eg. by filtration). However, all research reported so far has only considered rhodium catalysts (1,66-71,87). Furthermore, in most cases, leaching of the rhodium from the zeolite was significant enough to be undesirable. No successful research has been reported on encapsulating cobalt in zeolites for use as a hydroformylation catalyst. In this study, the synthesis of cobalt complexes encapsulated in the supercages of zeolite Y was attempted. The species initially present on the zeolites were analysed by Fourier-Transform Infrared Spectroscopy (FT-IR) and identified by comparison with the IR spectra of pure cobalt complexes synthesised independently in the laboratory. The impregnated catalysts were washed with various solvents to see if the cobalt complex remained in the zeolite. The impregnated zeolites were also tested as hydroformylation catalysts and compared with homogeneous catalysts. 2016-08-18T13:54:36Z 2016-08-18T13:54:36Z 1997 Master Thesis Masters MSc http://hdl.handle.net/11427/21339 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chemical Engineering Galatolo, Paul Joseph Victor Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts |
| thesis_degree_str | Master's |
| title | Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts |
| title_full | Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts |
| title_fullStr | Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts |
| title_full_unstemmed | Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts |
| title_short | Encapsulation of cobalt complexes in zeolite Y for use as hydroformylation catalysts |
| title_sort | encapsulation of cobalt complexes in zeolite y for use as hydroformylation catalysts |
| topic | Chemical Engineering |
| url | http://hdl.handle.net/11427/21339 |
| work_keys_str_mv | AT galatolopauljosephvictor encapsulationofcobaltcomplexesinzeoliteyforuseashydroformylationcatalysts |