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The selective oxidation of methane and propene over α-Bi2Mo3O12
Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2007.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Stellenbosch : University of Stellenbosch
2008
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| _version_ | 1867613802184310784 |
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| access_status_str | Open Access |
| author | Nel, Jacobus |
| author2 | Callanan, L. H. |
| author_browse | Callanan, L. H. Nel, Jacobus |
| author_facet | Callanan, L. H. Nel, Jacobus |
| author_sort | Nel, Jacobus |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2007. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/2053 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:41:56.100Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Stellenbosch : University of Stellenbosch |
| publisherStr | Stellenbosch : University of Stellenbosch |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/2053 The selective oxidation of methane and propene over α-Bi2Mo3O12 Nel, Jacobus Callanan, L. H. University of Stellenbosch. Faculty of Engineering. Dept. of Process Engineering. Dissertations -- Process engineering Theses -- Process engineering Heterogeneous catalysis Methane -- Oxidation Propene -- Oxidation Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2007. The catalytic selective oxidation of hydrocarbon molecules is the process where a selectively oxidized intermediate molecule is formed instead of the thermodynamically favoured total oxidation products, in the presence of a suitable catalyst. Examples are the selective oxidation of methane to synthesis gas at moderate temperatures, for which a catalyst is still needed and the selective oxidation of propene to acrolein over α-Bi2Mo3O12. The selective oxidation of propene over α-Bi2Mo3O12 occurs via a Mars-van Krevelen mechanism where the bulk oxygen in the catalyst is inserted into the propene molecule and leaves as part of the product, while being replaced with gaseous oxygen. From an economic perspective there is a need to produce synthesis gas from methane at low temperatures. It was seen in the literature that α-Bi2Mo3O12 is a mixed metal oxide that might be capable of achieving this. The feasibility of the selective oxidation of methane to synthesis gas with α-Bi2Mo3O12 was therefore investigated. However, it was found that the selective oxidation of methane over α-Bi2Mo3O12 is not feasible at moderate temperatures. To circumvent the problem of producing synthesis gas at low temperatures a membrane reactor was suggested that might be able to produce synthesis gas at moderate temperatures with conventional selective methane oxidation catalysts that thermodynamically favours carbon dioxide formation at low temperatures. No time on-stream experiments had been done previously for the selective oxidation of ... Masters 2008-01-16T07:58:25Z 2010-06-01T08:39:36Z 2008-01-16T07:58:25Z 2010-06-01T08:39:36Z 2007-03 Thesis http://hdl.handle.net/10019.1/2053 en University of Stellenbosch 1068211 bytes application/pdf application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Dissertations -- Process engineering Theses -- Process engineering Heterogeneous catalysis Methane -- Oxidation Propene -- Oxidation Nel, Jacobus The selective oxidation of methane and propene over α-Bi2Mo3O12 |
| title | The selective oxidation of methane and propene over α-Bi2Mo3O12 |
| title_full | The selective oxidation of methane and propene over α-Bi2Mo3O12 |
| title_fullStr | The selective oxidation of methane and propene over α-Bi2Mo3O12 |
| title_full_unstemmed | The selective oxidation of methane and propene over α-Bi2Mo3O12 |
| title_short | The selective oxidation of methane and propene over α-Bi2Mo3O12 |
| title_sort | selective oxidation of methane and propene over α bi2mo3o12 |
| topic | Dissertations -- Process engineering Theses -- Process engineering Heterogeneous catalysis Methane -- Oxidation Propene -- Oxidation |
| url | http://hdl.handle.net/10019.1/2053 |
| work_keys_str_mv | AT neljacobus theselectiveoxidationofmethaneandpropeneoverabi2mo3o12 AT neljacobus selectiveoxidationofmethaneandpropeneoverabi2mo3o12 |