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Design, construction and commissioning of a packed bed reactor system for methane to methanol conversion
The direct conversion of methane to methanol can have great economic implications and have been under extensive research for the past century. It is speculated that platinum-based catalysts may achieve this due to its ability to adsorb molecular oxygen as reactive surface oxygen species that may rea...
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| Format: | Thesis |
| Language: | English |
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Department of Chemical Engineering
2022
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| _version_ | 1867613292522897408 |
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| access_status_str | Open Access |
| author | Guo, Junfeng |
| author2 | van Steen, Eric |
| author_browse | Guo, Junfeng van Steen, Eric |
| author_facet | van Steen, Eric Guo, Junfeng |
| author_sort | Guo, Junfeng |
| collection | Thesis |
| description | The direct conversion of methane to methanol can have great economic implications and have been under extensive research for the past century. It is speculated that platinum-based catalysts may achieve this due to its ability to adsorb molecular oxygen as reactive surface oxygen species that may react with methane to form methanol. The selective conversion to methanol over such a catalyst might be possible through site blocking action with in presence of steam and/or high oxygen partial pressures as well as the presence of a promoter. Thus, a packed bed reactor system capable of safely operating under high pressures (< 50 bar) is designed and constructed to investigate the performance of platinum-based catalysts in the direct oxidative conversion of methane to methanol whilst co-feeding steam. The design procedure is carried out from flowsheet development to the detailed design of individual units of the reactor system. The constructed reactor system is built around a quartz lined microreactor 200 mm long and 2.4 mm in diameter to minimize risks associated with the flammability of methane and oxygen mixtures. A method for complete product analysis of all carbon containing reaction products using gas chromatography with flame ionization detector in conjunction with an oxidizer-methanizer microreactor is developed which is capable of quantifying minor carbon containing reaction products formed at low conversions with yields greater than 10 μmol/mol. Flow, pressure and temperature controls are also developed for the reactor system to ensure steady state operation. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/36865 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:49.949Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| 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:11427/36865 Design, construction and commissioning of a packed bed reactor system for methane to methanol conversion Guo, Junfeng van Steen, Eric Chemical Engineering The direct conversion of methane to methanol can have great economic implications and have been under extensive research for the past century. It is speculated that platinum-based catalysts may achieve this due to its ability to adsorb molecular oxygen as reactive surface oxygen species that may react with methane to form methanol. The selective conversion to methanol over such a catalyst might be possible through site blocking action with in presence of steam and/or high oxygen partial pressures as well as the presence of a promoter. Thus, a packed bed reactor system capable of safely operating under high pressures (< 50 bar) is designed and constructed to investigate the performance of platinum-based catalysts in the direct oxidative conversion of methane to methanol whilst co-feeding steam. The design procedure is carried out from flowsheet development to the detailed design of individual units of the reactor system. The constructed reactor system is built around a quartz lined microreactor 200 mm long and 2.4 mm in diameter to minimize risks associated with the flammability of methane and oxygen mixtures. A method for complete product analysis of all carbon containing reaction products using gas chromatography with flame ionization detector in conjunction with an oxidizer-methanizer microreactor is developed which is capable of quantifying minor carbon containing reaction products formed at low conversions with yields greater than 10 μmol/mol. Flow, pressure and temperature controls are also developed for the reactor system to ensure steady state operation. 2022-10-21T12:53:59Z 2022-10-21T12:53:59Z 2018 2022-10-20T12:22:50Z Master Thesis Masters MSc http://hdl.handle.net/11427/36865 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment |
| spellingShingle | Chemical Engineering Guo, Junfeng Design, construction and commissioning of a packed bed reactor system for methane to methanol conversion |
| thesis_degree_str | Master's |
| title | Design, construction and commissioning of a packed bed reactor system for methane to methanol conversion |
| title_full | Design, construction and commissioning of a packed bed reactor system for methane to methanol conversion |
| title_fullStr | Design, construction and commissioning of a packed bed reactor system for methane to methanol conversion |
| title_full_unstemmed | Design, construction and commissioning of a packed bed reactor system for methane to methanol conversion |
| title_short | Design, construction and commissioning of a packed bed reactor system for methane to methanol conversion |
| title_sort | design construction and commissioning of a packed bed reactor system for methane to methanol conversion |
| topic | Chemical Engineering |
| url | http://hdl.handle.net/11427/36865 |
| work_keys_str_mv | AT guojunfeng designconstructionandcommissioningofapackedbedreactorsystemformethanetomethanolconversion |