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Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites
Includes bibliographical references (p. 177-185).
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Chemical Engineering
2014
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| _version_ | 1867614236723642368 |
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| access_status_str | Open Access |
| author | Ntshabele, John Phenyo Pheko |
| author2 | Fletcher, Jack |
| author_browse | Fletcher, Jack Ntshabele, John Phenyo Pheko |
| author_facet | Fletcher, Jack Ntshabele, John Phenyo Pheko |
| author_sort | Ntshabele, John Phenyo Pheko |
| collection | Thesis |
| description | Includes bibliographical references (p. 177-185). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/5423 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:48:50.517Z |
| 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:11427/5423 Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites Ntshabele, John Phenyo Pheko Fletcher, Jack Böhringer, Walter Chemical Engineering Includes bibliographical references (p. 177-185). Selectivity in methylation of phenol over acidic catalysts depends primarily on temperature and the acidity of the catalyst. It is reported that direct methylation of phenol with methanol over weakly acidic catalysts yields predominantly o-cresol, whilst catalysts with medium acidity yield primarily o- and p-cresol, with significant anisole formation at lower temperatures (≈ 200°C). m-Cresol is, however, formed with significant selectivity over strongly acidic catalysts or at higher temperatures (typically 300°C and more). To date, only one industrial process is known which is selective to p-cresol but has the disadvantage of co-formaiton of inorganic salt, which is costly to dispose of. 2014-07-31T11:14:43Z 2014-07-31T11:14:43Z 2005 Master Thesis Masters MSc http://hdl.handle.net/11427/5423 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chemical Engineering Ntshabele, John Phenyo Pheko Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites |
| thesis_degree_str | Master's |
| title | Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites |
| title_full | Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites |
| title_fullStr | Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites |
| title_full_unstemmed | Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites |
| title_short | Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites |
| title_sort | acid catalysed alkylation of diphenyl ether with methanol over shape selective zeolites |
| topic | Chemical Engineering |
| url | http://hdl.handle.net/11427/5423 |
| work_keys_str_mv | AT ntshabelejohnphenyopheko acidcatalysedalkylationofdiphenyletherwithmethanolovershapeselectivezeolites |