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Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts
Gallium/H-ZSM-5 zeolite catalysts have been extensively researched for the aromatization of liquified petroleum gas (LPG). In 1989 BP and UOP collaborated to commission a pilot plant in Grangemouth, Scotland, for the aromatization of propane and butane. This plant, based on a technology called the C...
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| Format: | Thesis |
| Language: | Eng |
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Centre for Catalysis Research
2016
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| _version_ | 1867613236680982528 |
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| access_status_str | Open Access |
| author | Nash, Robin John |
| author2 | Dry, Mark |
| author_browse | Dry, Mark Nash, Robin John |
| author_facet | Dry, Mark Nash, Robin John |
| author_sort | Nash, Robin John |
| collection | Thesis |
| description | Gallium/H-ZSM-5 zeolite catalysts have been extensively researched for the aromatization of liquified petroleum gas (LPG). In 1989 BP and UOP collaborated to commission a pilot plant in Grangemouth, Scotland, for the aromatization of propane and butane. This plant, based on a technology called the Cyclar process, used continuous catalyst regeneration (CCR) and a gallium impregnated ZSM-5 zeolite catalyst to achieve yields of ca. 65% aromatics, mainly benzene, toluene and xylenes (BTX) [Guisnet and Gnep, 1992]. As a result of the Fischer-Tropsch process used by SASOL Ltd., South Africa is in an internationally unique position, in that it has a surplus of long chain linear alkenes with carbon numbers in the range C6-C8 . There could be large economic incentives to convert these alkenes into more valuable products, like alcohols or aromatics. Thus the purpose of this project was to determine if gallium/H-ZSM-5 catalysts, similar to those used in the Cyclar process, would be suitable for the aromatization of long chain alkenes. Three methods were investigated for the introduction of gallium into ZSM-5: (i) physical mixing with gallium oxide; (ii) impregnation by incipient wetness with gallium nitrate; (iii) ion-exchange with gallium nitrate. The catalysts were. tested with regard to their catalytic activity for the aromatization of 1-hexene and 1-octene. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/21518 |
| institution | University of Cape Town (South Africa) |
| language | Eng |
| last_indexed | 2026-06-10T12:32:56.154Z |
| 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 | Centre for Catalysis Research |
| publisherStr | Centre for Catalysis Research |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/21518 Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts Nash, Robin John Dry, Mark Catalysis Research Gallium/H-ZSM-5 zeolite catalysts have been extensively researched for the aromatization of liquified petroleum gas (LPG). In 1989 BP and UOP collaborated to commission a pilot plant in Grangemouth, Scotland, for the aromatization of propane and butane. This plant, based on a technology called the Cyclar process, used continuous catalyst regeneration (CCR) and a gallium impregnated ZSM-5 zeolite catalyst to achieve yields of ca. 65% aromatics, mainly benzene, toluene and xylenes (BTX) [Guisnet and Gnep, 1992]. As a result of the Fischer-Tropsch process used by SASOL Ltd., South Africa is in an internationally unique position, in that it has a surplus of long chain linear alkenes with carbon numbers in the range C6-C8 . There could be large economic incentives to convert these alkenes into more valuable products, like alcohols or aromatics. Thus the purpose of this project was to determine if gallium/H-ZSM-5 catalysts, similar to those used in the Cyclar process, would be suitable for the aromatization of long chain alkenes. Three methods were investigated for the introduction of gallium into ZSM-5: (i) physical mixing with gallium oxide; (ii) impregnation by incipient wetness with gallium nitrate; (iii) ion-exchange with gallium nitrate. The catalysts were. tested with regard to their catalytic activity for the aromatization of 1-hexene and 1-octene. 2016-08-24T13:00:51Z 2016-08-24T13:00:51Z 1994 Master Thesis Masters MSc http://hdl.handle.net/11427/21518 Eng application/pdf Centre for Catalysis Research Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Catalysis Research Nash, Robin John Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts |
| thesis_degree_str | Master's |
| title | Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts |
| title_full | Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts |
| title_fullStr | Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts |
| title_full_unstemmed | Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts |
| title_short | Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts |
| title_sort | aromatization of alkenes by gallium h zsm 5 zeolite catalysts |
| topic | Catalysis Research |
| url | http://hdl.handle.net/11427/21518 |
| work_keys_str_mv | AT nashrobinjohn aromatizationofalkenesbygalliumhzsm5zeolitecatalysts |