Group 4 permethylindenyl complexes for slurry-phase polymerisation of ethylene
A series of ten well-defined group 4 ansa-bridged permethylindenyl complexes have been prepared, fully characterised and supported on inorganic solid supports. These catalysts were investigated in the slurry-phase polymerisation of ethylene. A range of inorganic solid supports have been utilised; so...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Royal Society of Chemistry
2019
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| _version_ | 1797066259851902976 |
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| author | Lamb, J Buffet, J Turner, Z O'Hare, D |
| author_facet | Lamb, J Buffet, J Turner, Z O'Hare, D |
| author_sort | Lamb, J |
| collection | OXFORD |
| description | A series of ten well-defined group 4 ansa-bridged permethylindenyl complexes have been prepared, fully characterised and supported on inorganic solid supports. These catalysts were investigated in the slurry-phase polymerisation of ethylene. A range of inorganic solid supports have been utilised; solid polymethylaluminoxane (sMAO), MAO modified layered double hydroxide (LDHMAO) and MAO modified silica (SSMAO). The sMAO supported catalytic systems exhibit some of the highest slurry-phase polymerisation activities reported in literature with activities reaching 9509 kg PE mol M-1 h -1 bar -1 for Me2 SB(Cp Me ,I∗)ZrMe 2 at 80 °C after 5 minutes of polymerisation; 34% more active than an industrial standard under similar conditions. These systems produce polyethylenes with low molecular weights, M w , reaching as low as 46 kg mol -1 for E- Me2 SB(Cp nBu ,I∗)ZrCl 2 at 90 °C after 30 minutes of polymerisation with a uniform, mono-disperse "popcorn" morphology. The sMAO supported systems show much higher catalytic activities and much more industrially desirable polyethylene morphology than the same complexes supported on LDHMAO and SSMAO. |
| first_indexed | 2024-03-06T21:39:54Z |
| format | Journal article |
| id | oxford-uuid:478db80d-1b10-4cb3-aead-8414e4f1b009 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:39:54Z |
| publishDate | 2019 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | oxford-uuid:478db80d-1b10-4cb3-aead-8414e4f1b0092022-03-26T15:20:49ZGroup 4 permethylindenyl complexes for slurry-phase polymerisation of ethyleneJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:478db80d-1b10-4cb3-aead-8414e4f1b009EnglishSymplectic Elements at OxfordRoyal Society of Chemistry2019Lamb, JBuffet, JTurner, ZO'Hare, DA series of ten well-defined group 4 ansa-bridged permethylindenyl complexes have been prepared, fully characterised and supported on inorganic solid supports. These catalysts were investigated in the slurry-phase polymerisation of ethylene. A range of inorganic solid supports have been utilised; solid polymethylaluminoxane (sMAO), MAO modified layered double hydroxide (LDHMAO) and MAO modified silica (SSMAO). The sMAO supported catalytic systems exhibit some of the highest slurry-phase polymerisation activities reported in literature with activities reaching 9509 kg PE mol M-1 h -1 bar -1 for Me2 SB(Cp Me ,I∗)ZrMe 2 at 80 °C after 5 minutes of polymerisation; 34% more active than an industrial standard under similar conditions. These systems produce polyethylenes with low molecular weights, M w , reaching as low as 46 kg mol -1 for E- Me2 SB(Cp nBu ,I∗)ZrCl 2 at 90 °C after 30 minutes of polymerisation with a uniform, mono-disperse "popcorn" morphology. The sMAO supported systems show much higher catalytic activities and much more industrially desirable polyethylene morphology than the same complexes supported on LDHMAO and SSMAO. |
| spellingShingle | Lamb, J Buffet, J Turner, Z O'Hare, D Group 4 permethylindenyl complexes for slurry-phase polymerisation of ethylene |
| title | Group 4 permethylindenyl complexes for slurry-phase polymerisation of ethylene |
| title_full | Group 4 permethylindenyl complexes for slurry-phase polymerisation of ethylene |
| title_fullStr | Group 4 permethylindenyl complexes for slurry-phase polymerisation of ethylene |
| title_full_unstemmed | Group 4 permethylindenyl complexes for slurry-phase polymerisation of ethylene |
| title_short | Group 4 permethylindenyl complexes for slurry-phase polymerisation of ethylene |
| title_sort | group 4 permethylindenyl complexes for slurry phase polymerisation of ethylene |
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