IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION
<span style="font-family: Calibri; font-size: medium;">Bis(2-R-ind)ZrCl<sub>2</sub> (R: H or phenyl) was supported on different types of silica by in situ impregnation method and used for ethylene polymerization. In this method, the step of catalyst loading on support was...
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Reaserch Institute of Petroleum Industry
2014-03-01
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Series: | Journal of Petroleum Science and Technology |
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Online Access: | https://jpst.ripi.ir/article_331_d87022ba17b5c2a3038c5d7ab470af2e.pdf |
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author | saeid ahmadjo hassan arabi Gholam Zohuri Gholam Nejabat Mojtaba Omidvar Mostafa Ahmadi Mohamad Mortazavi |
author_facet | saeid ahmadjo hassan arabi Gholam Zohuri Gholam Nejabat Mojtaba Omidvar Mostafa Ahmadi Mohamad Mortazavi |
author_sort | saeid ahmadjo |
collection | DOAJ |
description | <span style="font-family: Calibri; font-size: medium;">Bis(2-R-ind)ZrCl<sub>2</sub> (R: H or phenyl) was supported on different types of silica by in situ impregnation method and used for ethylene polymerization. In this method, the step of catalyst loading on support was eliminated and common alkyl aluminum (triisobutylaluminum, TiBA) cocatalyst was used instead of expensive methyl aluminiumoxane (MAO) cocatalyst in the polymerization. The effect of surface area of silica on the performance of the supported catalysts using three different types of silica including EP12 (390 m<sup>2</sup>/gr.), PQ3060 (570 m<sup>2</sup>/gr.) and MCM-41 (1100 m<sup>2</sup>/gr.) was investigated. The surface area had a more critical role relative to other characteristics of the support in the performance of catalysts. By using MCM-41 as support, the kinetic stability was enhanced. The activity of the supported catalysts was increased by increasing the surface area of silica in the order of MCM-41 > PQ3060 > EP12. The morphology of polymer particles was improved and reactor fouling was eliminated by supporting the catalyst.</span> |
first_indexed | 2024-12-10T08:27:55Z |
format | Article |
id | doaj.art-69f760354383436a83293f9cb140a40c |
institution | Directory Open Access Journal |
issn | 2251-659X 2645-3312 |
language | English |
last_indexed | 2024-12-10T08:27:55Z |
publishDate | 2014-03-01 |
publisher | Reaserch Institute of Petroleum Industry |
record_format | Article |
series | Journal of Petroleum Science and Technology |
spelling | doaj.art-69f760354383436a83293f9cb140a40c2022-12-22T01:56:10ZengReaserch Institute of Petroleum IndustryJournal of Petroleum Science and Technology2251-659X2645-33122014-03-0141212910.22078/jpst.2014.331331IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATIONsaeid ahmadjo0hassan arabi1Gholam Zohuri2Gholam Nejabat3Mojtaba Omidvar4Mostafa Ahmadi5Mohamad Mortazavi6Iran Polymer and Petrochemical InstituteIran Polymer and Petrochemical InstituteFerdowsi University of MashhadIran Polymer and Petrochemical InstituteIran Polymer and Petrochemical InstituteIran Polymer and Petrochemical InstituteIran Polymer and Petrochemical Institute<span style="font-family: Calibri; font-size: medium;">Bis(2-R-ind)ZrCl<sub>2</sub> (R: H or phenyl) was supported on different types of silica by in situ impregnation method and used for ethylene polymerization. In this method, the step of catalyst loading on support was eliminated and common alkyl aluminum (triisobutylaluminum, TiBA) cocatalyst was used instead of expensive methyl aluminiumoxane (MAO) cocatalyst in the polymerization. The effect of surface area of silica on the performance of the supported catalysts using three different types of silica including EP12 (390 m<sup>2</sup>/gr.), PQ3060 (570 m<sup>2</sup>/gr.) and MCM-41 (1100 m<sup>2</sup>/gr.) was investigated. The surface area had a more critical role relative to other characteristics of the support in the performance of catalysts. By using MCM-41 as support, the kinetic stability was enhanced. The activity of the supported catalysts was increased by increasing the surface area of silica in the order of MCM-41 > PQ3060 > EP12. The morphology of polymer particles was improved and reactor fouling was eliminated by supporting the catalyst.</span>https://jpst.ripi.ir/article_331_d87022ba17b5c2a3038c5d7ab470af2e.pdfin situ impregnationheterogeneous catalysismetallocenepolyethylenesilica |
spellingShingle | saeid ahmadjo hassan arabi Gholam Zohuri Gholam Nejabat Mojtaba Omidvar Mostafa Ahmadi Mohamad Mortazavi IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION Journal of Petroleum Science and Technology in situ impregnation heterogeneous catalysis metallocene polyethylene silica |
title | IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION |
title_full | IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION |
title_fullStr | IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION |
title_full_unstemmed | IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION |
title_short | IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION |
title_sort | in situ silica supported metallocene catalysts for ethylene polymerization |
topic | in situ impregnation heterogeneous catalysis metallocene polyethylene silica |
url | https://jpst.ripi.ir/article_331_d87022ba17b5c2a3038c5d7ab470af2e.pdf |
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