SBA-15 as a support for nickel-based catalysts for polymerization reactions
Two mesoporous SBA-15 materials with different morphologies (spherical and fiber-shaped) were synthesized and evaluated as supports for nickel-based catalysts for polymerization reactions. The supports were pretreated with trimethylaluminum (TMA), and the catalyst dibromo-bis(4-amino-2,3,5,6-tetr...
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ri-123456789-295982021-02-15T21:59:31Z SBA-15 as a support for nickel-based catalysts for polymerization reactions Pergher, Sibele Berenice Castellã Schwanke, Anderson J. Favero, Cristiano Balzer, Rosana Gusmão, Katia Bernardo SBA-15 Mesoporous Morphological control Polymerization Two mesoporous SBA-15 materials with different morphologies (spherical and fiber-shaped) were synthesized and evaluated as supports for nickel-based catalysts for polymerization reactions. The supports were pretreated with trimethylaluminum (TMA), and the catalyst dibromo-bis(4-amino-2,3,5,6-tetramethylimino)acenaphthene nickel(II) was attached to the supports and activated with TMA or MAO (methylaluminoxane). Characterization showed that the insertion of cetyltrimethylammonium bromide (CTABr) as a cosurfactant led to spherical SBA-15 with a decrease in particle and pore sizes to 4.8 nm compared to 6.5 nm in traditional fiber-shaped SBA-15. The spherical SBA-15 showed thicker walls than the fiber-shaped SBA-15, attributed to the increase in functional groups of the cosurfactant. The different spherical and fiber-shaped morphologies did not show any significant difference in the productivity of polyethylene. The catalyst supported on spherical SBA-15 materials showed 58% productivity compared to its homogeneous analogue using TMA as a cocatalyst 2020-07-14T14:34:02Z 2020-07-14T14:34:02Z 2018 article SCHWANKE, Anderson; FAVERO, Cristiano; BALZER, Rosana; GUSMÃO, Katia Bernardo; PERGHER, Sibele Berenice Castellã. SBA-15 as a Support for Nickel-Based Catalysts for Polymerization Reactions. Journal Of The Brazilian Chemical Society, Campinas, v. 29, n. 2, p. 328-333, fev. 2018. ISSN 1678-4790 versão online. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532018000200328&lng=en&nrm=iso. Acesso em: 14 jul. 2020. http://dx.doi.org/10.21577/0103-5053.20170144. 0103-5053 (print), 1678-4790 (online) https://repositorio.ufrn.br/jspui/handle/123456789/29598 10.21577/0103-5053.20170144 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Sociedade Brasileira de Química |
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SBA-15 Mesoporous Morphological control Polymerization |
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SBA-15 Mesoporous Morphological control Polymerization Pergher, Sibele Berenice Castellã Schwanke, Anderson J. Favero, Cristiano Balzer, Rosana Gusmão, Katia Bernardo SBA-15 as a support for nickel-based catalysts for polymerization reactions |
description |
Two mesoporous SBA-15 materials with different morphologies (spherical and fiber-shaped)
were synthesized and evaluated as supports for nickel-based catalysts for polymerization
reactions. The supports were pretreated with trimethylaluminum (TMA), and the catalyst
dibromo-bis(4-amino-2,3,5,6-tetramethylimino)acenaphthene nickel(II) was attached to the
supports and activated with TMA or MAO (methylaluminoxane). Characterization showed that the
insertion of cetyltrimethylammonium bromide (CTABr) as a cosurfactant led to spherical SBA-15
with a decrease in particle and pore sizes to 4.8 nm compared to 6.5 nm in traditional fiber-shaped
SBA-15. The spherical SBA-15 showed thicker walls than the fiber-shaped SBA-15, attributed
to the increase in functional groups of the cosurfactant. The different spherical and fiber-shaped
morphologies did not show any significant difference in the productivity of polyethylene. The
catalyst supported on spherical SBA-15 materials showed 58% productivity compared to its
homogeneous analogue using TMA as a cocatalyst |
format |
article |
author |
Pergher, Sibele Berenice Castellã Schwanke, Anderson J. Favero, Cristiano Balzer, Rosana Gusmão, Katia Bernardo |
author_facet |
Pergher, Sibele Berenice Castellã Schwanke, Anderson J. Favero, Cristiano Balzer, Rosana Gusmão, Katia Bernardo |
author_sort |
Pergher, Sibele Berenice Castellã |
title |
SBA-15 as a support for nickel-based catalysts for polymerization reactions |
title_short |
SBA-15 as a support for nickel-based catalysts for polymerization reactions |
title_full |
SBA-15 as a support for nickel-based catalysts for polymerization reactions |
title_fullStr |
SBA-15 as a support for nickel-based catalysts for polymerization reactions |
title_full_unstemmed |
SBA-15 as a support for nickel-based catalysts for polymerization reactions |
title_sort |
sba-15 as a support for nickel-based catalysts for polymerization reactions |
publisher |
Sociedade Brasileira de Química |
publishDate |
2020 |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/29598 |
work_keys_str_mv |
AT perghersibeleberenicecastella sba15asasupportfornickelbasedcatalystsforpolymerizationreactions AT schwankeandersonj sba15asasupportfornickelbasedcatalystsforpolymerizationreactions AT faverocristiano sba15asasupportfornickelbasedcatalystsforpolymerizationreactions AT balzerrosana sba15asasupportfornickelbasedcatalystsforpolymerizationreactions AT gusmaokatiabernardo sba15asasupportfornickelbasedcatalystsforpolymerizationreactions |
_version_ |
1773958053530435584 |