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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Principais autores: Pergher, Sibele Berenice Castellã, Schwanke, Anderson J., Favero, Cristiano, Balzer, Rosana, Gusmão, Katia Bernardo
Formato: article
Idioma:English
Publicado em: Sociedade Brasileira de Química
Assuntos:
SBA-15
Mesoporous
Morphological control
Polymerization
Endereço do item:https://repositorio.ufrn.br/jspui/handle/123456789/29598
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spelling 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
institution Repositório Institucional
collection RI - UFRN
language English
topic SBA-15
Mesoporous
Morphological control
Polymerization
spellingShingle 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
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