Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/219706 |
Resumo: | The high PET consume, mainly as bottles, associated with rapid disposal and high resistance to ambient conditions and biological degradation lead to accumulation in the enviromental, constituting a worrying scenario in world level. Chemical recycle PET by glycolysis is an important alternative, once bis(hydroxiethyl)terephthalate (BHET), high added value monomer, can be obtained. In this context, this study approaches the use of titanate nanotubes (i.e. sodium/protonated titanate nanotubes) as catalyst for PET glycolysis. Reactional conditions, the origin and granulometry of PET flakes were evaluated (at 196 °C). Best results (BHET yield > 80%) were obtained for both catalyst in 3 h of reaction. The protonated titanate nanotubes catalyst were more efficient than sodium titanate nanotubes due to greater concentration of Brönsted and Lewis acid sites, indicated by TPD analyzes. |
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Lima, Gabrielle RitterMonteiro, Wesley FormentinScheid, Carolina MajoloLigabue, Rosane AngelicaSantana, Ruth Marlene Campomanes2021-04-09T04:24:54Z20191572-879Xhttp://hdl.handle.net/10183/219706001123939The high PET consume, mainly as bottles, associated with rapid disposal and high resistance to ambient conditions and biological degradation lead to accumulation in the enviromental, constituting a worrying scenario in world level. Chemical recycle PET by glycolysis is an important alternative, once bis(hydroxiethyl)terephthalate (BHET), high added value monomer, can be obtained. In this context, this study approaches the use of titanate nanotubes (i.e. sodium/protonated titanate nanotubes) as catalyst for PET glycolysis. Reactional conditions, the origin and granulometry of PET flakes were evaluated (at 196 °C). Best results (BHET yield > 80%) were obtained for both catalyst in 3 h of reaction. The protonated titanate nanotubes catalyst were more efficient than sodium titanate nanotubes due to greater concentration of Brönsted and Lewis acid sites, indicated by TPD analyzes.application/pdfengMCatalysis letters. Basel. Vol. 149 (2019), p. 1415-1426Politereftalato de etileno (PET)ReciclagemNanotubosChemical recyclingGlycolysisPETNanostructure catalystsTitanate nanotubesEvaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerizationinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001123939.pdf.txt001123939.pdf.txtExtracted Texttext/plain42524http://www.lume.ufrgs.br/bitstream/10183/219706/2/001123939.pdf.txt77af10b2be99384f4377c56434526bcdMD52ORIGINAL001123939.pdfTexto completo (inglês)application/pdf1734391http://www.lume.ufrgs.br/bitstream/10183/219706/1/001123939.pdf666c9cce2c4940e5bb39e57010e149a1MD5110183/2197062021-05-07 04:55:42.001591oai:www.lume.ufrgs.br:10183/219706Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-05-07T07:55:42Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization |
title |
Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization |
spellingShingle |
Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization Lima, Gabrielle Ritter Politereftalato de etileno (PET) Reciclagem Nanotubos Chemical recycling Glycolysis PET Nanostructure catalysts Titanate nanotubes |
title_short |
Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization |
title_full |
Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization |
title_fullStr |
Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization |
title_full_unstemmed |
Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization |
title_sort |
Evaluation of sodium/protonated titanate nanotubes catalysts in virgin and post consumer PET depolymerization |
author |
Lima, Gabrielle Ritter |
author_facet |
Lima, Gabrielle Ritter Monteiro, Wesley Formentin Scheid, Carolina Majolo Ligabue, Rosane Angelica Santana, Ruth Marlene Campomanes |
author_role |
author |
author2 |
Monteiro, Wesley Formentin Scheid, Carolina Majolo Ligabue, Rosane Angelica Santana, Ruth Marlene Campomanes |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Lima, Gabrielle Ritter Monteiro, Wesley Formentin Scheid, Carolina Majolo Ligabue, Rosane Angelica Santana, Ruth Marlene Campomanes |
dc.subject.por.fl_str_mv |
Politereftalato de etileno (PET) Reciclagem Nanotubos |
topic |
Politereftalato de etileno (PET) Reciclagem Nanotubos Chemical recycling Glycolysis PET Nanostructure catalysts Titanate nanotubes |
dc.subject.eng.fl_str_mv |
Chemical recycling Glycolysis PET Nanostructure catalysts Titanate nanotubes |
description |
The high PET consume, mainly as bottles, associated with rapid disposal and high resistance to ambient conditions and biological degradation lead to accumulation in the enviromental, constituting a worrying scenario in world level. Chemical recycle PET by glycolysis is an important alternative, once bis(hydroxiethyl)terephthalate (BHET), high added value monomer, can be obtained. In this context, this study approaches the use of titanate nanotubes (i.e. sodium/protonated titanate nanotubes) as catalyst for PET glycolysis. Reactional conditions, the origin and granulometry of PET flakes were evaluated (at 196 °C). Best results (BHET yield > 80%) were obtained for both catalyst in 3 h of reaction. The protonated titanate nanotubes catalyst were more efficient than sodium titanate nanotubes due to greater concentration of Brönsted and Lewis acid sites, indicated by TPD analyzes. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019 |
dc.date.accessioned.fl_str_mv |
2021-04-09T04:24:54Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/219706 |
dc.identifier.issn.pt_BR.fl_str_mv |
1572-879X |
dc.identifier.nrb.pt_BR.fl_str_mv |
001123939 |
identifier_str_mv |
1572-879X 001123939 |
url |
http://hdl.handle.net/10183/219706 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
MCatalysis letters. Basel. Vol. 149 (2019), p. 1415-1426 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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