Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/40451 |
Resumo: | The solvent-free acetalization of glycerol with acetone was investigated using as catalyst UAV-59, a Coordination Polymer based on nitrilo(trimethylphosphonic acid) and Gd3+, at 25 °C and 55 °C, with various glycerol/acetone (Gly/Ace) molar ratios. The reaction yielded solketal, a five-membered acetal, and 2,2-dimethyl-1,3-dioxan-5-ol, a six-membered acetal. UAV-59's catalytic activity was influenced by temperature, with the highest conversion (94%) achieved at 55 °C, a 1/10 Gly/Ace ratio, and 5% catalyst. The selectivity for solketal remained consistent (95–98%) across all conditions. Reaction kinetics and selectivity profiles were compared, catalyst stability was assessed, and results were benchmarked against Metal Organic Framework catalysts from the literature. The heterogeneous nature of catalysis was confirmed through leaching tests, and the catalyst's chemical features were analyzed using ATR FT-IR spectra and X-ray diffraction patterns, indicating that UAV-59's crystalline structure was preserved during the reaction. |
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Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivityThe solvent-free acetalization of glycerol with acetone was investigated using as catalyst UAV-59, a Coordination Polymer based on nitrilo(trimethylphosphonic acid) and Gd3+, at 25 °C and 55 °C, with various glycerol/acetone (Gly/Ace) molar ratios. The reaction yielded solketal, a five-membered acetal, and 2,2-dimethyl-1,3-dioxan-5-ol, a six-membered acetal. UAV-59's catalytic activity was influenced by temperature, with the highest conversion (94%) achieved at 55 °C, a 1/10 Gly/Ace ratio, and 5% catalyst. The selectivity for solketal remained consistent (95–98%) across all conditions. Reaction kinetics and selectivity profiles were compared, catalyst stability was assessed, and results were benchmarked against Metal Organic Framework catalysts from the literature. The heterogeneous nature of catalysis was confirmed through leaching tests, and the catalyst's chemical features were analyzed using ATR FT-IR spectra and X-ray diffraction patterns, indicating that UAV-59's crystalline structure was preserved during the reaction.Elsevier2024-01-31T17:11:37Z2023-12-01T00:00:00Z2023-12info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/40451eng0920-586110.1016/j.cattod.2023.114296Santos-Vieira, Isabel C. M. S.Mendes, Ricardo F.Almeida Paz, Filipe A.Rocha, JoãoSimões, Mário M. Q.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:19:24Zoai:ria.ua.pt:10773/40451Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:10:30.563698Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity |
title |
Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity |
spellingShingle |
Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity Santos-Vieira, Isabel C. M. S. |
title_short |
Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity |
title_full |
Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity |
title_fullStr |
Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity |
title_full_unstemmed |
Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity |
title_sort |
Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity |
author |
Santos-Vieira, Isabel C. M. S. |
author_facet |
Santos-Vieira, Isabel C. M. S. Mendes, Ricardo F. Almeida Paz, Filipe A. Rocha, João Simões, Mário M. Q. |
author_role |
author |
author2 |
Mendes, Ricardo F. Almeida Paz, Filipe A. Rocha, João Simões, Mário M. Q. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Santos-Vieira, Isabel C. M. S. Mendes, Ricardo F. Almeida Paz, Filipe A. Rocha, João Simões, Mário M. Q. |
description |
The solvent-free acetalization of glycerol with acetone was investigated using as catalyst UAV-59, a Coordination Polymer based on nitrilo(trimethylphosphonic acid) and Gd3+, at 25 °C and 55 °C, with various glycerol/acetone (Gly/Ace) molar ratios. The reaction yielded solketal, a five-membered acetal, and 2,2-dimethyl-1,3-dioxan-5-ol, a six-membered acetal. UAV-59's catalytic activity was influenced by temperature, with the highest conversion (94%) achieved at 55 °C, a 1/10 Gly/Ace ratio, and 5% catalyst. The selectivity for solketal remained consistent (95–98%) across all conditions. Reaction kinetics and selectivity profiles were compared, catalyst stability was assessed, and results were benchmarked against Metal Organic Framework catalysts from the literature. The heterogeneous nature of catalysis was confirmed through leaching tests, and the catalyst's chemical features were analyzed using ATR FT-IR spectra and X-ray diffraction patterns, indicating that UAV-59's crystalline structure was preserved during the reaction. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-12-01T00:00:00Z 2023-12 2024-01-31T17:11:37Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/40451 |
url |
http://hdl.handle.net/10773/40451 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0920-5861 10.1016/j.cattod.2023.114296 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137755545993216 |