Výsledky vyhledávání - "Fátima C. Teixeira"

Akademický článek

New triazinephosphonate dopants for Nafion proton exchange membranes (PEM)

Autor: Fátima C. Teixeira, António P. S. Teixeira, C. M. Rangel

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1623-1634 (2024)

A new paradigm for energy is underway demanding decarbonized energy systems. Some of them rely on emerging electrochemical devices, crucial in hydrogen technologies, including fuel cells, CO2 and water electrolysers, whose applications and performanc

Externí odkaz: https://doaj.org/article/835b87df908e4d6bba8e82e4e142c7d2

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Akademický článek

Molecular modeling of the interaction of novel hydroxy- and aminobisphosphonates with hydroxyapatite

Autor: Luís F. Duarte, Fátima C. Teixeira, Rui Fausto

Publikováno v: ARKIVOC, Vol 2010, Iss 5, Pp 117-127 (2009)

Externí odkaz: https://doaj.org/article/01dd2465c8934940895cbce3fa56d441

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Chemical stability of new nafion membranes doped with bisphosphonic acids under Fenton oxidative conditions

Autor: Fátima C. Teixeira, António P.S. Teixeira, C.M. Rangel

Publikováno v: International Journal of Hydrogen Energy.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0da2e7794e1f42ec41e7658d28ed24ca
https://doi.org/10.1016/j.ijhydene.2023.04.063

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New proton conductive membranes of indazole- and condensed pyrazolebisphosphonic acid-Nafion membranes for PEMFC

Autor: Fátima C. Teixeira, António P.S. Teixeira, C.M. Rangel

In this work, new doped Nafion membranes for PEMFC are prepared by casting with 1 wt% loading of the prepared indazole- and condensed pyrazolebisphosphonic acids (AzBPs). The new membranes were analysed by ATR-FTIR spectroscopy and their morphology w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27b7009eff91bce85a3fb5b74836e28b
https://hdl.handle.net/10400.9/3923

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New C-3 Substituted 1H- and 2H-Indazolephosphonic Acid Regioisomers: Synthesis, Spectroscopic Characterization and X-Ray Diffraction Studies

Autor: M. João M. Curto, Fátima C. Teixeira, Inês Antunes, M. Teresa Duarte, António P. S. Teixeira, Vânia André

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Indazole is known as an important structural motif in medicinal chemistry and, recently, has also gained attention in other areas, such as materials chemistry, with many studies showing different potential applications for their regioisomers. Phospho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e75060fc4fe3e17c7d0b2aae2b94687d

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New modified Nafion-bisphosphonic acid composite membranes for enhanced proton conductivity and PEMFC performance

Autor: Ana I. de Sá, Inmaculada Ortiz, Víctor Manuel Ortiz-Martínez, Alfredo Ortiz, António P. S. Teixeira, Fátima C. Teixeira, Carmen M. Rangel

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação

Proton exchange membranes remain a crucial material and a key challenge to fuel cell science and technology. In this work, new Nafion membranes are prepared by a casting method using aryl- or azaheteroaromatic bisphosphonate compounds as dopants. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa6950aa247bb1d6b1d4ae4c210b3c63

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Synthesis of novel pyrazolo[3,4-b]quinoline-bisphosphonic acids and an unexpected intramolecular cyclization and phosphonylation reaction

Autor: M. João M. Curto, Fátima C. Teixeira, Carla Lucas, M. Teresa Duarte, Vânia André, António P. S. Teixeira

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Novel pyrazolo[3,4-b]quinoline alpha-ketophosphonic and hydroxymethylenebisphosphonic acid compounds were synthesized using different methodologies, starting from 2-chloro-3-formylquinoline 1. New phosphonic acid compounds were obtained as N-1 deriva

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7470d1b7e2a4e3a1c7d1b2eb37452828

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Enhanced proton conductivity of Nafion-azolebisphosphonate membranes for PEM fuel cells

Autor: Fátima C. Teixeira, Carmen M. Rangel, Ana I. de Sá, António P. S. Teixeira

Fuel cells are among the cleaner alternatives of sustainable energy technologies, where their proton exchange membranes continue to be a key component with many challenges and opportunities ahead. In this study, different indazole- and benzotriazoleb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20b332936d867af603981a6bca951fea
https://hdl.handle.net/10400.9/3199

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Asymmetric synthesis of secondary benzylic alcohols via arene chromium tricarbonyl complexes

Autor: M. Rute G. da Costa, M. João M. Curto, James E. Thomson, Stephen G. Davies, Fátima C. Teixeira

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

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Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c15dc8206ff7a7552093a11e4f2b041c
http://ora.ox.ac.uk/objects/uuid:

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Nafion® phosphonic acid composite membranes for proton exchange membranes fuel cells

Autor: Ana I. de Sá, Carmen M. Rangel, Fátima C. Teixeira, António P. S. Teixeira

Publikováno v: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)

The fuel cells are electrochemical devices that convert the chemical energy stored in a fuel, directly and efficiently into electrical energy. Among the fuel cells, the proton exchange membrane fuel cells (PEMFCs) are considered promising power sourc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88afa6bff7b3e039b750e04558030331
https://hdl.handle.net/10400.9/3120

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