Tipo
Artigos em Conferência
Tipo de Documento
Resumo
Título
Understanding the Thermal Conductivity of Ionic Liquids: A Direction to Select New Heat Transfer Fluids
Participantes na publicação
Rafael M. Almeida (Author)
Dep. Química e Bioquímica
CQE
Maria José V. Lourenço (Author)
Dep. Química e Bioquímica
CQE
Carlos A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE
Resumo
Ionic liquids (ILs) are salts in the liquid state at room temperature with some relevant properties, namely their low vapor pressure over a large temperature range, making them possible candidates for heat transfer applications. Among all known ILs, the ones with imidazolium-based cations are the most studied, given their safety, low cost, low viscosity, non-toxicity, and biodegradability. [1,2]\nILs are considered sustainable novel solvents in chemical technology. As such, there is a need to fully understand their properties. This work reports the thermal conductivity of the binary system water and 1-ethyl-3-methylimidazolium dicyanamide for all the composition ranges and the influence of the imidazolium-based cation’s alkyl chain and different anions on this thermophysical property [3,4]. The thermal conductivity was measured with a transient hot-wire probe, in the temperature range 303.15 K < T < 348.15 K, un an estimated expanded uncertainty Ur (λ) = 0.02. [5]\n\nReferences: [1] D. MacFarlane, M. Kar, J. Pringle; Wiley-VCH Verlag GmbH & Co. KGaA 2017, 1-25. [2] J. França, C. A. Nieto de Castro, V. M. B. Nunes, M. L. S. Matos Lopes; J. Chem. Eng. Data 2009, 54, 2569-2575. [3] F. E. B. Bioucas, S. I. C. Vieira, M. J. V. Lourenço, F. J. V. Santos, M. L. M. Lopes, C. A. Nieto de Castro, K. Massone, Ind. Eng. Chem. Res. 2018, 57, 8541-8551. [4] C. A. Nieto de Castro, A. Lamas, C. Magendran, R. Silva, R. M. Almeida, X. Paredes, Â. F. Santos, I. M. S. Lampreia, F. J. V. Santos, M. J. V. Lourenço; J. Chem. Eng. Data 2023, to be submitted. [5] D. Lozano-Martin, S. I. C. Vieira, X. Paredes, M. J. V. Lourenço, C. A. Nieto de Castro, J. V. Sengers, K. Massone; Molecules 2020, 25, 4290.
Editor
CQE
Data de Publicação
2023-05-25
Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Evento
CQE DAYS, Academia de Ciências de Lisboa, Portugal, May 25-26, 2023
Identificadores da Publicação
Local
Lisboa, Portugal
Organizadores
CQE