Tipo
Artigos em Conferência
Tipo de Documento
Resumo
Título
New Working Mixtures for Absorption Refrigeration: A Thermophysical Insight Through the Water+Choline Acetate Mixture
Participantes na publicação
Xavier Paredes (Author)
Dep. Química e Bioquímica
Carla S.G.P. Queirós (Author)
Dep. Química e Bioquímica
CQE
Ana F. Cristino (Author)
Dep. Química e Bioquímica
CQE
Luis C.S. Nobre (Author)
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Carlos A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE
Fernando J.V. Santos (Author)
Dep. Química e Bioquímica
CQE
Resumo
Ionic liquids have been widely studied due to their unique properties (for example low flammability, negligible vapor pressure, high chemical and thermal stabilities, easy recycling) and potential applicability in a wide range of applications such as heat transport and storage, fuel processing production, pharmaceutical research, and many other fields [1]. The most common ionic liquids (imidazolium and pyridinium based) present high toxicity and nonbiodegradability [2] while choline based ILs can be a less toxic and biodegradable alternative to common ILs [3,4].\nPure choline acetate is solid below 70 °C, making it difficult to measure some of its thermophysical properties. Only a few studies of its thermophysical properties for very dilute mixtures of choline acetate and water could be found. In this work, new accurate thermophysical properties of the binary system water and choline acetate [Cho][OAc] with an assay ≥ 98%, will be presented and its suitability as a working mixture for absorption refrigeration will be discussed.\n\nREFERENCES\n\n[1] Kar, M., Plechkova, N.V., Seddon, K.R., Pringle, J.M., MacFarlane, D.R. Ionic Liquids – Further Progress on the Fundamental Issues. Aust. J. Chem., 72 (2019) 3-10. https://doi.org/10.1071/CH18541 \n[2] Coleman, D., Gathergood, N. Biodegradation studies of ionic liquids. Chem. Soc. Rev., 39 (2010) 600-637. https://doi.org/10.1039/B817717C \n[3] Costa, S.P.F., Pinto, P.C.A.G., Lapa, R.A.S., Saraiva, M.L.M.F.S. Toxicity assessment of ionic liquids with Vibrio fischeri: An alternative fully automated methodology. J. Hazar. Mater., 284 (2015), 136–142. https://doi.org/10.1016/j.jhazmat.2014.10.049 \n[4] Sakamoto, M., Ohama, Y., Aoki, S., Fukushi, K., Mori, T., Yoshimura, Y., Shimizu, A. Effect of Ionic Liquids on the Hatching of Artemia salina Cysts. Aust. J. Chem., 71 (2018), 492. https://doi.org/10.1071/CH18117 \n
Editor
Institute of Chemical Engineering Sciences
Data de Publicação
2022-05-26
Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Evento
28th EUCHEM Conference on Molten Salts and Ionic Liquids
Identificadores da Publicação
Local
Patras, Greece
Organizadores
Institute for Solid State Chemistry of Bordeaux