Tipo
Artigos em Conferência
Tipo de Documento
Resumo
Título
Choline Acetate as a potential substitute for Lithium Bromide
Participantes na publicação
Carla S.G.P. Queirós (Author)
Dep. Química e Bioquímica
CQE
Ana F. Cristino (Author)
Dep. Química e Bioquímica
CQE
Xavier Paredes (Author)
Dep. Química e Bioquímica
Carlos 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 ºC, 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.\nReferences\n[1] M. Kar, N.V. Plechkova, K.R. Seddon, J.M. Pringle, D.R. MacFarlane, Aust. J. Chem. 72 (2019) 3-10. https://doi.org/10.1071/CH18541.\n[2] . D. Coleman, N. Gathergood, Chemical Society Reviews, 39 (2010) 600-637.\n[3] S. P. F. Costa, P. C. A. G. Pinto, R. A. S. Lapa, M. L. M. F. S. Saraiva, Journal of Hazardous Materials, 284 (2015), 136–142.\n[4] M. Sakamoto, Y. Ohama, S. Aoki, K. Fukushi, T. Mori, Y. Yoshimura, A. Shimizu, Australian Journal of Chemistry, 71 (2018), 492.
Editor
CQE
Data de Publicação
2021-05-27
Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Evento
CQE Days 2021
Identificadores da Publicação
Local
online (COVID19)
Organizadores
CQE
Coleção
Book of Abstarcts
Número de Páginas
1
Página Inicial
29