Document type
Conference papers
Document subtype
Abstract
Title
Ionic Liquid + Water Mixtures: Key to Sustainable Heat Transfer and Storage Engineering Fluids?
Participants in the publication
Carlos A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE
Summary
Chemical process design needs, for the sake of quality of investment, operation and safety, accurate values of the thermophysical (and toxicological) properties of liquids. Ionic liquids as possible replacements of currently chemicals for which European and International agencies have mandatory requirements, in actual and future chemical processes, generate a plethora of mixtures, that need an effort to devise reliable prediction and estimation methods, in the impossibility of measuring all properties of all systems known [1,2].\nWater, as the main chemical engineering fluid, is a natural choice, but its use alone is not sufficient. In our laboratory a systematic study of the properties of [C2mim][X] ionic liquids mixtures with water, by measuring properties that can give a molecular insight on the structure of the mixtures, combined with molecular simulation and spectroscopic information.\nIt is the purpose of this contribution to report our findings, for ionic liquids where X = CH3COO-, CH3SO3-and N(CN)2-, for properties like density, speed of sound, viscosity, electric conductivity, thermal conductivity, infinite dilution diffusion coefficients and refraction index [3-5] and discuss the possible structure of their aqueous systems, in all range of compositions, enhancing the insights that can be taken for general utilization of this mixtures as sustainable heat transfer and storage liquids for industrial applications.\n[1] J.M.P. França, C.A. Nieto de Castro, V.M.B. Nunes, M.L.S. Matos Lopes. The Influence of Thermophysical Properties of Ionic Liquids in Chemical Process Design. J. Chem. Eng. Data 2009, 54, 2569–2575. DOI: https://doi.org/10.1021/je900107t\n[2] Xavier Paredes, Maria José V. Lourenço, Carlos A. Nieto de Castro, W.A. Wakeham. Thermal Conductivity of Ionic Liquids and IoNanofluids. Can Molecular Theory Help?. Special Issue Thermophysical Properties of Nanofluids – From Measurement to Interpretation, Section: Thermodynamics, Fluids, (2021), 6, 116 (28 pages). DOI: https://doi.org/10.3390/fluids6030116 \n[3] C.S.G.P. Queirós, X. Paredes, T.F.S. Avelino, D.E.N. Bastos, M. Ferreira, F.J.V. Santos, A.F. Santos, M.L.M. Lopes, M.J.V. Lourenço, H. Pereira and C.A. Nieto de Castro. The Influence of Water on the Thermophysical Properties of 1-Ethyl-3-methylimidazolium Acetate. J. Mol. Liq., 2020, 297, 111925. DOI: https://doi.org/10.1016/j.molliq.2019.111925 \n[4] F.E.B. Bioucas, C.S.G.P. Queirós, D. Lozano-Martín, M. Ferreira, X. Paredes, A.F. Santos, F.J.V. Santos, M.L.M. Lopes, M. I. Lampreia, M.J.V. Lourenço, C. A. Nieto de Castro and K. Massonne. [C2mim][CH3SO3] – A Suitable New Heat Transfer Fluid? Part 2. Thermophysical Properties of Its Mixtures with Water. Ind. Eng. Chem. Res., 2022, 61, (5), 2280–2305. DOI: https://doi.org/10.1021/acs.iecr.1c02970 \n[5] Carlos A. Nieto de Castro, Angela Lamas, Cagenna Magendran, Ramalianes Silva, Rafael M. Almeida, Xavier Paredes, Ângela F. Santos, Fernando J.V. Santos, Maria José V. Lourenço, Teofilo A. Graber. Thermophysical Properties of 1-Ethyl-3-methylimidazolium Dicyanamide, their mixture with water and IoNanofluid with Titanium Oxide. J. Chem. Eng. Data, 2023 (to be submitted).\n
Editor(s)
University Rovira i Virgili, Khalifa University
Date of Publication
2023-05-21
Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Event
16th International Conference on Properties and Phase Equilibria For Product And Process Design, PPEPPD2023, Tarragona, Spain, May 21-25, 2023
Publication Identifiers
ISBN - 9788409514014
Address
La Pineda, Tarragona, Spain
Organizers
University Rovira i Virgili, Khalifa University, Texas A&M Qatar
Publisher
University Rovira i Virgili, Khalifa University
Keywords
Ionic liquids
water
mixtures
thermophysical properties
structure