The Density, Speed of Sound, Viscosity, and Thermal Conductivity of 1-Dodecyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide and Its Ionanofluid with Graphene

Nieto de Castro, Carlos A.; Lamas, Angela; Paredes, Xavier; Santos, Ângela F.; Lampreia, Isabel M. S.; Vieira dos Santos, Fernando J.; Lourenço, Maria José V.; Graber, Teófilo A.

doi:10.1021/acs.jced.3c00398

Cited by 3 publications

(1 citation statement)

References 36 publications

(87 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is interesting to know that results by Nieto de Castro et al 61 with the IoNanofluid [C 12 mim][(CF 3 SO 2 ) 2 N] + graphene, w np = 0.00053, in about the same temperature range, showed that this IoNanofluid did not produce significant enhancements for viscosity, which is a positive fact for its utilization as an alternative heat transfer fluid. However, it produced a negative or almost zero thermal conductivity enhancement, which invalidates its use for the same application.…”

Section: An Excellentmentioning

confidence: 93%

Possible New Heat Transfer Fluid: The IoNanofluid of 1-Ethyl-3-methylimidazolium Dicyanamide + Nano-Titanium Oxide─Studying Its Thermal Conductivity and Viscosity

de Castro,

Lamas,

Paredes

et al. 2024

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

Ionic liquids with the dicyanamide anion, namely, with 1-alkyl-imidazolium cations, have been receiving attention recently due to their potential applications. The utilization of these liquids as heat transfer fluids, specifically in small heat exchangers and microchannels for microprocessor cooling, is presently deemed highly feasible, as it can be both more efficient and environmentally acceptable. The design of a heat transfer equipment that makes use of fluids requires knowledge of their thermophysical properties. In this regard, dispersions of nanoparticles have been extensively studied in recent years to improve thermal conductivity or obtain desirable optical properties. IoNanofluids is what we have taken to name the result of such dispersions in ionic liquids. In this paper, we report measurements of the thermal conductivity and viscosity of the IoNanofluid of 1-ethyl-3-methylimidazolium dicyanamide, [C 2 mim][N(CN) 2 ], with 0.5% mass fraction of TiO 2 nanoparticles (diameter 20 nm) in the temperature range (293 < T/K < 343), at P = 0.1 MPa. Reasonable enhancements were found for thermal conductivity and viscosity, which were temperature-dependent. The IoNanofluid was found to behave as a non-Newtonian fluid in most of the temperature range studied. A discussion about the possible use of this IoNanofluid as a heat transfer fluid shows that it has very promising properties to be used in heat transfer applications.

show abstract

Section: An Excellentmentioning

confidence: 93%