TY - JOUR
T1 - Viscosity of [C4mim][(CF3SO2)2N], [C4mim][N(CN)2], [C2mim][C2H5SO4] and [Aliquat][N(CN)2] in a wide temperature range. Measurement, correlation, and interpretation
AU - Tariq, Mohammad
AU - Esperança, José M. S. S.
AU - Rebelo, Luís P. N.
AU - Paredes, Xavier
AU - Santos, Fernando J. V.
AU - Nieto de Castro, Carlos A.
N1 - Funding Information:
The authors are thankful for financial support from Fundação para a Ciência e a Tecnologia (Project PTDC/EQUFTT/102166/2008). This work was supported by the Associate Laboratory for Green Chemistry - LAQV which is financed by national funds from FCT/MCTES (UIDB/50006/2020 and UIDP/50006/2020) and by Centro de Química Estrutural – CQE, financed by national funds from Fundação para a Ciência e Tecnologia (UIDB/00100/2020 and UIDP/00100/2020).
Funding Information:
The authors are thankful for financial support from Funda??o para a Ci?ncia e a Tecnologia (Project PTDC/EQUFTT/102166/2008). This work was supported by the Associate Laboratory for Green Chemistry - LAQV which is financed by national funds from FCT/MCTES (UIDB/50006/2020 and UIDP/50006/2020) and by Centro de Qu?mica Estrutural ? CQE, financed by national funds from Funda??o para a Ci?ncia e Tecnologia (UIDB/00100/2020 and UIDP/00100/2020). LPNR and CANC were responsible for the conception of the project, first draft and final document. MT and JMMSE performed the experimental measurements and processed raw data, also participating in the draft discussions. XP and FJVS, participated with CANC in data analysis, applying the methodology for water-free data, and literature search for comparisons and discussion.
Publisher Copyright:
© 2021 Elsevier B.V.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/9/1
Y1 - 2021/9/1
N2 - The viscosity of four in-house-made ionic liquids, 1-butyl-3-methyl-imidazolium bis(trifluoromethanesulfonylimide), ([C4mim][(CF3SO2)2N]), CAS RN 174899–83-3, 1-butyl-3-methyl-imidazolium dicyanamide, ([C4mim][N(CN)2]), CAS RN 448245–52-1, 1-ethyl-3-methyl-imidazolium ethylsulphate, ([C2mim][C2H5SO4]), CAS RN 342573–75-5 and methyltrialkyl(C8,C8,C10)ammonium dicyanamide [Aliquat][N(CN)2], CAS RN 63393–96-4, was measured in the temperature range 283.15 K − 373.15 K, at P = 0.1 MPa. Data obtained with an absolute relative uncertainty of Ur (η) = 0.02 was compared with available literature data for all ionic liquids, except for [Aliquat][N(CN)2], data herein presented for the first time. Both the Vogel-Tammann-Fulcher and IUPAC/IAPWS equations were applied to correlate the measured viscosity data as a function of temperature, the latter being more accurate. Values of η (298.15 K) are recommended for each ionic liquid studied. The viscosities of the different ionic liquids are discussed, considering their chemical structure differences.
AB - The viscosity of four in-house-made ionic liquids, 1-butyl-3-methyl-imidazolium bis(trifluoromethanesulfonylimide), ([C4mim][(CF3SO2)2N]), CAS RN 174899–83-3, 1-butyl-3-methyl-imidazolium dicyanamide, ([C4mim][N(CN)2]), CAS RN 448245–52-1, 1-ethyl-3-methyl-imidazolium ethylsulphate, ([C2mim][C2H5SO4]), CAS RN 342573–75-5 and methyltrialkyl(C8,C8,C10)ammonium dicyanamide [Aliquat][N(CN)2], CAS RN 63393–96-4, was measured in the temperature range 283.15 K − 373.15 K, at P = 0.1 MPa. Data obtained with an absolute relative uncertainty of Ur (η) = 0.02 was compared with available literature data for all ionic liquids, except for [Aliquat][N(CN)2], data herein presented for the first time. Both the Vogel-Tammann-Fulcher and IUPAC/IAPWS equations were applied to correlate the measured viscosity data as a function of temperature, the latter being more accurate. Values of η (298.15 K) are recommended for each ionic liquid studied. The viscosities of the different ionic liquids are discussed, considering their chemical structure differences.
KW - 1-Ethyl-3-methyl-imidazolium ethylsulphate
KW - 1-n-Butyl-3-methyl-imidazolium bis(trifluoromethanesulfonylimide)
KW - 1-n-Butyl-3-methyl-imidazolium dicyanamide
KW - Aliquat
KW - Ionic liquids
KW - Methyltrialkyl(C,C,C)ammonium dicyanamide
KW - Viscosity
UR - http://www.scopus.com/inward/record.url?scp=85106909792&partnerID=8YFLogxK
U2 - 10.1016/j.molliq.2021.116482
DO - 10.1016/j.molliq.2021.116482
M3 - Article
AN - SCOPUS:85106909792
SN - 0167-7322
VL - 337
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
M1 - 116482
ER -