Journal
JOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume 57, Issue 3, Pages 751-755Publisher
AMER CHEMICAL SOC
DOI: 10.1021/je200864h
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Funding
- Japan Science Society
- New Energy and Industrial Technology Development Organization (NEDO) of Japan
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This paper reports the densities, viscosities, and electrical conductivities of the two pyrrolidinium ionic liquids, N-methoxymethyl-N-methylpyrrolidinium bis(fluorosulfonyl)amide ([Pyr(1,1O1)] [FSA]) and N-butyl-N-methylpyrrolidinium bis(fluorosulfonyl)amide ([Pyr(1,4)][FSA]), over the temperature range T = (273.15 to 363.15) K at atmospheric pressure. The densities were fitted to polynominals, and the viscosities and electrical conductivities were analyzed with the Vogel-Fulcher-Tammann and Litovitz equations. The densities and electrical conductivities of [Pyr(1,1O1)][FSA] are higher than those of [Pyr(1,4)] [FSA], while the viscosities of the former salt are smaller than those of the latter. The Walden plots (double logarithm graph of molar conductivity vs fluidity (reciprocal viscosity)) give the straight lines with the slopes being 0.91 to 0.94. The present results for [Pyr(1,1O1)][FSA] and [Pyr1,4][FSA] are compared with those for the bis(trifluoromethanesulfonyl)amide ([NTf2](-)) analogues, [Pyr(1,1O1)][NTf2] and [Pyr(1,4)][NTf2].
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