Physicochemical properties and toxicities of hydrophobicpiperidinium and pyrrolidinium ionic liquids

Journal Article · Mon Jun 25 00:00:00 EDT 2007 · Fluid Phase Equilibria

OSTI ID:922730

Salminen, Justin; Papaiconomou, Nicolas; Kumar, R Anand; Lee, Jong-Min; Kerr, John; Newman, John; Prausnitz, John M

Some properties are reported for hydrophobic ionic liquids (IL) containing 1-methyl-1-propyl pyrrolidinium [MPPyrro]{sup +}, 1-methyl-1-butyl pyrrolidinium [MBPyrro]{sup +}, 1-methyl-1-propyl piperidinium [MPPip]{sup +}, 1-methyl-1-butyl piperidinium [MBPip]{sup +}, 1-methyl-1-octylpyrrolidinium [MOPyrro]{sup +} and 1-methyl-1-octylpiperidinium [MOPip]{sup +} cations. These liquids provide new alternatives to pyridinium and imidazolium ILs. High thermal stability of an ionic liquid increases safety in applications like rechargeable lithium-ion batteries and other electrochemical devices. Thermal properties, ionic conductivities, viscosities, and mutual solubilities with water are reported. In addition, toxicities of selected ionic liquids have been measured using a human cancer cell-line. The ILs studied here are sparingly soluble in water but hygroscopic. We show some structure-property relationships that may help to design green solvents for specific applications. While ionic liquids are claimed to be environmentally-benign solvents, as yet few data have been published to support these claims.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 922730
• Report Number(s): LBNL-62930; FPEQDT; R&D Project: 365739; BnR: YN0100000; TRN: US200804%%1224
• Journal Information: Fluid Phase Equilibria, Vol. 261, Issue 1-2 SI; Related Information: Journal Publication Date: 12/01/2007; ISSN 0378-3812
• Country of Publication: United States
• Language: English

Related Subjects

37
CATIONS
DESIGN
NEOPLASMS
SAFETY
SOLVENTS
STABILITY
THERMODYNAMIC PROPERTIES
WATER