Investigation of ionic liquids based on diphenyl phosphate

I&EC 47

Marie Thomas1, Sharon I. Lall-Ramnarine, slallramnarine@qcc.cuny.edu2, James F. Wishart, wishart@bnl.gov3, and Robert Engel, robert_engel@qc.edu1. (1) Department of Chemistry and Biochemistry, Queens College and the Graduate Center, CUNY, 65-30 Kissena Boulevard, Flushing, NY 11367, (2) Department of Chemistry, Queensborough Community College, CUNY, 222-05 56th Avenue, Bayside, NY 11364, (3) Chemistry Department, Brookhaven National Laboratory, Upton, NY 11973
Ionic liquids are salts that have melting points below 100 °C and in general exhibit little vapor pressure, are non-flammable, thermally stable and can exhibit high conductivities. We have developed a new series of ionic liquids based on the diphenyl phosphate anion. The goal of this study was to develop ionic liquids which are more hydrophobic, than those ionic liquids we have previously developed and continue to investigate, based on the phosphate anion. Cation types include those based on 1-methyl imidazole, 1-methylpyrrolidine, 4-dimethylaminopyridine (DMAP) and pyridine. Preliminary results indicate that in comparison to phosphate ionic liquids, these salts have lower melting points and are not as hydrophilic. We report here on the synthesis and physical properties of these new materials. This work was supported in part at BNL by the U. S. DOE Office of Basic Energy Sciences under contract # DE-AC02-98CH10886.
 

IEC Poster Session
8:00 PM-10:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster

Sci-Mix
8:00 PM-10:00 PM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Sci-Mix

Division of Industrial & Engineering Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007