Liquid-liquid extraction of toluene from n-heptane using binary mixtures of N-butylpyridinium tetrafluoroborate and N-butylpyridinium bis(trifluoromethylsulfonyl)imide ionic liquids

1. García, S.
2. Larriba, M.
3. García, J.
4. Torrecilla, J.S.
5. Rodríguez, F.