Síntesis del líquido iónico bmin+HSO 4- mediante una sola etapa, para aplicaciones en hidrometalurgia

Translated title of the contribution: One-step synthesis of bmin+HSO4- ionic liquid for applications in hydrometallurgy

Enrique Cortés, Amelia Dondero, Horacio Aros, Carlos Carlesi

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The ionic liquid (LI) 1-butyl-3-methylimidazolium hydrogen sulphate (bmin + HSO4 -) was synthesized in a stirred batch reactor at 70°C. The products were characterized by means of UV spectrometry, that allowed quantify the conversion of the limiting reagent (1-methyl imidazolium). Additionally, IR and NMR spectroscopy were used to certify the chemical structure of the IL. The optimal synthesis conditions were: 16% molar excess of butyl bromide and an aqueous solution of sulphuric acid 65% W/W added at rate of 1 ml min -1, thus obtaining an 85% yield. The obtained LI, presents light-orange coloration with density 1.3836 g cm -3 and viscosity 340 cp (30°C). The IL sensitized dissolves elemental sulphur (0,05 g sulfur/g LI), important property for use as additive in leaching process of sulphide ores.

Translated title of the contributionOne-step synthesis of bmin+HSO4- ionic liquid for applications in hydrometallurgy
Original languageSpanish
Pages (from-to)67-76
Number of pages10
JournalInformacion Tecnologica
Issue number3
StatePublished - 2010
Externally publishedYes


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