Liquid-Liquid Equilibrium in Ternary Systems containing Ammonium-Based Ionic Liquids, including their Synthesis and Purification

• Grant number: 11/19736-1
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: March 01, 2012
• End date: September 30, 2015
• Field of knowledge: Engineering - Chemical Engineering - Industrial Operations and Equipment for Chemical Engineering
• Principal Investigator: Roberta Ceriani
• Grantee: Rafaela Rocha Pinto
• Host Institution: Faculdade de Engenharia Química (FEQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

The commercial utilization of ionic liquids is of increasing importance, mainly due their termpohysical properties, such as their low vapor pressure, which make these compounds environmentally benign when compared with traditional solvents. For this reason, this kind of solvents has received special attention by process development researchers. Ionic liquids are composed of large organic cations and relatively small anions; that allows the fine tuning of their properties by a careful selection of these cations and anions. These properties make ionic liquids adequate solvents, able to replace most of the traditional organic solvents used by chemical industries. Liquid-liquid equilibrium data (LLE) for multicomponent systems including ionic liquids, although essential for the design and operation of separation processes, are still scarce. This project has as objective the synthesis of ammonium-based ionic liquids, from monoethanolamine and organic acids (butanoic, pentanoic and hexanoic), by using a technique described by Álvarez et al. (2010). From the three obtained ionic liquids, 2-hydroxy ethylammonium butanoate, 2-hydroxy ethylammonium pentanoate, and 2-hydroxy ethylammonium hexanoate, ternary systems composed of water + ionic liquid + organic solvent will be studied for the determination of liquid-liquid equilibrium data. The organic solvents studied include esters and aliphatic hydrocarbons. The thermodynamic models NRTL and ASOG will be used to correlate and predict the obtained data.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DALMOLIN, IREDE; PINTO, RAFAELA R.; DE OLIVEIRA, LEONARDO H.; FOLLEGATTI-ROMERO, LUIS A.; COSTA, ALINE C.; AZNAR, MARTIN. Liquid-liquid equilibrium in systems used for the production of 5-hydroxymethylfurfural from biomass using alcohols as solvents. JOURNAL OF CHEMICAL THERMODYNAMICS, v. 111, p. 80-87, AUG 2017. (11/19736-1, 16/05950-5, 13/14118-3)

R. ROCHA PINTO; D. SANTOS; S. MATTEDI; M AZNAR. DENSITY, REFRACTIVE INDEX, APPARENT VOLUMES AND EXCESS MOLAR VOLUMES OF FOUR PROTIC IONIC LIQUIDS + WATER AT T=298.15 AND 323.15 K. Brazilian Journal of Chemical Engineering, v. 32, n. 3, p. 671-682, 2015-09-00. (11/19736-1)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

PINTO, Rafaela Rocha. Ternary liquid-liquid equilibrium involving Ionic Liquids based in ammonium, including their synthesis and purification. 2016. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Química Campinas, SP.