Kroon, M.C.

Rodriguez, N.

Santacruz Molina, B.

English

Rodriguez Rodriguez, N Nerea

Santacruz Molina, B

Kroon, MC

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Low transition temperature mixtures as extractants in liquid-liquid extraction

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 Low transition temperature mixtures as extractants in liquid-liquid extractionCitation for published version (APA):Rodriguez, N., Santacruz Molina, B., & Kroon, M. C. (2014). Low transition temperature mixtures as extractantsin liquid-liquid extraction. In M. Kroon, C. Peters, & T. Vlugt (Eds.), 27th European Symposium on AppliedThermodynamics(ESAT2014), 6-9 July 2014, Eindhoven, The NetherlandsDocument status and date:Published: 01/01/2014Document Version:Accepted manuscript including changes made at the peer-review stagePlease check the document version of this publication:• A submitted manuscript is the version of the article upon submission and before peer-review. There can beimportant differences between the submitted version and the official published version of record. Peopleinterested in the research are advised to contact the author for the final version of the publication, or visit theDOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and pagenumbers.Link to publicationGeneral rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright ownersand it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.            • Users may download and print one copy of any publication from the public portal for the purpose of private study or research.            • You may not further distribute the material or use it for any profit-making activity or commercial gain            • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license above, pleasefollow below link for the End User Agreement:www.tue.nl/taverneTake down policyIf you believe that this document breaches copyright please contact us at:openaccess@tue.nlproviding details and we will investigate your claim.Download date: 16. Nov. 2023 Low Transition Temperature Mixtures as Extractants in Liquid-liquid Extraction  Nerea R. Rodriguez1, Blanca Santacruz1, Maaike C. Kroon1 1Separation Technology Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, 5600 MB Eindhoven, The Netherlands   Keywords: Liquid-liquid extraction, low transition temperature mixtures, azeotropic mixtures. Corresponding Author: Nerea R. Rodriguez; N.Rodriguez@tue.nl  Abstract The separation of azeotropic mixtures is a well-known challenge in the separation technology field. Azeotropic/extractive distillation and liquid-liquid extraction are the main options to separate this type of mixtures. Polar organic solvents have traditionally been used as extraction agents in liquid-liquid extraction. However, these solvents are generally volatile, toxic and flammable.  In the last years, ionic liquids (ILs) have successfully been applied in the separation of azeotropic mixtures via liquid-liquid extraction [1]. However, ILs are generally costly, corrosive, toxic and non-biodegradable. Furthermore, most ILs are produced from non-renewable sources. Low transition temperature mixtures (LTTMs) are a new class of ILs analogues that share the promising solvent characteristics of ILs, with additional advantages such as low price and easy synthesis with no purification required [2]. Therefore, LTTMs have recently been used as extraction agents in liquid-liquid extraction, mainly in the separation of aromatic/aliphatic systems [3-5].  In order to investigate the applicability of LTTMs in the separation of azeotropic mixtures, the liquid-liquid equilibrium (LLE) of the ternary system alcohol-aliphatic-LTTM has been measured under various operating conditions. LTTMs composed of natural acids and choline chloride were selected for this work. High distribution coefficients, high selectivities and hardly any solvent losses were achieved.  References [1] A. Pereiro, J. Araújo, J. Esperança, I. Marrucho, and L. Rebelo, “Ionic liquids in separations of azeotropic systems-A review,” The Journal of Chemical Thermodynamics, vol. 46, pp. 2–28, 2012. [2] M. Francisco, A. van den Bruinhorst, and M. C. Kroon, “Low-Transition-Temperature Mixtures (LTTMs): A New Generation of Designer Solvents,” Angewandte Chemie International Edition, 2013. [3] M. A. Kareem, F. S. Mjalli, M. A. Hashim, M. K. Hadj-Kali, F. S. G. Bagh, and I. M. Alnashef, “Phase equilibria of toluene/heptane with tetrabutylphosphonium bromide based deep eutectic solvents for the potential use in the separation of aromatics from naphtha,” Fluid Phase Equilibria, 2012. [4] M. A. Kareem, F. S. Mjalli, M. A. Hashim, and I. M. AlNashef, “Liquid-Liquid Equilibria for the Ternary System (Phosphonium Based Deep Eutectic Solvent-Benzene-Hexane) at Different Temperatures: a new Solvent Introduced,” Fluid Phase Equilibria, 2011. [5] A. S. Gonzalez, M. Francisco, G. Jimeno, S. L. G. de Dios, and M. C. Kroon, “Liquid-liquid equilibrium data for the systems(LTTM+ benzene+ hexane) and (LTTM+ ethyl acetate+ hexane) at different temperatures and atmospheric pressure,” Fluid Phase Equilibria, vol. 360, pp. 54–62, 2013.   

 Low transition temperature mixtures as extractants in liquid-liquid extractionCitation for published version (APA):Rodriguez, N., Santacruz Molina, B., & Kroon, M. C. (2014). Low transition temperature mixtures as extractantsin liquid-liquid extraction. In M. Kroon, C. Peters, & T. Vlugt (Eds.), 27th European Symposium on AppliedThermodynamics(ESAT2014), 6-9 July 2014, Eindhoven, The NetherlandsDocument status and date:Published: 01/01/2014Document Version:Accepted manuscript including changes made at the peer-review stagePlease check the document version of this publication:• A submitted manuscript is the version of the article upon submission and before peer-review. There can beimportant differences between the submitted version and the official published version of record. Peopleinterested in the research are advised to contact the author for the final version of the publication, or visit theDOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and pagenumbers.Link to publicationGeneral rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright ownersand it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.            • Users may download and print one copy of any publication from the public portal for the purpose of private study or research.            • You may not further distribute the material or use it for any profit-making activity or commercial gain            • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license above, pleasefollow below link for the End User Agreement:www.tue.nl/taverneTake down policyIf you believe that this document breaches copyright please contact us at:openaccess@tue.nlproviding details and we will investigate your claim.Download date: 08. Jul. 2024 Low Transition Temperature Mixtures as Extractants in Liquid-liquid Extraction  Nerea R. Rodriguez1, Blanca Santacruz1, Maaike C. Kroon1 1Separation Technology Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, 5600 MB Eindhoven, The Netherlands   Keywords: Liquid-liquid extraction, low transition temperature mixtures, azeotropic mixtures. Corresponding Author: Nerea R. Rodriguez; N.Rodriguez@tue.nl  Abstract The separation of azeotropic mixtures is a well-known challenge in the separation technology field. Azeotropic/extractive distillation and liquid-liquid extraction are the main options to separate this type of mixtures. Polar organic solvents have traditionally been used as extraction agents in liquid-liquid extraction. However, these solvents are generally volatile, toxic and flammable.  In the last years, ionic liquids (ILs) have successfully been applied in the separation of azeotropic mixtures via liquid-liquid extraction [1]. However, ILs are generally costly, corrosive, toxic and non-biodegradable. Furthermore, most ILs are produced from non-renewable sources. Low transition temperature mixtures (LTTMs) are a new class of ILs analogues that share the promising solvent characteristics of ILs, with additional advantages such as low price and easy synthesis with no purification required [2]. Therefore, LTTMs have recently been used as extraction agents in liquid-liquid extraction, mainly in the separation of aromatic/aliphatic systems [3-5].  In order to investigate the applicability of LTTMs in the separation of azeotropic mixtures, the liquid-liquid equilibrium (LLE) of the ternary system alcohol-aliphatic-LTTM has been measured under various operating conditions. LTTMs composed of natural acids and choline chloride were selected for this work. High distribution coefficients, high selectivities and hardly any solvent losses were achieved.  References [1] A. Pereiro, J. Araújo, J. Esperança, I. Marrucho, and L. Rebelo, “Ionic liquids in separations of azeotropic systems-A review,” The Journal of Chemical Thermodynamics, vol. 46, pp. 2–28, 2012. [2] M. Francisco, A. van den Bruinhorst, and M. C. Kroon, “Low-Transition-Temperature Mixtures (LTTMs): A New Generation of Designer Solvents,” Angewandte Chemie International Edition, 2013. [3] M. A. Kareem, F. S. Mjalli, M. A. Hashim, M. K. Hadj-Kali, F. S. G. Bagh, and I. M. Alnashef, “Phase equilibria of toluene/heptane with tetrabutylphosphonium bromide based deep eutectic solvents for the potential use in the separation of aromatics from naphtha,” Fluid Phase Equilibria, 2012. [4] M. A. Kareem, F. S. Mjalli, M. A. Hashim, and I. M. AlNashef, “Liquid-Liquid Equilibria for the Ternary System (Phosphonium Based Deep Eutectic Solvent-Benzene-Hexane) at Different Temperatures: a new Solvent Introduced,” Fluid Phase Equilibria, 2011. [5] A. S. Gonzalez, M. Francisco, G. Jimeno, S. L. G. de Dios, and M. C. Kroon, “Liquid-liquid equilibrium data for the systems(LTTM+ benzene+ hexane) and (LTTM+ ethyl acetate+ hexane) at different temperatures and atmospheric pressure,” Fluid Phase Equilibria, vol. 360, pp. 54–62, 2013.   

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Low transition temperature mixtures as extractants in liquid-liquid extraction

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