The nature of ionic liquids in the gas phase

João P. Leal; José M. S. S. Esperança; Manuel E. Minas Da Piedade; José N. Canongia Lopes; Luís P. N. Rebelo; Kenneth R. Seddon

doi:10.1021/jp073006k

The nature of ionic liquids in the gas phase

João P. Leal, José M. S. S. Esperança, Manuel E. Minas Da Piedade, José N. Canongia Lopes, Luís P. N. Rebelo, Kenneth R. Seddon

Research output: Contribution to journal › Article › peer-review

190 Citations (Scopus)

Abstract

Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) experiments showed that when aprotic ionic liquids vaporize under pressure and temperature conditions similar to those of a reduced-pressure distillation, the gas phase is composed of discrete anion-cation pairs. The evolution of the mass spectrometric signals recorded during fractional distillations of binary ionic liquid mixtures allowed us to monitor the changes of the gas-phase composition and the relative volatility of the components. In addition, we have studied a protic ionic liquid, and demonstrated that it exists as separated neutral molecules in the gas phase.

Original language	English
Pages (from-to)	6176-6182
Number of pages	7
Journal	Journal of Physical Chemistry A
Volume	111
Issue number	28
DOIs	https://doi.org/10.1021/jp073006k
Publication status	Published - 19 Jul 2007

Keywords

Ionic liquids
Binary mixtures
Pure ionic

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10.1021/jp073006kLicence: CC BY-NC

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abstract = "Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) experiments showed that when aprotic ionic liquids vaporize under pressure and temperature conditions similar to those of a reduced-pressure distillation, the gas phase is composed of discrete anion-cation pairs. The evolution of the mass spectrometric signals recorded during fractional distillations of binary ionic liquid mixtures allowed us to monitor the changes of the gas-phase composition and the relative volatility of the components. In addition, we have studied a protic ionic liquid, and demonstrated that it exists as separated neutral molecules in the gas phase.",

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AU - Leal, João P.

AU - Esperança, José M. S. S.

AU - Da Piedade, Manuel E. Minas

AU - Lopes, José N. Canongia

AU - Rebelo, Luís P. N.

AU - Seddon, Kenneth R.

N1 - Engineering and Physical Sciences Research Council (EP/D029538/1)

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N2 - Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) experiments showed that when aprotic ionic liquids vaporize under pressure and temperature conditions similar to those of a reduced-pressure distillation, the gas phase is composed of discrete anion-cation pairs. The evolution of the mass spectrometric signals recorded during fractional distillations of binary ionic liquid mixtures allowed us to monitor the changes of the gas-phase composition and the relative volatility of the components. In addition, we have studied a protic ionic liquid, and demonstrated that it exists as separated neutral molecules in the gas phase.

AB - Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) experiments showed that when aprotic ionic liquids vaporize under pressure and temperature conditions similar to those of a reduced-pressure distillation, the gas phase is composed of discrete anion-cation pairs. The evolution of the mass spectrometric signals recorded during fractional distillations of binary ionic liquid mixtures allowed us to monitor the changes of the gas-phase composition and the relative volatility of the components. In addition, we have studied a protic ionic liquid, and demonstrated that it exists as separated neutral molecules in the gas phase.

KW - Ionic liquids

KW - Binary mixtures

KW - Pure ionic

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JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

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The nature of ionic liquids in the gas phase

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Keywords

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