Criticality of the [C4mim] [BF4] + Water system

C. A. Cerdeiriña; J. Troncoso; C. Paz Ramos; L. Romani; V. Najdanovic-Visak; H. J. R. Guedes; J. M. S. S. Esperança; Z. P. Visak; M. Nunes da  Ponte; L. P. N. Rebelo

Criticality of the [C₄mim] [BF₄] + Water system

C. A. Cerdeiriña, J. Troncoso, C. Paz Ramos, L. Romani, V. Najdanovic-Visak, H. J. R. Guedes, J. M. S. S. Esperança, Z. P. Visak, M. Nunes da Ponte, L. P. N. Rebelo

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

18 Citations (Scopus)

Abstract

A study of the behavior of the response functions of the [C₄mim] [BF₄] + water ionic binary solution near its liquid-liquid critical point at atmospheric pressure is presented. Phase equililibrium temperatures, which allow to obtain the critical coordinates of this system, are determined. Measurements of the isobaric heat capacity per unit volume in the critical region indicate Ising-like behavior. The slope of the critical line, (dT/dp)_c, is estimated by means of Prigogine and Defay's equation using experimentally determined excess volumes and excess enthalpies as a function of temperature. (dT/dp)_c is found to be near zero. The consequences of this fact for the global critical behavior of second-order volumetric derivatives are discussed.

Original language	English
Title of host publication	Ionic Liquids IIIA: Fundamentals, Progress, Challenges and Opportunities - Properties and Structure
Publisher	American Chemical Society (ACS)
Pages	175-186
Number of pages	12
Volume	901
ISBN (Print)	9780841238930
Publication status	Published - 1 Dec 2005

Publication series

Name	ACS Symposium Series
Publisher	American Chemical Society (ACS)
Volume	901
ISSN (Print)	0097-6156

Keywords

Binary mixtures
Ionic liquids
Coexistence curves

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Cerdeiriña, C. A., Troncoso, J., Ramos, C. P., Romani, L., Najdanovic-Visak, V., Guedes, H. J. R., Esperança, J. M. S. S., Visak, Z. P., Ponte, M. N. D., & Rebelo, L. P. N. (2005). Criticality of the [C₄mim] [BF₄] + Water system. In Ionic Liquids IIIA: Fundamentals, Progress, Challenges and Opportunities - Properties and Structure (Vol. 901, pp. 175-186). (ACS Symposium Series; Vol. 901). American Chemical Society (ACS).

Cerdeiriña, C. A. ; Troncoso, J. ; Ramos, C. Paz ; Romani, L. ; Najdanovic-Visak, V. ; Guedes, H. J. R. ; Esperança, J. M. S. S. ; Visak, Z. P. ; Ponte, M. Nunes da ; Rebelo, L. P. N. / Criticality of the [C₄mim] [BF₄] + Water system. Ionic Liquids IIIA: Fundamentals, Progress, Challenges and Opportunities - Properties and Structure. Vol. 901 American Chemical Society (ACS), 2005. pp. 175-186 (ACS Symposium Series).

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title = "Criticality of the [C4mim] [BF4] + Water system",

abstract = "A study of the behavior of the response functions of the [C4mim] [BF4] + water ionic binary solution near its liquid-liquid critical point at atmospheric pressure is presented. Phase equililibrium temperatures, which allow to obtain the critical coordinates of this system, are determined. Measurements of the isobaric heat capacity per unit volume in the critical region indicate Ising-like behavior. The slope of the critical line, (dT/dp)c, is estimated by means of Prigogine and Defay's equation using experimentally determined excess volumes and excess enthalpies as a function of temperature. (dT/dp)c is found to be near zero. The consequences of this fact for the global critical behavior of second-order volumetric derivatives are discussed.",

keywords = "Binary mixtures, Ionic liquids, Coexistence curves",

author = "Cerdeiri{\~n}a, {C. A.} and J. Troncoso and Ramos, {C. Paz} and L. Romani and V. Najdanovic-Visak and Guedes, {H. J. R.} and Esperan{\c c}a, {J. M. S. S.} and Visak, {Z. P.} and Ponte, {M. Nunes da} and Rebelo, {L. P. N.}",

year = "2005",

month = dec,

day = "1",

language = "English",

isbn = "9780841238930",

volume = "901",

series = "ACS Symposium Series",

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pages = "175--186",

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Cerdeiriña, CA, Troncoso, J, Ramos, CP, Romani, L, Najdanovic-Visak, V , Guedes, HJR , Esperança, JMSS , Visak, ZP , Ponte, MND & Rebelo, LPN 2005, Criticality of the [C₄mim] [BF₄] + Water system. in Ionic Liquids IIIA: Fundamentals, Progress, Challenges and Opportunities - Properties and Structure. vol. 901, ACS Symposium Series, vol. 901, American Chemical Society (ACS), pp. 175-186.

Criticality of the [C₄mim] [BF₄] + Water system. / Cerdeiriña, C. A.; Troncoso, J.; Ramos, C. Paz; Romani, L.; Najdanovic-Visak, V.; Guedes, H. J. R.; Esperança, J. M. S. S.; Visak, Z. P.; Ponte, M. Nunes da ; Rebelo, L. P. N.

Ionic Liquids IIIA: Fundamentals, Progress, Challenges and Opportunities - Properties and Structure. Vol. 901 American Chemical Society (ACS), 2005. p. 175-186 (ACS Symposium Series; Vol. 901).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Criticality of the [C4mim] [BF4] + Water system

AU - Cerdeiriña, C. A.

AU - Troncoso, J.

AU - Ramos, C. Paz

AU - Romani, L.

AU - Najdanovic-Visak, V.

AU - Guedes, H. J. R.

AU - Esperança, J. M. S. S.

AU - Visak, Z. P.

AU - Ponte, M. Nunes da

AU - Rebelo, L. P. N.

PY - 2005/12/1

Y1 - 2005/12/1

N2 - A study of the behavior of the response functions of the [C4mim] [BF4] + water ionic binary solution near its liquid-liquid critical point at atmospheric pressure is presented. Phase equililibrium temperatures, which allow to obtain the critical coordinates of this system, are determined. Measurements of the isobaric heat capacity per unit volume in the critical region indicate Ising-like behavior. The slope of the critical line, (dT/dp)c, is estimated by means of Prigogine and Defay's equation using experimentally determined excess volumes and excess enthalpies as a function of temperature. (dT/dp)c is found to be near zero. The consequences of this fact for the global critical behavior of second-order volumetric derivatives are discussed.

AB - A study of the behavior of the response functions of the [C4mim] [BF4] + water ionic binary solution near its liquid-liquid critical point at atmospheric pressure is presented. Phase equililibrium temperatures, which allow to obtain the critical coordinates of this system, are determined. Measurements of the isobaric heat capacity per unit volume in the critical region indicate Ising-like behavior. The slope of the critical line, (dT/dp)c, is estimated by means of Prigogine and Defay's equation using experimentally determined excess volumes and excess enthalpies as a function of temperature. (dT/dp)c is found to be near zero. The consequences of this fact for the global critical behavior of second-order volumetric derivatives are discussed.

KW - Binary mixtures

KW - Ionic liquids

KW - Coexistence curves

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AN - SCOPUS:34249944919

SN - 9780841238930

VL - 901

T3 - ACS Symposium Series

SP - 175

EP - 186

BT - Ionic Liquids IIIA: Fundamentals, Progress, Challenges and Opportunities - Properties and Structure

PB - American Chemical Society (ACS)

ER -