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Surface Structures of Binary Mixture of Ionic Liquids.

SYSNO ASEP	0470150
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Surface Structures of Binary Mixture of Ionic Liquids.
Author(s)	Nakajima, K. (JP) Nakanishi, S. (JP) Lísal, Martin (UCHP-M)_{RID, ORCID, SAI} Kimura, K. (JP)
Source Title	Journal of Molecular Liquids. - : Elsevier - ISSN 0167-7322 Roč. 230, MARCH (2017), s. 542-549
Number of pages	8 s.
Language	eng - English
Country	NL - Netherlands
Keywords	ionic liquids ; mixture ; surface structure
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
R&D Projects	GA16-12291S GA ČR - Czech Science Foundation (CSF)
Institutional support	UCHP-M - RVO:67985858
UT WOS	000397690900067
EID SCOPUS	85010661840
DOI	10.1016/j.molliq.2017.01.073
Annotation	Surfaces of 11 equimolar mixtures of ionic liquids (ILs) consisting of 1-alkyl3methylimidazoliumcations (from [C2C1Im] to [C12C1Im])with anions (Cl, [BF4], [TfO], [PF6], [Tf2N])were observed using high-resolution Rutherford backscattering spectroscopy (HRBS). The elemental depth profiles of these IL mixtureswere derived fromthe observed HRBS spectra through spectrum modeling. By comparing the observed depth profiles with those of pure ILs, the surface mole fractions of constituent ILs were estimated. We found a general tendency that larger IL is enriched at the surface. The observed surface enrichment can be reasonablywell reproduced by a simple thermodynamic calculation based on the Sprow-Prausnitz equation. A slight deviation from the calculated resultwas ascribed to the nonideal behavior of the IL mixtures, which was neglected in the calculation.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2017

Number of the records: 1