Solvation of inorganic nitrate salts in protic ionic liquids

Robert Hayes; Stephen A. Bernard; Silvia Imberti; Gregory G. Warr; Rob Atkin

doi:10.1021/jp506192d

Solvation of inorganic nitrate salts in protic ionic liquids

Robert Hayes, Stephen A. Bernard, Silvia Imberti, Gregory G. Warr, Rob Atkin

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

47 Scopus citations

Abstract

The bulk nanostructure of several inorganic salt solutions in protic ionic liquids is elucidated using neutron diffraction and empirical potential structure refinement modeling. The protic ionic liquids studied are ethylammonium nitrate (EAN) and ethanolammonium nitrate (EtAN), which are mixed with either LiNO₃, Mg(NO₃)₂, Ca(NO₃)₂, or Al(NO₃)₃ at 1:10 or 1:30 solute:solvent mol:mol ratios. The models show inorganic metal ions are solvated within the polar domains of the nanostructure and can induce significant differences in bulk solvent nanostructure from that of the pure ionic liquids. For EtAN, the uncharged groups aggregate and form an apolar domain in spite of the cations reduced amphiphilicity because the trans rotamer is favored when an inorganic salt is added.

Original language	English (US)
Pages (from-to)	21215-21225
Number of pages	11
Journal	Journal of Physical Chemistry C
Volume	118
Issue number	36
DOIs	https://doi.org/10.1021/jp506192d
State	Published - Sep 11 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Solvation of inorganic nitrate salts in protic ionic liquids",

abstract = "The bulk nanostructure of several inorganic salt solutions in protic ionic liquids is elucidated using neutron diffraction and empirical potential structure refinement modeling. The protic ionic liquids studied are ethylammonium nitrate (EAN) and ethanolammonium nitrate (EtAN), which are mixed with either LiNO3, Mg(NO3)2, Ca(NO3)2, or Al(NO3)3 at 1:10 or 1:30 solute:solvent mol:mol ratios. The models show inorganic metal ions are solvated within the polar domains of the nanostructure and can induce significant differences in bulk solvent nanostructure from that of the pure ionic liquids. For EtAN, the uncharged groups aggregate and form an apolar domain in spite of the cations reduced amphiphilicity because the trans rotamer is favored when an inorganic salt is added.",

author = "Robert Hayes and Bernard, \{Stephen A.\} and Silvia Imberti and Warr, \{Gregory G.\} and Rob Atkin",

note = "Publisher Copyright: {\textcopyright} 2014 American Chemical Society.",

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doi = "10.1021/jp506192d",

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TY - JOUR

T1 - Solvation of inorganic nitrate salts in protic ionic liquids

AU - Hayes, Robert

AU - Bernard, Stephen A.

AU - Imberti, Silvia

AU - Warr, Gregory G.

AU - Atkin, Rob

PY - 2014/9/11

Y1 - 2014/9/11

N2 - The bulk nanostructure of several inorganic salt solutions in protic ionic liquids is elucidated using neutron diffraction and empirical potential structure refinement modeling. The protic ionic liquids studied are ethylammonium nitrate (EAN) and ethanolammonium nitrate (EtAN), which are mixed with either LiNO3, Mg(NO3)2, Ca(NO3)2, or Al(NO3)3 at 1:10 or 1:30 solute:solvent mol:mol ratios. The models show inorganic metal ions are solvated within the polar domains of the nanostructure and can induce significant differences in bulk solvent nanostructure from that of the pure ionic liquids. For EtAN, the uncharged groups aggregate and form an apolar domain in spite of the cations reduced amphiphilicity because the trans rotamer is favored when an inorganic salt is added.

AB - The bulk nanostructure of several inorganic salt solutions in protic ionic liquids is elucidated using neutron diffraction and empirical potential structure refinement modeling. The protic ionic liquids studied are ethylammonium nitrate (EAN) and ethanolammonium nitrate (EtAN), which are mixed with either LiNO3, Mg(NO3)2, Ca(NO3)2, or Al(NO3)3 at 1:10 or 1:30 solute:solvent mol:mol ratios. The models show inorganic metal ions are solvated within the polar domains of the nanostructure and can induce significant differences in bulk solvent nanostructure from that of the pure ionic liquids. For EtAN, the uncharged groups aggregate and form an apolar domain in spite of the cations reduced amphiphilicity because the trans rotamer is favored when an inorganic salt is added.

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Solvation of inorganic nitrate salts in protic ionic liquids

Abstract

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