A neutron scattering and modelling study of aqueous solutions of tetramethylammonium and tetrapropylammonium bromide
Nilsson, Emelie J. LU ; Alfredsson, Viveka LU ; Bowron, Daniel T. and Edler, Karen J. LU
(2016)
In Physical Chemistry Chemical Physics
18(16).
p.11193-11201
- Abstract
We have investigated the properties in water of two tetraalkylammonium bromides (tetramethylammonium, TMA+, and tetrapropylammonium, TPA+), at 0.4 M, using neutron scattering coupled with empirical potential structure refinement to arrive at an atomistic description. Having both a polar and an apolar moiety, it is of interest to determine the strength of each moiety as a function of the alkyl chain length. TMA+ and TPA+, having different impact as structure directors in zeolite synthesis, were chosen for this study. Water arranges tetrahedrally around TMA+ and in an almost featureless manner around TPA+. TMA+ and TPA+ show an apolar hydration with... (More)
We have investigated the properties in water of two tetraalkylammonium bromides (tetramethylammonium, TMA+, and tetrapropylammonium, TPA+), at 0.4 M, using neutron scattering coupled with empirical potential structure refinement to arrive at an atomistic description. Having both a polar and an apolar moiety, it is of interest to determine the strength of each moiety as a function of the alkyl chain length. TMA+ and TPA+, having different impact as structure directors in zeolite synthesis, were chosen for this study. Water arranges tetrahedrally around TMA+ and in an almost featureless manner around TPA+. TMA+ and TPA+ show an apolar hydration with TPA+ being slightly more apolar. TPA+ has a tendency to form small clusters of 2-4 molecules and to fold into a compact configuration. Both molecules correlate similarly with the bromide ion but do not dissociate completely at this concentration.
(Less)
- author
- Nilsson, Emelie J.
LU
; Alfredsson, Viveka
LU
; Bowron, Daniel T.
and Edler, Karen J.
LU
- organization
- publishing date
- 2016-04-28
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Chemistry Chemical Physics
- volume
- 18
- issue
- 16
- pages
- 9 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- pmid:27051995
- wos:000374786300060
- scopus:84967333745
- ISSN
- 1463-9076
- DOI
- 10.1039/c6cp01389a
- language
- English
- LU publication?
- yes
- id
- ef2fa8cf-a605-4832-87b6-9c386b404920
- date added to LUP
- 2016-09-30 10:31:26
- date last changed
- 2024-05-03 10:47:21
@article{ef2fa8cf-a605-4832-87b6-9c386b404920,
abstract = {{<p>We have investigated the properties in water of two tetraalkylammonium bromides (tetramethylammonium, TMA<sup>+</sup>, and tetrapropylammonium, TPA<sup>+</sup>), at 0.4 M, using neutron scattering coupled with empirical potential structure refinement to arrive at an atomistic description. Having both a polar and an apolar moiety, it is of interest to determine the strength of each moiety as a function of the alkyl chain length. TMA<sup>+</sup> and TPA<sup>+</sup>, having different impact as structure directors in zeolite synthesis, were chosen for this study. Water arranges tetrahedrally around TMA<sup>+</sup> and in an almost featureless manner around TPA<sup>+</sup>. TMA<sup>+</sup> and TPA<sup>+</sup> show an apolar hydration with TPA<sup>+</sup> being slightly more apolar. TPA<sup>+</sup> has a tendency to form small clusters of 2-4 molecules and to fold into a compact configuration. Both molecules correlate similarly with the bromide ion but do not dissociate completely at this concentration.</p>}},
author = {{Nilsson, Emelie J. and Alfredsson, Viveka and Bowron, Daniel T. and Edler, Karen J.}},
issn = {{1463-9076}},
language = {{eng}},
month = {{04}},
number = {{16}},
pages = {{11193--11201}},
publisher = {{Royal Society of Chemistry}},
series = {{Physical Chemistry Chemical Physics}},
title = {{A neutron scattering and modelling study of aqueous solutions of tetramethylammonium and tetrapropylammonium bromide}},
url = {{http://dx.doi.org/10.1039/c6cp01389a}},
doi = {{10.1039/c6cp01389a}},
volume = {{18}},
year = {{2016}},
}