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Dynamics of ethylam...
Dynamics of ethylammonium nitrate near PTFE surface
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- Filippov, Andrei, PhD, 1957- (författare)
- Luleå tekniska universitet,Kemiteknik,Medical and Biological Physics, Kazan State Medical University, 420012 Kazan, Russia; Institute of Physics, Kazan Federal University, 420008 Kazan, Russia
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- Gnezdilov, Oleg I. (författare)
- Institute of Physics, Kazan Federal University, 420008 Kazan, Russia
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- Antzutkin, Oleg N. (författare)
- Luleå tekniska universitet,Kemiteknik
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(creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Magnetic Resonance Imaging. - : Elsevier. - 0730-725X .- 1873-5894. ; 85, s. 102-107
- Relaterad länk:
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https://doi.org/10.1...
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visa fler...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Self-diffusion of ions in the protic ionic liquid ethylammonium nitrate (EAN) was studied by 1H NMR pulsed field gradient techniques between 294 and 393 K in the presence of a PTFE insert in a 5-mm NMR tube. At all temperatures, the bulk diffusion of ions (measured by 1H and 15N NMR) can be described by a unique diffusion coefficient. The presence of solid hydrophobic surfaces of PTFE induces regions of EAN in their vicinity, where diffusion of ions, both cations and anions, is reduced compared to the bulk values. An additional line-shape analysis in 1H NMR spectra showed that local mobility of ethylammonium cations in the surface layers near PTFE is also reduced.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- Ionic liquid
- Solid-liquid interface
- Pulsed-field gradient
- NMR diffusometry
- Ion dynamics
- Chemistry of Interfaces
- Gränsytors kemi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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