One-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure.
We report a powerful method for capturing the time-resolved concentration profiles, liquid swelling and surface phenomena during the absorption of methane (CH4) in still liquid ethanol (C2D6O) and n-decane (n-C10D22) and at high spatial resolution (pixel size 21.07 μm) using neutron imaging. Absorpt...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science (PLoS)
2020
|
Subjects: | |
Online Access: | https://doi.org/10.1371/journal.pone.0238470 https://doaj.org/article/134c96785cff41d5b5afd77d74591d31 |
id |
ftdoajarticles:oai:doaj.org/article:134c96785cff41d5b5afd77d74591d31 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:134c96785cff41d5b5afd77d74591d31 2023-05-15T17:12:06+02:00 One-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure. Ondřej Vopička Petr Číhal Martina Klepić Jan Crha Vladimír Hynek Karel Trtík Pierre Boillat Pavel Trtik 2020-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0238470 https://doaj.org/article/134c96785cff41d5b5afd77d74591d31 EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0238470 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0238470 https://doaj.org/article/134c96785cff41d5b5afd77d74591d31 PLoS ONE, Vol 15, Iss 9, p e0238470 (2020) Medicine R Science Q article 2020 ftdoajarticles https://doi.org/10.1371/journal.pone.0238470 2022-12-31T06:58:34Z We report a powerful method for capturing the time-resolved concentration profiles, liquid swelling and surface phenomena during the absorption of methane (CH4) in still liquid ethanol (C2D6O) and n-decane (n-C10D22) and at high spatial resolution (pixel size 21.07 μm) using neutron imaging. Absorption of supercritical methane was followed at two temperatures and two pressures of methane, namely 7.0, 37.8 °C and 80, 120 bar. Fick's second law, which was used in the liquid-fixed coordinates, enabled for an adequate parameterization of the observed concentration profiles and liquid levels using simple analytical expressions. For both studied liquids, anomalously slow diffusion was observed in the initial stage of the absorption experiment. This was ascribed to the slow formation of the surface excess on the interface, time constant ranged 130-275 s. The axial symmetry of the cell allowed for the tomographic reconstructions of the profiles of the menisci. Based on these profiles, contact angle and surface tension were evaluated using the Young-Laplace equation. Overall, neutron imaging made it possible to capture time- and space-resolved information from which the methane concentration, liquid level and meniscus shape under high-pressure conditions inside a cylindrical titanium vessel were quantitatively derived. Multiple characteristics of ethanol, a methane hydrate inhibitor, and n-decane, a model constituent of crude oil, were thus measured for the first time under industrially relevant conditions in a one-pot experiment. Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles Laplace ENVELOPE(141.467,141.467,-66.782,-66.782) PLOS ONE 15 9 e0238470 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Ondřej Vopička Petr Číhal Martina Klepić Jan Crha Vladimír Hynek Karel Trtík Pierre Boillat Pavel Trtik One-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure. |
topic_facet |
Medicine R Science Q |
description |
We report a powerful method for capturing the time-resolved concentration profiles, liquid swelling and surface phenomena during the absorption of methane (CH4) in still liquid ethanol (C2D6O) and n-decane (n-C10D22) and at high spatial resolution (pixel size 21.07 μm) using neutron imaging. Absorption of supercritical methane was followed at two temperatures and two pressures of methane, namely 7.0, 37.8 °C and 80, 120 bar. Fick's second law, which was used in the liquid-fixed coordinates, enabled for an adequate parameterization of the observed concentration profiles and liquid levels using simple analytical expressions. For both studied liquids, anomalously slow diffusion was observed in the initial stage of the absorption experiment. This was ascribed to the slow formation of the surface excess on the interface, time constant ranged 130-275 s. The axial symmetry of the cell allowed for the tomographic reconstructions of the profiles of the menisci. Based on these profiles, contact angle and surface tension were evaluated using the Young-Laplace equation. Overall, neutron imaging made it possible to capture time- and space-resolved information from which the methane concentration, liquid level and meniscus shape under high-pressure conditions inside a cylindrical titanium vessel were quantitatively derived. Multiple characteristics of ethanol, a methane hydrate inhibitor, and n-decane, a model constituent of crude oil, were thus measured for the first time under industrially relevant conditions in a one-pot experiment. |
format |
Article in Journal/Newspaper |
author |
Ondřej Vopička Petr Číhal Martina Klepić Jan Crha Vladimír Hynek Karel Trtík Pierre Boillat Pavel Trtik |
author_facet |
Ondřej Vopička Petr Číhal Martina Klepić Jan Crha Vladimír Hynek Karel Trtík Pierre Boillat Pavel Trtik |
author_sort |
Ondřej Vopička |
title |
One-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure. |
title_short |
One-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure. |
title_full |
One-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure. |
title_fullStr |
One-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure. |
title_full_unstemmed |
One-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure. |
title_sort |
one-pot neutron imaging of surface phenomena, swelling and diffusion during methane absorption in ethanol and n-decane under high pressure. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2020 |
url |
https://doi.org/10.1371/journal.pone.0238470 https://doaj.org/article/134c96785cff41d5b5afd77d74591d31 |
long_lat |
ENVELOPE(141.467,141.467,-66.782,-66.782) |
geographic |
Laplace |
geographic_facet |
Laplace |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
PLoS ONE, Vol 15, Iss 9, p e0238470 (2020) |
op_relation |
https://doi.org/10.1371/journal.pone.0238470 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0238470 https://doaj.org/article/134c96785cff41d5b5afd77d74591d31 |
op_doi |
https://doi.org/10.1371/journal.pone.0238470 |
container_title |
PLOS ONE |
container_volume |
15 |
container_issue |
9 |
container_start_page |
e0238470 |
_version_ |
1766068874781917184 |