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Analysis of the beh...
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Shamshir, AdelUmeå universitet,Kemiska institutionen
(författare)
Analysis of the behaviour of confined molecules using 2H T1 nuclear magnetic relaxation dispersion
- Artikel/kapitelEngelska2020
Förlag, utgivningsår, omfång ...
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2019-07-24
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Taylor & Francis,2020
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electronicrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:umu-162676
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-162676URI
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https://doi.org/10.1080/00268976.2019.1645367DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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A four-site exchange model is developed in order to explain deuterium -nuclear magnetic relaxation dispersion (NMRD) profiles of acetonitrile in silica pore systems. The four-site exchange model comprises a bulk, surface and two types of burried or cavity sites. It is found that the residence time of acetonitrile- at a flat Si-surface is less than 100 ps. No bilayer-like ordering of acetonitrile is formed at the Si-surface because no quadrupole splitting was observed. The dispersion in the deuterium T1-NMRD profiles are due to relatively few so-called beta-sites with molecular residence time in the range 0.2-2 micro seconds. This deuterium T-NMR dispersion experiment suggest that the retention time of different analysts can be studied in terms of their residence time in beta sites.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Sparrman, TobiasUmeå universitet,Kemiska institutionen(Swepub:umu)tosp0001
(författare)
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Westlund, Per-OlofUmeå universitet,Kemiska institutionen(Swepub:umu)pewe0001
(författare)
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Umeå universitetKemiska institutionen
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Molecular Physics: Taylor & Francis118:60026-89761362-3028
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