Spatially Resolved NMR Spectroscopy for Operando Studies of Heterogeneous Hydrogenation with Parahydrogen Full article
| Journal |
Applied Magnetic Resonance
ISSN: 0937-9347 , E-ISSN: 1613-7507 |
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| Output data | Year: 2023, Volume: 54, Pages: 1271–1282 Pages count : 12 DOI: 10.1007/s00723-023-01587-y | ||||||
| Tags | Catalysts; Density of gases; Density of liquids; Ionic liquids; Magnetic resonance imaging; Nuclear magnetic resonance spectroscopy | ||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0002 |
| 2 | Russian Science Foundation | 22-43-04426 |
Abstract:
Magnetic resonance imaging (MRI) is a unique tool for operando studies owing to its non-invasive manner of signal detection. MRI can provide information about structure of the reactor, distribution of the reagents and products in the reactor, and heat and mass transport processes. However, the heterogeneous solid phase of a catalyst in a reactor largely distorts the static magnetic field of an MRI instrument, which leads to a major loss in spectroscopic resolution and measurement sensitivity. On top of that, many chemical reactions involve gases, so that the reduced spin density compared to liquids is yet another complication in such studies. To overcome these challenges, a proper choice of model catalytic reactors for NMR-based experiments is required. In this study, the configuration of model catalytic reactors was varied to explore its effect on the spatially resolved 1H NMR spectra acquired during heterogeneous hydrogenation of propene to propane with parahydrogen over several supported metal catalysts. The results demonstrate that a judicial choice of a reactor geometry in combination with signal enhancement provided by parahydrogen makes such studies feasible and informative.
Cite:
Skovpin I.V.
, Trepakova A.I.
, Kovtunova L.M.
, Koptyug I.V.
Spatially Resolved NMR Spectroscopy for Operando Studies of Heterogeneous Hydrogenation with Parahydrogen
Applied Magnetic Resonance. 2023. V.54. P.1271–1282. DOI: 10.1007/s00723-023-01587-y WOS Scopus РИНЦ AN OpenAlex
Spatially Resolved NMR Spectroscopy for Operando Studies of Heterogeneous Hydrogenation with Parahydrogen
Applied Magnetic Resonance. 2023. V.54. P.1271–1282. DOI: 10.1007/s00723-023-01587-y WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Jun 14, 2023 |
| Accepted: | Jul 27, 2023 |
| Published online: | Aug 9, 2023 |
| Published print: | Dec 1, 2023 |
Identifiers:
| Web of science: | WOS:001044854300001 |
| Scopus: | 2-s2.0-85167353012 |
| Elibrary: | 54948177 |
| Chemical Abstracts: | 2023:1675923 |
| OpenAlex: | W4385702752 |