A large fixed bed reactor for MRI operando experiments at elevated temperature and pressure
Recently, in situ studies using nuclear magnetic resonance (NMR) have shown the possibility to monitor local transport phenomena of gas-phase reactions inside opaque structures. Their application to heterogeneously catalyzed reactions remains challenging due to inherent temperature and pressure cons...
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| Veröffentlicht in: | Review of scientific instruments 2021-04, Vol.92 (4), p.043711-043711 |
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| container_title | Review of scientific instruments |
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| creator | Ridder, Harm Sinn, Christoph Pesch, Georg R. Ilsemann, Jan Dreher, Wolfgang Thöming, Jorg |
| description | Recently, in situ studies using nuclear magnetic resonance (NMR) have shown the possibility to monitor local transport phenomena of gas-phase reactions inside opaque structures. Their application to heterogeneously catalyzed reactions remains challenging due to inherent temperature and pressure constraints. In this work, an NMR-compatible reactor was designed, manufactured, and tested, which can endure high temperatures and increased pressure. In temperature and pressure tests, the reactor withstood pressures up to 28 bars at room temperature and temperatures over 400 °C and exhibited only little magnetic shielding. Its applicability was demonstrated by performing the CO2 methanation reaction, which was measured operando for the first time by using a 3D magnetic resonance spectroscopic imaging sequence. The reactor design is described in detail, allowing its easy adaptation for different chemical reactions and other NMR measurements under challenging conditions. |
| doi_str_mv | 10.1063/5.0044795 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0034-6748 |
| ispartof | Review of scientific instruments, 2021-04, Vol.92 (4), p.043711-043711 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_proquest_journals_2515885122 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Chemical reactions Fixed bed reactors Fixed beds High temperature Magnetic resonance imaging Magnetic shielding Methanation NMR Nuclear magnetic resonance Reactor design Room temperature Scientific apparatus & instruments Transport phenomena |
| title | A large fixed bed reactor for MRI operando experiments at elevated temperature and pressure |
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