Robust In Situ Magnetic Resonance Imaging of Heterogeneous Catalytic Hydrogenation with and without Hyperpolarization
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
ChemCatChem
ISSN: 1867-3880
, E-ISSN: 1867-3899
|
| Вых. Данные |
Год: 2019,
Том: 11,
Номер: 3,
Страницы: 969-973
Страниц
: 6
DOI:
10.1002/cctc.201801820
|
| Ключевые слова |
heterogeneous hydrogenation; MRI; parahydrogen; reactor; rhodium |
| Авторы |
Kovtunov Kirill V.
1,2
,
Lebedev Dmitry
3
,
Svyatova Alexandra
1,2
,
Pokochueva Ekaterina V.
1,2
,
Prosvirin Igor P.
4
,
Gerasimov Evgeniy Y.
2,4
,
Bukhtiyarov Valerii I.
4
,
Müller Christoph R.
5
,
Fedorov Alexey
5
,
Koptyug Igor V.
1,2
|
| Организации |
| 1 |
International Tomography Center, SB RAS, 3 A Institutskaya st., Novosibirsk, 630090, Russian Federation
|
| 2 |
Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russian Federation
|
| 3 |
Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1–5, Zürich, CH 8093, Switzerland
|
| 4 |
Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev pr., Novosibirsk, 630090, Russian Federation
|
| 5 |
Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 21, Zürich, CH 8092, Switzerland
|
|
Информация о финансировании (4)
|
1
|
Российский научный фонд
|
17-73-20030
|
|
2
|
Министерство науки и высшего образования Российской Федерации
|
0267-2019-0004
|
|
3
|
Российский фонд фундаментальных исследований
|
18-33-20019 (АААА-А18-118101090008-1)
|
|
4
|
Swiss National Science Foundation
|
200020_182692
|
Magnetic resonance imaging (MRI) is a powerful technique to characterize reactors during operating catalytic processes. However, MRI studies of heterogeneous catalytic reactions are particularly challenging because the low spin density of reacting and product fluids (for gas phase reactions) as well as magnetic field inhomogeneity, caused by the presence of a solid catalyst inside a reactor, exacerbate already low intrinsic sensitivity of this method. While hyperpolarization techniques such as parahydrogen induced polarization (PHIP) can substantially increase the NMR signal intensity, this general strategy to enable MR imaging of working heterogeneous catalysts to date remains underexplored. Here, we present a new type of model catalytic reactors for MRI that allow the characterization of a heterogeneous hydrogenation reaction aided by the PHIP signal enhancement, but also suitable for the imaging of regular non‐polarized gases. These catalytic systems permit exploring the complex interplay between chemistry and fluid‐dynamics that are typically encountered in practical systems, but mostly absent in simple batch reactors. High stability of the model reactors at catalytic conditions and their fabrication simplicity make this approach compelling for in situ studies of heterogeneous catalytic processes by MRI.