Robust In Situ Magnetic Resonance Imaging of Heterogeneous Catalytic Hydrogenation with and without Hyperpolarization | Sciact - CRIS-system of Boreskov Institute of Catalysis

Robust In Situ Magnetic Resonance Imaging of Heterogeneous Catalytic Hydrogenation with and without Hyperpolarization Full article

Journal

ChemCatChem
ISSN: 1867-3880 , E-ISSN: 1867-3899

Output data

Year: 2019, Volume: 11, Number: 3, Pages: 969-973 Pages count : 6 DOI: 10.1002/cctc.201801820, 10.1002/cctc.201900111

Tags

heterogeneous hydrogenation; MRI; parahydrogen; reactor; rhodium

Authors

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

Affiliations

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

Funding (4)

1	Russian Science Foundation	17-73-20030
2	Ministry of Science and Higher Education of the Russian Federation	0267-2019-0004
3	Russian Foundation for Basic Research	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.

Kovtunov K.V. , Lebedev D. , Svyatova A. , Pokochueva E.V. , Prosvirin I.P. , Gerasimov E.Y. , Bukhtiyarov V.I. , Müller C.R. , Fedorov A. , Koptyug I.V.
Robust In Situ Magnetic Resonance Imaging of Heterogeneous Catalytic Hydrogenation with and without Hyperpolarization
ChemCatChem. 2019. V.11. N3. P.969-973. DOI: 10.1002/cctc.201801820, 10.1002/cctc.201900111 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Nov 9, 2018
Accepted:	Dec 16, 2018
Published online:	Jan 9, 2019
Published print:	Feb 6, 2019

Web of science:	WOS:000459736500004
Scopus:	2-s2.0-85059674680
Elibrary:	38642832
Chemical Abstracts:	2019:77231
OpenAlex:	W2904295306

DB	Citing
Scopus	19
Web of science	16
Elibrary	18
OpenAlex	14