TY - CHAP

T1 - Magnetic Resonance Imaging (MRI)

AU - Koptyug, Igor

AU - Kovtunov, Kirill

AU - Svyatova, Alexandra

N1 - The authors acknowledge the Russian Science Foundation (grant 19-13-00047) for financial support of this work.

PY - 2023

Y1 - 2023

N2 - Magnetic resonance imaging (MRI) and spatially resolved nuclear magnetic resonance (NMR) spectroscopy (MRS) can provide a broad variety of useful information about the processes inside heterogeneous catalysts and catalytic reactors. In particular, heat and mass transport processes, chemical composition and reaction conversion, etc., can be visualized and quantified with MRI noninvasively and with spatial resolution. As NMR-based techniques are inherently spectroscopic, they are naturally suited for operando studies of catalysts and reactors under working conditions. However, applications of the MRI/MRS techniques for the studies of catalytic processes are anything but routine because of a number of technical limitations, the specifics of the instrumentation required for such experiments, and more significantly – because of the limited sensitivity of the NMR-based techniques. Fortunately, spin hyperpolarization techniques of modern magnetic resonance are able to boost the sensitivity of NMR-based methods by 3–4 orders of magnitude and more, opening new possibilities for the development of mechanistic and imaging operando and in situ tools for heterogeneous catalysis. In particular, catalytic hydrogenation of unsaturated compounds with parahydrogen is a promising route toward a significant enhancement of sensitivity in magnetic resonance.

AB - Magnetic resonance imaging (MRI) and spatially resolved nuclear magnetic resonance (NMR) spectroscopy (MRS) can provide a broad variety of useful information about the processes inside heterogeneous catalysts and catalytic reactors. In particular, heat and mass transport processes, chemical composition and reaction conversion, etc., can be visualized and quantified with MRI noninvasively and with spatial resolution. As NMR-based techniques are inherently spectroscopic, they are naturally suited for operando studies of catalysts and reactors under working conditions. However, applications of the MRI/MRS techniques for the studies of catalytic processes are anything but routine because of a number of technical limitations, the specifics of the instrumentation required for such experiments, and more significantly – because of the limited sensitivity of the NMR-based techniques. Fortunately, spin hyperpolarization techniques of modern magnetic resonance are able to boost the sensitivity of NMR-based methods by 3–4 orders of magnitude and more, opening new possibilities for the development of mechanistic and imaging operando and in situ tools for heterogeneous catalysis. In particular, catalytic hydrogenation of unsaturated compounds with parahydrogen is a promising route toward a significant enhancement of sensitivity in magnetic resonance.

KW - Ethylene oligomerization

KW - Heterogeneous catalytic hydrogenation

KW - Hyperpolarization

KW - MRI of operating reactor

KW - Magnetic resonance imaging

KW - Parahydrogen

KW - Spatially resolved NMR spectroscopy

KW - Spatially resolved NMR thermometry

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85159872335&origin=inward&txGid=0a4ebfa70549b1e0d1b1b127ba1ab765

UR - https://www.mendeley.com/catalogue/3aae8827-7807-398d-ac41-a41e798acb09/

U2 - 10.1007/978-3-031-07125-6_37

DO - 10.1007/978-3-031-07125-6_37

M3 - Chapter

SN - 978-3-031-07124-9

T3 - Springer Handbooks

SP - 849

EP - 867

BT - Springer Handbooks

PB - Springer Science and Business Media Deutschland GmbH

ER -