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Eills J, Hale W, Utz M. Synergies between Hyperpolarized NMR and Microfluidics: A Review. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2022; 128:44-69. [PMID: 35282869 DOI: 10.1016/j.pnmrs.2021.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 06/14/2023]
Abstract
Hyperpolarized nuclear magnetic resonance and lab-on-a-chip microfluidics are two dynamic, but until recently quite distinct, fields of research. Recent developments in both areas increased their synergistic overlap. By microfluidic integration, many complex experimental steps can be brought together onto a single platform. Microfluidic devices are therefore increasingly finding applications in medical diagnostics, forensic analysis, and biomedical research. In particular, they provide novel and powerful ways to culture cells, cell aggregates, and even functional models of entire organs. Nuclear magnetic resonance is a non-invasive, high-resolution spectroscopic technique which allows real-time process monitoring with chemical specificity. It is ideally suited for observing metabolic and other biological and chemical processes in microfluidic systems. However, its intrinsically low sensitivity has limited its application. Recent advances in nuclear hyperpolarization techniques may change this: under special circumstances, it is possible to enhance NMR signals by up to 5 orders of magnitude, which dramatically extends the utility of NMR in the context of microfluidic systems. Hyperpolarization requires complex chemical and/or physical manipulations, which in turn may benefit from microfluidic implementation. In fact, many hyperpolarization methodologies rely on processes that are more efficient at the micro-scale, such as molecular diffusion, penetration of electromagnetic radiation into a sample, or restricted molecular mobility on a surface. In this review we examine the confluence between the fields of hyperpolarization-enhanced NMR and microfluidics, and assess how these areas of research have mutually benefited one another, and will continue to do so.
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Affiliation(s)
- James Eills
- Institute for Physics, Johannes Gutenberg University, D-55090 Mainz, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, Helmholtz-Institut Mainz, 55128 Mainz, Germany.
| | - William Hale
- Department of Chemistry, University of Florida, 32611, USA
| | - Marcel Utz
- School of Chemistry, University of Southampton, SO17 1BJ, UK.
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2
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Pokochueva EV, Burueva DB, Salnikov OG, Koptyug IV. Heterogeneous Catalysis and Parahydrogen-Induced Polarization. Chemphyschem 2021; 22:1421-1440. [PMID: 33969590 DOI: 10.1002/cphc.202100153] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/05/2021] [Indexed: 01/11/2023]
Abstract
Parahydrogen-induced polarization with heterogeneous catalysts (HET-PHIP) has been a subject of extensive research in the last decade since its first observation in 2007. While NMR signal enhancements obtained with such catalysts are currently below those achieved with transition metal complexes in homogeneous hydrogenations in solution, this relatively new field demonstrates major prospects for a broad range of advanced fundamental and practical applications, from providing catalyst-free hyperpolarized fluids for biomedical magnetic resonance imaging (MRI) to exploring mechanisms of industrially important heterogeneous catalytic processes. This review covers the evolution of the heterogeneous catalysts used for PHIP observation, from metal complexes immobilized on solid supports to bulk metals and single-atom catalysts and discusses the general visions for maximizing the obtained NMR signal enhancements using HET-PHIP. Various practical applications of HET-PHIP, both for catalytic studies and for potential production of hyperpolarized contrast agents for MRI, are described.
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Affiliation(s)
- Ekaterina V Pokochueva
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, 3 A Institutskaya St., 630090, Novosibirsk, Russia.,Novosibirsk State University, 2 Pirogova St., 630090, Novosibirsk, Russia
| | - Dudari B Burueva
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, 3 A Institutskaya St., 630090, Novosibirsk, Russia.,Novosibirsk State University, 2 Pirogova St., 630090, Novosibirsk, Russia
| | - Oleg G Salnikov
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, 3 A Institutskaya St., 630090, Novosibirsk, Russia.,Novosibirsk State University, 2 Pirogova St., 630090, Novosibirsk, Russia.,Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Ave., 630090, Novosibirsk, Russia
| | - Igor V Koptyug
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, 3 A Institutskaya St., 630090, Novosibirsk, Russia.,Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Ave., 630090, Novosibirsk, Russia
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Abstract
:
The supported ionic liquids have shown immense potential for numerous applications
in catalysis and separation science. In the present review, the remarkable contribution
of supported ionic liquids has been highlighted. The main emphasis has been laid on
describing the facile separation of gas from binary gas mixtures owing to the capability of
selective transport of permeable gases across supported membranes and removal of environmentally
hazard sulfur compounds from fuels. The catalytic action of supported ionic
liquids has been discussed in other applications such as biodiesel (biofuel) synthesis by
transesterification/esterification processes, waste CO2 fixation into advantageous cyclic
carbonates, and various chemical transformations in organic green synthesis. This review
enclosed a maximum of the published data of the last ten years and also recently accomplished
work concerning applications in various research areas like separation sciences, chemical transformations
in organic green synthesis, biofuel synthesis, waste CO2 fixation, and purification of fuels by desulfurization.
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Affiliation(s)
- Pawanpreet Kaur
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology Longowal, Sangrur, India
| | - Harish Kumar Chopra
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology Longowal, Sangrur, India
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4
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Rontu V, Selent A, Zhivonitko VV, Scotti G, Koptyug IV, Telkki VV, Franssila S. Efficient Catalytic Microreactors with Atomic-Layer-Deposited Platinum Nanoparticles on Oxide Support. Chemistry 2017; 23:16835-16842. [DOI: 10.1002/chem.201703391] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Ville Rontu
- Department of Chemistry and Materials Science; Aalto University; P.O. Box 16200 00076 Aalto Finland
| | - Anne Selent
- NMR Research Unit; University of Oulu; P.O.Box 3000 90014 University of Oulu Finland
| | - Vladimir V. Zhivonitko
- NMR Research Unit; University of Oulu; P.O.Box 3000 90014 University of Oulu Finland
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center SB RAS; 3A Institutskaya St. Novosibirsk 630090 Russia
- Novosibirsk State University; Pirogova St. 2 Novosibirsk 630090 Russia
| | - Gianmario Scotti
- Department of Chemistry and Materials Science; Aalto University; P.O. Box 16200 00076 Aalto Finland
| | - Igor V. Koptyug
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center SB RAS; 3A Institutskaya St. Novosibirsk 630090 Russia
- Novosibirsk State University; Pirogova St. 2 Novosibirsk 630090 Russia
| | - Ville-Veikko Telkki
- NMR Research Unit; University of Oulu; P.O.Box 3000 90014 University of Oulu Finland
| | - Sami Franssila
- Department of Chemistry and Materials Science; Aalto University; P.O. Box 16200 00076 Aalto Finland
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5
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Kovtunov KV, Salnikov OG, Zhivonitko VV, Skovpin IV, Bukhtiyarov VI, Koptyug IV. Catalysis and Nuclear Magnetic Resonance Signal Enhancement with Parahydrogen. Top Catal 2016. [DOI: 10.1007/s11244-016-0688-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Wang MM, Liu SW, Li L, Yu ST, Xie CX, Song ZQ. Hydrogenation of rosin over PVP-stabilized Pd nanoparticles in aqueous/organic biphasic system. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2453-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Salnikov OG, Burueva DB, Barskiy DA, Bukhtiyarova GA, Kovtunov KV, Koptyug IV. A Mechanistic Study of Thiophene Hydrodesulfurization by the Parahydrogen-Induced Polarization Technique. ChemCatChem 2015. [DOI: 10.1002/cctc.201500691] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Oleg G. Salnikov
- International Tomography Center SB RAS; Insitutskaya Street, 3 A 630090 Novosibirsk Russia
- Novosibirsk State University; Pirogova Street, 2 630090 Novosibirsk Russia
| | - Dudari B. Burueva
- International Tomography Center SB RAS; Insitutskaya Street, 3 A 630090 Novosibirsk Russia
- Novosibirsk State University; Pirogova Street, 2 630090 Novosibirsk Russia
| | - Danila A. Barskiy
- International Tomography Center SB RAS; Insitutskaya Street, 3 A 630090 Novosibirsk Russia
- Novosibirsk State University; Pirogova Street, 2 630090 Novosibirsk Russia
| | | | - Kirill V. Kovtunov
- International Tomography Center SB RAS; Insitutskaya Street, 3 A 630090 Novosibirsk Russia
- Novosibirsk State University; Pirogova Street, 2 630090 Novosibirsk Russia
| | - Igor V. Koptyug
- International Tomography Center SB RAS; Insitutskaya Street, 3 A 630090 Novosibirsk Russia
- Novosibirsk State University; Pirogova Street, 2 630090 Novosibirsk Russia
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8
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Corma A, Salnikov OG, Barskiy DA, Kovtunov KV, Koptyug IV. Single-atom gold catalysis in the context of developments in parahydrogen-induced polarization. Chemistry 2015; 21:7012-5. [PMID: 25754067 DOI: 10.1002/chem.201406664] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Indexed: 01/04/2023]
Abstract
A highly isolated monoatomic gold catalyst, with single gold atoms dispersed on multiwalled carbon nanotubes (MWCNTs), has been synthesized, characterized, and tested in heterogeneous hydrogenation of 1,3-butadiene and 1-butyne with parahydrogen to maximize the polarization level and the contribution of the pairwise hydrogen addition route. The Au/MWCNTs catalyst was found to be active and efficient in pairwise hydrogen addition and the estimated contributions from the pairwise hydrogen addition route are at least an order of magnitude higher than those for supported metal nanoparticle catalysts. Therefore, the use of the highly isolated monoatomic catalysts is very promising for production of hyperpolarized fluids that can be used for the significant enhancement of NMR signals. A mechanism of 1,3-butadiene hydrogenation with parahydrogen over the highly isolated monoatomic Au/MWCNTs catalyst is also proposed.
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Affiliation(s)
- Avelino Corma
- Instituto de Tecnologia Quimica UPV-CSIC, Avda. de los Naranjos, s/n, 46022 Valencia (Spain)
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Navlani-García M, Martis M, Lozano-Castelló D, Cazorla-Amorós D, Mori K, Yamashita H. Investigation of Pd nanoparticles supported on zeolites for hydrogen production from formic acid dehydrogenation. Catal Sci Technol 2015. [DOI: 10.1039/c4cy00667d] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium nanoparticles supported on different BETA zeolites are promising catalysts for H2production from formic acid dehydrogenation.
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Affiliation(s)
- M. Navlani-García
- Departamento de Química Inorgánica e Instituto Universitario de Materiales
- Universidad de Alicante
- Alicante
- Spain
| | - M. Martis
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - D. Lozano-Castelló
- Departamento de Química Inorgánica e Instituto Universitario de Materiales
- Universidad de Alicante
- Alicante
- Spain
| | - D. Cazorla-Amorós
- Departamento de Química Inorgánica e Instituto Universitario de Materiales
- Universidad de Alicante
- Alicante
- Spain
| | - K. Mori
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - H. Yamashita
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
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10
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Ananikov VP, Khemchyan LL, Ivanova YV, Bukhtiyarov VI, Sorokin AM, Prosvirin IP, Vatsadze SZ, Medved'ko AV, Nuriev VN, Dilman AD, Levin VV, Koptyug IV, Kovtunov KV, Zhivonitko VV, Likholobov VA, Romanenko AV, Simonov PA, Nenajdenko VG, Shmatova OI, Muzalevskiy VM, Nechaev MS, Asachenko AF, Morozov OS, Dzhevakov PB, Osipov SN, Vorobyeva DV, Topchiy MA, Zotova MA, Ponomarenko SA, Borshchev OV, Luponosov YN, Rempel AA, Valeeva AA, Stakheev AY, Turova OV, Mashkovsky IS, Sysolyatin SV, Malykhin VV, Bukhtiyarova GA, Terent'ev AO, Krylov IB. Development of new methods in modern selective organic synthesis: preparation of functionalized molecules with atomic precision. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v83n10abeh004471] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Bröhl A, Giernoth R. PHIP NMR Spectroscopy in Ionic Liquids: Influence of Salts on the Intensity of Polarization Signals. Anal Chem 2014; 86:10311-4. [DOI: 10.1021/ac502537z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andreas Bröhl
- Department für Chemie, Universität zu Köln, Greinstr.
4, D-50939 Köln, Germany
| | - Ralf Giernoth
- Department für Chemie, Universität zu Köln, Greinstr.
4, D-50939 Köln, Germany
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12
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Buntkowsky G, Gutmann T, Petrova MV, Ivanov KL, Bommerich U, Plaumann M, Bernarding J. Dipolar induced para-hydrogen-induced polarization. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2014; 63-64:20-29. [PMID: 25218522 DOI: 10.1016/j.ssnmr.2014.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 07/17/2014] [Accepted: 07/28/2014] [Indexed: 06/03/2023]
Abstract
Analytical expressions for the signal enhancement in solid-state PHIP NMR spectroscopy mediated by homonuclear dipolar interactions and single pulse or spin-echo excitation are developed and simulated numerically. It is shown that an efficient enhancement of the proton NMR signal in solid-state NMR studies of chemisorbed hydrogen on surfaces is possible. Employing typical reaction efficacy, enhancement-factors of ca. 30-40 can be expected both under ALTADENA and under PASADENA conditions. This result has important consequences for the practical application of the method, since it potentially allows the design of an in-situ flow setup, where the para-hydrogen is adsorbed and desorbed from catalyst surfaces inside the NMR magnet.
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Affiliation(s)
- Gerd Buntkowsky
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, D-64287 Darmstadt, Germany.
| | - Torsten Gutmann
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, D-64287 Darmstadt, Germany
| | - Marina V Petrova
- International Tomography Center, Institutskaya 3a, Novosibirsk 630090, Russia
| | - Konstantin L Ivanov
- International Tomography Center, Institutskaya 3a, Novosibirsk 630090, Russia; Novosibirsk State University, Pirogova 2, Novosibirsk 630090, Russia
| | - Ute Bommerich
- Leibniz-Institute for Neurobiology, Magdeburg, Germany
| | - Markus Plaumann
- Dept. of Biometry and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany
| | - Johannes Bernarding
- Dept. of Biometry and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany
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13
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Linhardt R, Kainz QM, Grass RN, Stark WJ, Reiser O. Palladium nanoparticles supported on ionic liquid modified, magnetic nanobeads – recyclable, high-capacity catalysts for alkene hydrogenation. RSC Adv 2014. [DOI: 10.1039/c3ra46946h] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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14
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Spin hyperpolarization in NMR to address enzymatic processes in vivo. MENDELEEV COMMUNICATIONS 2013. [DOI: 10.1016/j.mencom.2013.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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15
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Zhivonitko VV, Telkki VV, Leppäniemi J, Scotti G, Franssila S, Koptyug IV. Remote detection NMR imaging of gas phase hydrogenation in microfluidic chips. LAB ON A CHIP 2013; 13:1554-1561. [PMID: 23435499 DOI: 10.1039/c3lc41309h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The heterogeneous hydrogenation reaction of propene into propane in microreactors is studied by remote detection (RD) nuclear magnetic resonance (NMR). The reactors consist of 36 parallel microchannels (50 × 50 μm(2) cross sections) coated with a platinum catalyst. We show that RD NMR is capable of monitoring reactions with sub-millimeter spatial resolution over a field-of-view of 30 × 8 mm(2) with a steady-state time-of-flight time resolution in the tens of milliseconds range. The method enables the visualization of active zones in the reactors, and time-of-flight is used to image the flow velocity variations inside the reactor. The overall reaction yields determined by NMR varied from 10% to 50%, depending on the flow rate, temperature and length of the reaction channels. The reaction yield was highest for the channels with the lowest flow velocity. Propane T1 relaxation time in the channels, estimated by means of RD NMR images, was 270 ± 18 ms. No parahydrogen-induced polarization (PHIP) was observed in experiments carried out using parahydrogen-enriched H2, indicating fast spreading of the hydrogen atoms on the sputtered Pt surface. In spite of the low concentration of gases, RD NMR made imaging of gas phase hydrogenation of propene in microreactors feasible, and it is a highly versatile method for characterizing on-chip chemical reactions.
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Affiliation(s)
- Vladimir V Zhivonitko
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, 3A Institutskaya St., Novosibirsk 630090, Russia.
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Ohtaka A. Recyclable Polymer-Supported Nanometal Catalysts in Water. CHEM REC 2013; 13:274-85. [DOI: 10.1002/tcr.201300001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Atsushi Ohtaka
- Department of Applied Chemistry; Faculty of Engineering; Osaka Institute of Technology; Osaka; 535-8585; Japan
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17
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Uberman PM, Pérez LA, Lacconi GI, Martín SE. PVP-stabilized palladium nanoparticles electrochemically obtained as effective catalysts in aqueous medium Suzuki–Miyaura reaction. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcata.2012.06.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Koptyug IV. MRI of mass transport in porous media: drying and sorption processes. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2012; 65:1-65. [PMID: 22781314 DOI: 10.1016/j.pnmrs.2011.12.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Accepted: 12/05/2011] [Indexed: 06/01/2023]
Affiliation(s)
- Igor V Koptyug
- International Tomography Center, SB RAS, 3A Institutskaya Str., Novosibirsk 630090, Russian Federation.
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19
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Zhivonitko VV, Telkki VV, Koptyug IV. Characterization of Microfluidic Gas Reactors Using Remote-Detection MRI and Parahydrogen-Induced Polarization. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202967] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Zhivonitko VV, Telkki VV, Koptyug IV. Characterization of Microfluidic Gas Reactors Using Remote-Detection MRI and Parahydrogen-Induced Polarization. Angew Chem Int Ed Engl 2012; 51:8054-8. [DOI: 10.1002/anie.201202967] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 05/18/2012] [Indexed: 11/10/2022]
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21
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Kovtunov KV, Zhivonitko VV, Skovpin IV, Barskiy DA, Koptyug IV. Parahydrogen-induced polarization in heterogeneous catalytic processes. Top Curr Chem (Cham) 2012; 338:123-80. [PMID: 23097028 DOI: 10.1007/128_2012_371] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Parahydrogen-induced polarization of nuclear spins provides enhancements of NMR signals for various nuclei of up to four to five orders of magnitude in magnetic fields of modern NMR spectrometers and even higher enhancements in low and ultra-low magnetic fields. It is based on the use of parahydrogen in catalytic hydrogenation reactions which, upon pairwise addition of the two H atoms of parahydrogen, can strongly enhance the NMR signals of reaction intermediates and products in solution. A recent advance in this field is the demonstration that PHIP can be observed not only in homogeneous hydrogenations but also in heterogeneous catalytic reactions. The use of heterogeneous catalysts for generating PHIP provides a number of significant advantages over the homogeneous processes, including the possibility to produce hyperpolarized gases, better control over the hydrogenation process, and the ease of separation of hyperpolarized fluids from the catalyst. The latter advantage is of paramount importance in light of the recent tendency toward utilization of hyperpolarized substances in in vivo spectroscopic and imaging applications of NMR. In addition, PHIP demonstrates the potential to become a useful tool for studying mechanisms of heterogeneous catalytic processes and for in situ studies of operating catalytic reactors. Here, the known examples of PHIP observations in heterogeneous reactions over immobilized transition metal complexes, supported metals, and some other types of heterogeneous catalysts are discussed and the applications of the technique for hypersensitive NMR imaging studies are presented.
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Affiliation(s)
- Kirill V Kovtunov
- International Tomography Center, SB RAS, 3A Institutskaya St, Novosibirsk, 630090, Russian Federation
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22
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Scholten JD, Leal BC, Dupont J. Transition Metal Nanoparticle Catalysis in Ionic Liquids. ACS Catal 2011. [DOI: 10.1021/cs200525e] [Citation(s) in RCA: 288] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jackson D. Scholten
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Avenida Bento Gonçalves, 9500 Porto Alegre,
91501-970 RS Brazil
| | - Bárbara Caroline Leal
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Avenida Bento Gonçalves, 9500 Porto Alegre,
91501-970 RS Brazil
| | - Jairton Dupont
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Avenida Bento Gonçalves, 9500 Porto Alegre,
91501-970 RS Brazil
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23
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Gong Q, Klankermayer J, Blümich B. Organometallic Complexes in Supported Ionic-Liquid Phase (SILP) Catalysts: A PHIP NMR Spectroscopy Study. Chemistry 2011; 17:13795-9. [DOI: 10.1002/chem.201100783] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 08/07/2011] [Indexed: 11/11/2022]
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24
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Ohtaka A, Teratani T, Fujii R, Ikeshita K, Kawashima T, Tatsumi K, Shimomura O, Nomura R. Linear Polystyrene-Stabilized Palladium Nanoparticles-Catalyzed C–C Coupling Reaction in Water. J Org Chem 2011; 76:4052-60. [DOI: 10.1021/jo200485q] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Atsushi Ohtaka
- Department of Applied Chemistry, Faculty of Engineering and ‡Nanomaterials and Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Osaka, Osaka 535-8585, Japan
| | - Takuto Teratani
- Department of Applied Chemistry, Faculty of Engineering and ‡Nanomaterials and Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Osaka, Osaka 535-8585, Japan
| | - Ryohei Fujii
- Department of Applied Chemistry, Faculty of Engineering and ‡Nanomaterials and Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Osaka, Osaka 535-8585, Japan
| | - Kanako Ikeshita
- Department of Applied Chemistry, Faculty of Engineering and ‡Nanomaterials and Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Osaka, Osaka 535-8585, Japan
| | - Takahiro Kawashima
- Department of Applied Chemistry, Faculty of Engineering and ‡Nanomaterials and Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Osaka, Osaka 535-8585, Japan
| | - Koichi Tatsumi
- Department of Applied Chemistry, Faculty of Engineering and ‡Nanomaterials and Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Osaka, Osaka 535-8585, Japan
| | - Osamu Shimomura
- Department of Applied Chemistry, Faculty of Engineering and ‡Nanomaterials and Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Osaka, Osaka 535-8585, Japan
| | - Ryôki Nomura
- Department of Applied Chemistry, Faculty of Engineering and ‡Nanomaterials and Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Osaka, Osaka 535-8585, Japan
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