1
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Zheng Z, Liu M, Wang X, Jiang W, Peng Q, Sun H, Chen Z. The experimental approach for the interleaved joint modulation of PHIP and NMR. J Chem Phys 2023; 159:184201. [PMID: 37937935 DOI: 10.1063/5.0173895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/18/2023] [Indexed: 11/09/2023] Open
Abstract
Nuclear spin hyperpolarization derived from parahydrogen is a technique for enhancing nuclear magnetic resonance (NMR) sensitivity. The key to hyperpolarization experiments is to achieve rapid transfer and detection to minimize relaxation losses, while also avoiding bubbles or turbulence to guarantee high spectral resolution. In this article, we describe an experimental approach for the interleaved joint modulation of parahydrogen-induced polarization and NMR. We provide schematic diagrams of parahydrogen-based polarizer with in situ high-pressure detection capability and low-field polarization transfer. This approach can help to control the experimental process and acquire experimental information, one example of which is the attainment of the highest hyperpolarization signal intensity at 3.6 s after closing the valve. The polarizer demonstrates in situ detection capability, allowing sample to be restabilized within 0.3 ± 0.1 s and high-resolution NMR sampling under a pressure of 3 bars. Moreover, it can transfer polarized samples from the polarization transfer field to the detection region of NMR within 1 ± 0.3 s for completing signal amplification by reversible exchange experiments.
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Affiliation(s)
- Zeyu Zheng
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005 Xiamen, China
| | - Min Liu
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005 Xiamen, China
| | - Xinchang Wang
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005 Xiamen, China
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, 361005 Xiamen, China
| | - Wenlong Jiang
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005 Xiamen, China
| | - Qiwei Peng
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005 Xiamen, China
| | - Huijun Sun
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005 Xiamen, China
| | - Zhong Chen
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005 Xiamen, China
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, 361005 Xiamen, China
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2
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Gyton M, Royle CG, Beaumont SK, Duckett SB, Weller AS. Mechanistic Insights into Molecular Crystalline Organometallic Heterogeneous Catalysis through Parahydrogen-Based Nuclear Magnetic Resonance Studies. J Am Chem Soc 2023; 145:2619-2629. [PMID: 36688560 PMCID: PMC9896567 DOI: 10.1021/jacs.2c12642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The heterogeneous solid-gas reactions of crystals of [Rh(L2)(propene)][BArF4] (1, L2 = tBu2PCH2CH2PtBu2) with H2 and propene, 1-butene, propyne, or 1-butyne are explored by gas-phase nuclear magnetic resonance (NMR) spectroscopy under batch conditions at 25 °C. The temporal evolution of the resulting parahydrogen-induced polarization (PHIP) effects measures catalytic flux and thus interrogates the efficiency of catalytic pairwise para-H2 transfer, speciation changes in the crystalline catalyst at the molecular level, and allows for high-quality single-scan 1H, 13C NMR gas-phase spectra for the products to be obtained, as well as 2D-measurements. Complex 1 reacts with H2 to form dimeric [Rh(L2)(H)(μ-H)]2[BArF4]2 (4), as probed using EXAFS; meanwhile, a single-crystal of 1 equilibrates NMR silent para-H2 with its NMR active ortho isomer, contemporaneously converting into 4, and 1 and 4 each convert para-H2 into ortho-H2 at different rates. Hydrogenation of propene using 1 and para-H2 results in very high initial polarization levels in propane (>85%). Strong PHIP was also detected in the hydrogenation products of 1-butene, propyne, and 1-butyne. With propyne, a competing cyclotrimerization deactivation process occurs to afford [Rh(tBu2PCH2CH2PtBu2)(1,3,4-Me3C6H3)][BArF4], while with 1-butyne, rapid isomerization of 1-butyne occurs to give a butadiene complex, which then reacts with H2 more slowly to form catalytically active 4. Surprisingly, the high PHIP hydrogenation efficiencies allow hyperpolarization effects to be seen when H2 is taken directly from a regular cylinder at 25 °C. Finally, changing the chelating phosphine to Cy2PCH2CH2PCy2 results in initial high polarization efficiencies for propene hydrogenation, but rapid quenching of the catalyst competes to form the zwitterion [Rh(Cy2PCH2CH2PCy2){η6-(CF3)2(C6H3)}BArF3].
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Affiliation(s)
- Matthew
R. Gyton
- Department
of Chemistry, University of York, York YO10 5DD, U.K.,Centre
for Hyperpolarisation in Magnetic Resonance, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K.
| | - Cameron G. Royle
- Department
of Chemistry, University of York, York YO10 5DD, U.K.,Department
of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
| | - Simon K. Beaumont
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - Simon B. Duckett
- Department
of Chemistry, University of York, York YO10 5DD, U.K.,Centre
for Hyperpolarisation in Magnetic Resonance, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K.,
| | - Andrew S. Weller
- Department
of Chemistry, University of York, York YO10 5DD, U.K.,
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3
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Du Y, Behera RK, Maligal-Ganesh RV, Chen M, Zhao TY, Huang W, Bowers CR. Mesoporous Silica Encapsulated Platinum-Tin Intermetallic Nanoparticles Catalyze Hydrogenation with an Unprecedented 20% Pairwise Selectivity for Parahydrogen Enhanced Nuclear Magnetic Resonance. J Phys Chem Lett 2022; 13:4125-4132. [PMID: 35506614 DOI: 10.1021/acs.jpclett.2c00581] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Supported noble metals offer key advantages over homogeneous catalysts for in vivo applications of parahydrogen-based hyperpolarization. However, their performance is compromised by randomization of parahydrogen spin order resulting from rapid hydrogen adatom diffusion. The diffusion on Pt surfaces can be suppressed by introduction of Sn to form Pt-Sn intermetallic phases. Herein, an unprecedented pairwise selectivity of 19.7 ± 1.1% in the heterogeneous hydrogenation of propyne using silica encapsulated Pt-Sn intermetallic nanoparticles is reported. This high level of selectivity exceeds that of all supported metal catalysts by at least a factor of 3. Moreover, the pairwise selectivity for alkyne hydrogenation is about 2 times higher than for alkene hydrogenation, an observation attributed to the higher coverage of the former and its effect on diffusion. Lastly, PtSn@mSiO2 nanoparticles exhibited improved coking resistance, and any loss of activity is shown to be fully reversible through high-temperature oxidation-reduction cycling.
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Affiliation(s)
- Yong Du
- Department of Chemistry and National High Magnetic Field Laboratory, University of Florida, Gainesville, Florida 32611, United States
| | - Ranjan K Behera
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | | | - Minda Chen
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Tommy Yunpu Zhao
- Department of Chemistry and National High Magnetic Field Laboratory, University of Florida, Gainesville, Florida 32611, United States
| | - Wenyu Huang
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Clifford R Bowers
- Department of Chemistry and National High Magnetic Field Laboratory, University of Florida, Gainesville, Florida 32611, United States
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4
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Salnikov OG, Burueva DB, Kovtunova LM, Bukhtiyarov VI, Kovtunov KV, Koptyug IV. Mechanisms of Methylenecyclobutane Hydrogenation over Supported Metal Catalysts Studied by Parahydrogen-Induced Polarization Technique. Chemphyschem 2022; 23:e202200072. [PMID: 35099100 DOI: 10.1002/cphc.202200072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Indexed: 11/08/2022]
Abstract
In this work the mechanism of methylenecyclobutane hydrogenation over titania-supported Rh, Pt and Pd catalysts was investigated using parahydrogen-induced polarization (PHIP) technique. It was found that methylenecyclobutane hydrogenation leads to formation of a mixture of reaction products including cyclic (1-methylcyclobutene, methylcyclobutane), linear (1-pentene, cis-2-pentene, trans-2-pentene, pentane) and branched (isoprene, 2-methyl-1-butene, 2-methyl-2-butene, isopentane) compounds. Generally, at lower temperatures (150-350 °C) the major reaction product was methylcyclobutane while higher temperature of 450 °C favors formation of branched products isoprene, 2-methyl-1-butene and 2-methyl-2-butene. PHIP effects were detected for all reaction products except methylenecyclobutane isomers 1-methylcyclobutene and isoprene implying that the corresponding compounds can incorporate two atoms from the same parahydrogen molecule in a pairwise manner in the course of the reaction in particular positions. The mechanisms were proposed for the formation of these reaction products based on PHIP results.
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Affiliation(s)
- Oleg G Salnikov
- International Tomography Center SB RAS, Laboratory of Magnetic Resonance Microimaging, 3A Institutskaya street, 630090, Novosibirsk, RUSSIAN FEDERATION
| | - Dudari B Burueva
- International Tomography Center SB RAS: Mezdunarodnyj tomograficeskij centr SO RAN, Laboratory of magnetic resonance microimaging, 630090, Novosibirsk, RUSSIAN FEDERATION
| | - Larisa M Kovtunova
- Boreskov Institute of Catalysis SB RAS: FGBUN Institut kataliza im G K Boreskova Sibirskogo otdelenia Rossijskoj akademii nauk, Department of physico-chemical methods of research, Novosibirsk, RUSSIAN FEDERATION
| | - Valerii I Bukhtiyarov
- Boreskov Institute of Catalysis SB RAS: FGBUN Institut kataliza im G K Boreskova Sibirskogo otdelenia Rossijskoj akademii nauk, Administration, Novosibirsk, RUSSIAN FEDERATION
| | - Kirill V Kovtunov
- International Tomography Center SB RAS: Mezdunarodnyj tomograficeskij centr SO RAN, Laboratory of magnetic resonance microimaging, Novosibirsk, RUSSIAN FEDERATION
| | - Igor V Koptyug
- International Tomography Center SB RAS: Mezdunarodnyj tomograficeskij centr SO RAN, Laboratory of magnetic resonance microimaging, Novosibirsk, RUSSIAN FEDERATION
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5
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Schmidt AB, Bowers CR, Buckenmaier K, Chekmenev EY, de Maissin H, Eills J, Ellermann F, Glöggler S, Gordon JW, Knecht S, Koptyug IV, Kuhn J, Pravdivtsev AN, Reineri F, Theis T, Them K, Hövener JB. Instrumentation for Hydrogenative Parahydrogen-Based Hyperpolarization Techniques. Anal Chem 2022; 94:479-502. [PMID: 34974698 PMCID: PMC8784962 DOI: 10.1021/acs.analchem.1c04863] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Andreas B. Schmidt
- Department of Radiology – Medical Physics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstr. 5a, Freiburg 79106, Germany
- German Cancer Consortium (DKTK), partner site Freiburg and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, Heidelberg 69120, Germany
| | - C. Russell Bowers
- Department of Chemistry, University of Florida, 2001 Museum Road, Gainesville, Florida 32611, USA
- National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, Florida 32310, USA
| | - Kai Buckenmaier
- High-Field Magnetic Resonance Center, Max Planck Institute for Biological Cybernetics, Max-Planck-Ring 11, 72076, Tübingen, Germany
| | - Eduard Y. Chekmenev
- Intergrative Biosciences (Ibio), Department of Chemistry, Karmanos Cancer Institute (KCI), Wayne State University, 5101 Cass Ave, Detroit, MI 48202, United States
- Russian Academy of Sciences (RAS), Leninskiy Prospect, 14, 119991 Moscow, Russia
| | - Henri de Maissin
- Department of Radiology – Medical Physics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstr. 5a, Freiburg 79106, Germany
- German Cancer Consortium (DKTK), partner site Freiburg and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, Heidelberg 69120, Germany
| | - James Eills
- Institute for Physics, Johannes Gutenberg University, D-55090 Mainz, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Helmholtz-Institut Mainz, 55128 Mainz, Germany
| | - Frowin Ellermann
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Stefan Glöggler
- NMR Signal Enhancement Group Max Planck Institutefor Biophysical Chemistry Am Fassberg 11, 37077 Göttingen, Germany
- Center for Biostructural Imaging of Neurodegeneration of UMG Von-Siebold-Str. 3A, 37075 Göttingen, Germany
| | - Jeremy W. Gordon
- Department of Radiology & Biomedical Imaging, University of California San Francisco, 185 Berry St., San Francisco, CA, 94158, USA
| | | | - Igor V. Koptyug
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk 630090, Russia
| | - Jule Kuhn
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Andrey N. Pravdivtsev
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Francesca Reineri
- Dept. Molecular Biotechnology and Health Sciences, Via Nizza 52, University of Torino, Italy
| | - Thomas Theis
- Departments of Chemistry, Physics and Biomedical Engineering, North Carolina State University, Raleigh, NC, 27695, USA
| | - Kolja Them
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Jan-Bernd Hövener
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
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6
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Pei Y, Chen M, Zhong X, Zhao TY, Ferrer MJ, Maligal-Ganesh RV, Ma T, Zhang B, Qi Z, Zhou L, Bowers CR, Liu C, Huang W. Pairwise semi-hydrogenation of alkyne to cis-alkene on platinum-tin intermetallic compounds. NANOSCALE 2020; 12:8519-8524. [PMID: 32242595 DOI: 10.1039/d0nr00920b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The molecular basis for the high cis-alkene selectivity over intermetallic PtSn for alkyne semi-hydrogenation is demonstrated. Unlike the universal assumption that the bimetallic surface is saturated with atomic hydrogen, molecular hydrogen has a higher barrier for dissociative adsorption on intermetallic PtSn due to the deficiency of Pt three-fold sites. The resulting molecular behavior of adsorbed hydrogen on intermetallic PtSn nanoparticles leads to pairwise-hydrogenation of three alkynes to the corresponding cis-alkenes, satisfying both high stereoselectivity and high chemoselectivity.
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Affiliation(s)
- Yuchen Pei
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA.
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8
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Tijssen KCH, van Weerdenburg BJA, Zhang H, Janssen JWG, Feiters MC, van Bentum PJM, Kentgens APM. Monitoring Heterogeneously Catalyzed Hydrogenation Reactions at Elevated Pressures Using In-Line Flow NMR. Anal Chem 2019; 91:12636-12643. [PMID: 31508941 PMCID: PMC6796828 DOI: 10.1021/acs.analchem.9b00895] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
We present a novel setup that can be used for the in-line monitoring of solid-catalyzed gas-liquid reactions. The method combines the high sensitivity and resolution of a stripline NMR detector with a microfluidic network that can withstand elevated pressures. In our setup we dissolve hydrogen gas in the solvent, then flow it with the added substrate through a catalyst cartridge, and finally flow the reaction mixture directly through the stripline NMR detector. The method is quantitative and can be used to determine the solubility of hydrogen gas in liquids; it allows in-line monitoring of hydrogenation reactions and can be used to determine the reaction kinetics of these reactions. In this work, as proof of concept we demonstrate the optimization of the Pd-catalyzed hydrogenation reactions of styrene, phenylacetylene, cyclohexene, and hex-5-en-2-one in a microfluidic context.
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Affiliation(s)
| | | | - Hainan Zhang
- Mesoscale Chemical Systems, Mesa+ Institute for Nanotechnology , University of Twente , Enschede , The Netherlands
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9
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Hövener JB, Pravdivtsev AN, Kidd B, Bowers CR, Glöggler S, Kovtunov KV, Plaumann M, Katz-Brull R, Buckenmaier K, Jerschow A, Reineri F, Theis T, Shchepin RV, Wagner S, Bhattacharya P, Zacharias NM, Chekmenev EY. Parahydrogen-Based Hyperpolarization for Biomedicine. Angew Chem Int Ed Engl 2018; 57:11140-11162. [PMID: 29484795 PMCID: PMC6105405 DOI: 10.1002/anie.201711842] [Citation(s) in RCA: 226] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/14/2018] [Indexed: 12/22/2022]
Abstract
Magnetic resonance (MR) is one of the most versatile and useful physical effects used for human imaging, chemical analysis, and the elucidation of molecular structures. However, its full potential is rarely used, because only a small fraction of the nuclear spin ensemble is polarized, that is, aligned with the applied static magnetic field. Hyperpolarization methods seek other means to increase the polarization and thus the MR signal. A unique source of pure spin order is the entangled singlet spin state of dihydrogen, parahydrogen (pH2 ), which is inherently stable and long-lived. When brought into contact with another molecule, this "spin order on demand" allows the MR signal to be enhanced by several orders of magnitude. Considerable progress has been made in the past decade in the area of pH2 -based hyperpolarization techniques for biomedical applications. It is the goal of this Review to provide a selective overview of these developments, covering the areas of spin physics, catalysis, instrumentation, preparation of the contrast agents, and applications.
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Affiliation(s)
- Jan-Bernd Hövener
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Andrey N Pravdivtsev
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Bryce Kidd
- Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, IL, 62901, USA
| | - C Russell Bowers
- Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Stefan Glöggler
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077, Göttingen, Germany
- Center for Biostructural Imaging of Neurodegeneration, Von-Siebold-Strasse 3A, 37075, Göttingen, Germany
| | - Kirill V Kovtunov
- International Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Department of Natural Sciences, Novosibirsk State University, Pirogova St. 2, 630090, Novosibirsk, Russia
| | - Markus Plaumann
- Department of Biometry and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Rachel Katz-Brull
- Department of Radiology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Kai Buckenmaier
- Magnetic resonance center, Max Planck Institute for Biological Cybernetics, Tuebingen, Germany
| | - Alexej Jerschow
- Department of Chemistry, New York University, 100 Washington Sq. East, New York, NY, 10003, USA
| | - Francesca Reineri
- Department of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino, Italy
| | - Thomas Theis
- Department of Chemistry & Department of Physics, Duke University, Durham, NC, 27708, USA
| | - Roman V Shchepin
- Vanderbilt University Institute of Imaging Science (VUIIS), Department of Radiology and Radiological Sciences, 1161 21st Ave South, MCN AA-1105, Nashville, TN, 37027, USA
| | - Shawn Wagner
- Biomedical Imaging Research Institute, Cedars Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Pratip Bhattacharya
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Niki M Zacharias
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Eduard Y Chekmenev
- Russian Academy of Sciences (RAS), Leninskiy Prospekt 14, Moscow, 119991, Russia
- Department of Chemistry, Karmanos Cancer Institute (KCI) and Integrative Biosciences (Ibio), Wayne State University, Detroit, MI, 48202, USA
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10
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Hövener J, Pravdivtsev AN, Kidd B, Bowers CR, Glöggler S, Kovtunov KV, Plaumann M, Katz‐Brull R, Buckenmaier K, Jerschow A, Reineri F, Theis T, Shchepin RV, Wagner S, Bhattacharya P, Zacharias NM, Chekmenev EY. Parawasserstoff‐basierte Hyperpolarisierung für die Biomedizin. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711842] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jan‐Bernd Hövener
- Sektion Biomedizinische Bildgebung, Molecular Imaging North Competence Center (MOIN CC) Klinik für Radiologie und Neuroradiologie Universitätsklinikum Schleswig-Holstein, Christian-Albrechts-Universität Kiel Am Botanischen Garten 14 24118 Kiel Deutschland
| | - Andrey N. Pravdivtsev
- Sektion Biomedizinische Bildgebung, Molecular Imaging North Competence Center (MOIN CC) Klinik für Radiologie und Neuroradiologie Universitätsklinikum Schleswig-Holstein, Christian-Albrechts-Universität Kiel Am Botanischen Garten 14 24118 Kiel Deutschland
| | - Bryce Kidd
- Department of Chemistry and Biochemistry Southern Illinois University Carbondale IL 62901 USA
| | - C. Russell Bowers
- Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Stefan Glöggler
- Max Planck-Institut für Biophysikalische Chemie Am Fassberg 11 37077 Göttingen Deutschland
- Center for Biostructural Imaging of Neurodegeneration Von-Siebold-Straße 3A 37075 Göttingen Deutschland
| | - Kirill V. Kovtunov
- International Tomography Center SB RAS 630090 Novosibirsk Russland
- Department of Natural Sciences Novosibirsk State University Pirogova St. 2 630090 Novosibirsk Russland
| | - Markus Plaumann
- Institut für Biometrie und Medizinische Informatik Otto-von-Guericke-Universität Magdeburg Leipziger Straße 44 39120 Magdeburg Deutschland
| | - Rachel Katz‐Brull
- Department of Radiology Hadassah-Hebrew University Medical Center Jerusalem Israel
| | - Kai Buckenmaier
- Magnetresonanz-Zentrum Max Planck-Institut für biologische Kybernetik Tübingen Deutschland
| | - Alexej Jerschow
- Department of Chemistry New York University 100 Washington Sq. East New York NY 10003 USA
| | - Francesca Reineri
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 Torino Italien
| | - Thomas Theis
- Department of Chemistry & Department of Physics Duke University Durham NC 27708 USA
| | - Roman V. Shchepin
- Vanderbilt University Institute of Imaging Science (VUIIS) Department of Radiology and Radiological Sciences 1161 21st Ave South, MCN AA-1105 Nashville TN 37027 USA
| | - Shawn Wagner
- Biomedical Imaging Research Institute Cedars Sinai Medical Center Los Angeles CA 90048 USA
| | - Pratip Bhattacharya
- Department of Cancer Systems Imaging University of Texas MD Anderson Cancer Center Houston TX 77030 USA
| | - Niki M. Zacharias
- Department of Cancer Systems Imaging University of Texas MD Anderson Cancer Center Houston TX 77030 USA
| | - Eduard Y. Chekmenev
- Vanderbilt University Institute of Imaging Science (VUIIS) Department of Radiology and Radiological Sciences 1161 21st Ave South, MCN AA-1105 Nashville TN 37027 USA
- Russian Academy of Sciences (RAS) Leninskiy Prospekt 14 Moscow 119991 Russland
- Department of Chemistry, Karmanos Cancer Institute (KCI) and Integrative Biosciences (Ibio) Wayne State University Detroit MI 48202 USA
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11
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De S, Babak MV, Hülsey MJ, Ang WH, Yan N. Designed Precursor for the Controlled Synthesis of Highly Active Atomic and Sub-nanometric Platinum Catalysts on Mesoporous Silica. Chem Asian J 2018; 13:1053-1059. [DOI: 10.1002/asia.201800125] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 02/20/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Sudipta De
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore Singapore
| | - Maria V. Babak
- Department of Chemistry; National University of Singapore; 3 Science Drive 2 117543 Singapore Singapore
| | - Max J. Hülsey
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore Singapore
| | - Wee Han Ang
- Department of Chemistry; National University of Singapore; 3 Science Drive 2 117543 Singapore Singapore
| | - Ning Yan
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore Singapore
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12
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Salnikov OG, Kovtunova LM, Skovpin IV, Bukhtiyarov VI, Kovtunov KV, Koptyug IV. Mechanistic Insight into the Heterogeneous Hydrogenation of Furan Derivatives with the use of Parahydrogen. ChemCatChem 2018. [DOI: 10.1002/cctc.201701653] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Oleg G. Salnikov
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center, SB RAS; 3A Institutskaya st. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Larisa M. Kovtunova
- Laboratory of Surface Science; Boreskov Institute of Catalysis, SB RAS; 5 Acad. Lavrentiev pr. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Ivan V. Skovpin
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center, SB RAS; 3A Institutskaya st. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Valerii I. Bukhtiyarov
- Laboratory of Surface Science; Boreskov Institute of Catalysis, SB RAS; 5 Acad. Lavrentiev pr. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Kirill V. Kovtunov
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center, SB RAS; 3A Institutskaya st. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Igor V. Koptyug
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center, SB RAS; 3A Institutskaya st. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
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Burueva DB, Kovtunov KV, Bukhtiyarov AV, Barskiy DA, Prosvirin IP, Mashkovsky IS, Baeva GN, Bukhtiyarov VI, Stakheev AY, Koptyug IV. Selective Single-Site Pd−In Hydrogenation Catalyst for Production of Enhanced Magnetic Resonance Signals using Parahydrogen. Chemistry 2018; 24:2547-2553. [DOI: 10.1002/chem.201705644] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Indexed: 01/19/2023]
Affiliation(s)
- Dudari B. Burueva
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center; SB RAS; 3A Institutskaya St. 630090 Novosibirsk Russia
- Novosibirsk State University; 2 Pirogova St. 630090 Novosibirsk Russia
| | - Kirill V. Kovtunov
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center; SB RAS; 3A Institutskaya St. 630090 Novosibirsk Russia
- Novosibirsk State University; 2 Pirogova St. 630090 Novosibirsk Russia
| | - Andrey V. Bukhtiyarov
- Boreskov Institute of Catalysis; SB RAS; 5 Acad. Lavrentiev Pr. 630090 Novosibirsk Russia
| | - Danila A. Barskiy
- Department of Chemistry; University of California at Berkeley; Berkeley CA 94720-3220 USA
| | - Igor P. Prosvirin
- Boreskov Institute of Catalysis; SB RAS; 5 Acad. Lavrentiev Pr. 630090 Novosibirsk Russia
- Novosibirsk State University; 2 Pirogova St. 630090 Novosibirsk Russia
| | - Igor S. Mashkovsky
- N.D. Zelinsky Institute of Organic Chemistry; RAS; 47 Leninsky Pr. 119991 Moscow Russia
| | - Galina N. Baeva
- N.D. Zelinsky Institute of Organic Chemistry; RAS; 47 Leninsky Pr. 119991 Moscow Russia
| | - Valerii I. Bukhtiyarov
- Boreskov Institute of Catalysis; SB RAS; 5 Acad. Lavrentiev Pr. 630090 Novosibirsk Russia
| | | | - Igor V. Koptyug
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center; SB RAS; 3A Institutskaya St. 630090 Novosibirsk Russia
- Novosibirsk State University; 2 Pirogova St. 630090 Novosibirsk Russia
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry and
UCR Center for Catalysis, University of California, Riverside, California 92521, United States
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15
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Salnikov OG, Burueva DB, Gerasimov EY, Bukhtiyarov AV, Khudorozhkov AK, Prosvirin IP, Kovtunova LM, Barskiy DA, Bukhtiyarov VI, Kovtunov KV, Koptyug IV. The effect of oxidative and reductive treatments of titania-supported metal catalysts on the pairwise hydrogen addition to unsaturated hydrocarbons. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.02.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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16
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Obenaus U, Althoff-Ospelt G, Lang S, Himmelmann R, Hunger M. Separation of Anti-Phase Signals Due to Parahydrogen Induced Polarization via 2D Nutation NMR Spectroscopy. Chemphyschem 2017; 18:455-458. [PMID: 28111867 DOI: 10.1002/cphc.201601227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/15/2016] [Indexed: 11/06/2022]
Abstract
The present work introduces a novel method for the selective detection of 1 H NMR anti-phase signals caused by the pairwise incorporation of parahydrogen into olefins on noble-metal-containing catalysts. Via a two-dimensional (2D) nutation NMR experiment, the anti-phase signals of hyperpolarized 1 H nuclei are separated due to their double nutation frequency compared to that of thermally polarized 1 H nuclei. For demonstrating this approach, parahydrogen induced polarization (PHIP) was achieved via the hydrogenation of propene with parahydrogen on platinum-containing silica and investigated by in situ 1 H MAS NMR spectroscopy under continuous-flow conditions, that is, the hydrogenation reaction was performed inside the magnet of the NMR spectrometer. The 2D nutation NMR experiment described in the present work is useful for the separation of overlapping anti-phase and in-phase signals due to hyperpolarized and thermally polarized 1 H nuclei, respectively, which is important for research in the field of heterogeneous catalysis.
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Affiliation(s)
- Utz Obenaus
- Institute of Chemical Technology, University of Stuttgart, 70550, Stuttgart, Germany
| | - Gerhard Althoff-Ospelt
- Solid-State NMR Application, Bruker BioSpin GmbH, Silberstreifen 4, 76287, Rheinstetten, Germany
| | - Swen Lang
- Institute of Chemical Technology, University of Stuttgart, 70550, Stuttgart, Germany
| | - Robin Himmelmann
- Institute of Chemical Technology, University of Stuttgart, 70550, Stuttgart, Germany
| | - Michael Hunger
- Institute of Chemical Technology, University of Stuttgart, 70550, Stuttgart, Germany
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17
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Barskiy DA, Salnikov OG, Romanov AS, Feldman MA, Coffey AM, Kovtunov KV, Koptyug IV, Chekmenev EY. NMR Spin-Lock Induced Crossing (SLIC) dispersion and long-lived spin states of gaseous propane at low magnetic field (0.05T). JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2017; 276:78-85. [PMID: 28152435 PMCID: PMC5452975 DOI: 10.1016/j.jmr.2017.01.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/17/2017] [Accepted: 01/19/2017] [Indexed: 05/22/2023]
Abstract
When parahydrogen reacts with propylene in low magnetic fields (e.g., 0.05T), the reaction product propane develops an overpopulation of pseudo-singlet nuclear spin states. We studied how the Spin-Lock Induced Crossing (SLIC) technique can be used to convert these pseudo-singlet spin states of hyperpolarized gaseous propane into observable magnetization and to detect 1H NMR signal directly at 0.05T. The theoretical simulation and experimental study of the NMR signal dependence on B1 power (SLIC amplitude) exhibits a well-resolved dispersion, which is induced by the spin-spin couplings in the eight-proton spin system of propane. We also measured the exponential decay time constants (TLLSS or TS) of these pseudo-singlet long-lived spin states (LLSS) by varying the time between hyperpolarized propane production and SLIC detection. We have found that, on average, TS is approximately 3 times longer than the corresponding T1 value under the same conditions in the range of pressures studied (up to 7.6atm). Moreover, TS may exceed 13s at pressures above 7atm in the gas phase. These results are in agreement with the previous reports, and they corroborate a great potential of long-lived hyperpolarized propane as an inhalable gaseous contrast agent for lung imaging and as a molecular tracer to study porous media using low-field NMR and MRI.
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Affiliation(s)
- Danila A Barskiy
- Vanderbilt University Institute of Imaging Science (VUIIS), Nashville, TN 37232, USA; Department of Radiology and Radiological Sciences, Vanderbilt University, Nashville, TN 37232, USA.
| | - Oleg G Salnikov
- International Tomography Center SB RAS, 3A Institutskaya St., Novosibirsk, Russia; Novosibirsk State University, 2 Pirogova St., Novosibirsk, Russia
| | - Alexey S Romanov
- International Tomography Center SB RAS, 3A Institutskaya St., Novosibirsk, Russia; Novosibirsk State University, 2 Pirogova St., Novosibirsk, Russia
| | - Matthew A Feldman
- Vanderbilt University Institute of Imaging Science (VUIIS), Nashville, TN 37232, USA; Department of Radiology and Radiological Sciences, Vanderbilt University, Nashville, TN 37232, USA
| | - Aaron M Coffey
- Vanderbilt University Institute of Imaging Science (VUIIS), Nashville, TN 37232, USA; Department of Radiology and Radiological Sciences, Vanderbilt University, Nashville, TN 37232, USA
| | - Kirill V Kovtunov
- International Tomography Center SB RAS, 3A Institutskaya St., Novosibirsk, Russia; Novosibirsk State University, 2 Pirogova St., Novosibirsk, Russia
| | - Igor V Koptyug
- International Tomography Center SB RAS, 3A Institutskaya St., Novosibirsk, Russia; Novosibirsk State University, 2 Pirogova St., Novosibirsk, Russia
| | - Eduard Y Chekmenev
- Vanderbilt University Institute of Imaging Science (VUIIS), Nashville, TN 37232, USA; Department of Radiology and Radiological Sciences, Vanderbilt University, Nashville, TN 37232, USA; Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232, USA; Vanderbilt Ingram Cancer Center (VICC), Vanderbilt University, Nashville, TN 37232, USA; Russian Academy of Sciences, Moscow, Russia.
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Salnikov OG, Liu HJ, Fedorov A, Burueva DB, Kovtunov KV, Copéret C, Koptyug IV. Pairwise hydrogen addition in the selective semihydrogenation of alkynes on silica-supported Cu catalysts. Chem Sci 2016; 8:2426-2430. [PMID: 28451349 PMCID: PMC5369404 DOI: 10.1039/c6sc05276b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 12/18/2016] [Indexed: 12/21/2022] Open
Abstract
Mechanistic insight into the semihydrogenation of 1-butyne and 2-butyne on Cu nanoparticles supported on partially dehydroxylated silica (Cu/SiO2-700) was obtained using parahydrogen.
Mechanistic insight into the semihydrogenation of 1-butyne and 2-butyne on Cu nanoparticles supported on partially dehydroxylated silica (Cu/SiO2-700) was obtained using parahydrogen. Hydrogenation of 1-butyne over Cu/SiO2-700 yielded 1-butene with ≥97% selectivity. The surface modification of this catalyst with tricyclohexylphosphine (PCy3) increased the selectivity to 1-butene up to nearly 100%, although at the expense of reduced catalytic activity. Similar trends were observed in the hydrogenation of 2-butyne, where Cu/SiO2-700 provided a selectivity to 2-butene in the range of 72–100% depending on the reaction conditions, while the catalyst modified with PCy3 again demonstrated nearly 100% selectivity. Parahydrogen-induced polarization effects observed in hydrogenation reactions catalyzed by copper-based catalysts demonstrate the viability of pairwise hydrogen addition over these catalysts. Contribution of pairwise hydrogen addition to 1-butyne was estimated to be at least 0.2–0.6% for unmodified Cu/SiO2-700 and ≥2.7% for Cu/SiO2-700 modified with PCy3, highlighting the effect of surface modification with the tricyclohexylphosphine ligand.
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Affiliation(s)
- Oleg G Salnikov
- International Tomography Center , SB RAS , 3A Institutskaya St. , 630090 Novosibirsk , Russia . .,Novosibirsk State University , 2 Pirogova St. , 630090 Novosibirsk , Russia
| | - Hsueh-Ju Liu
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , CH-8093 Zürich , Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , CH-8093 Zürich , Switzerland
| | - Dudari B Burueva
- International Tomography Center , SB RAS , 3A Institutskaya St. , 630090 Novosibirsk , Russia . .,Novosibirsk State University , 2 Pirogova St. , 630090 Novosibirsk , Russia
| | - Kirill V Kovtunov
- International Tomography Center , SB RAS , 3A Institutskaya St. , 630090 Novosibirsk , Russia . .,Novosibirsk State University , 2 Pirogova St. , 630090 Novosibirsk , Russia
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , CH-8093 Zürich , Switzerland
| | - Igor V Koptyug
- International Tomography Center , SB RAS , 3A Institutskaya St. , 630090 Novosibirsk , Russia . .,Novosibirsk State University , 2 Pirogova St. , 630090 Novosibirsk , Russia
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Abstract
Abstract
Generating parahydrogen-induced polarization (PHIP) of nuclear spins with immobilized transition metal complexes as hydrogenation catalysts allows one to produce pure hyperpolarized substances, which can open new revolutionary perspectives for PHIP applications. A major drawback of immobilized complexes is their low stability under reaction conditions. In the present work we studied an immobilized iridium complex, Ir/SiO2
P, synthesized by a covalent anchoring of Vaska’s complex on phospine-modified silica gel. This complex was used to obtain hyperpolarized gasses in the gas phase hydrogenation of propene, propyne and 1-butyne with parahydrogen in PASADENA and ALTADENA experiments. It was found that, in contrast to other immobilized complexes, Ir/SiO2
P is stable under reaction conditions at up to 140°C, and the reduction of iridium does not occur according to XPS analysis. Moreover, the application of Ir/SiO2
P catalyst allowed us to generate continuous flow of hyperpolarized propene and 1-butene with (300–500)-fold NMR signal enhancement which is significantly higher than commonly observed for most supported metal catalysts. The shape of polarized propene signals in PASADENA experiment has indicated that parahydrogen addition to propyne occurs non-stereospecifically, i.e. PHIP was observed for all protons of the vinyl fragment of propene. The analysis of the polarized signals has shown that syn pairwise addition dominates, which was confirmed by spectra simulations. It was found that storage of Ir/SiO2
P under Ar atmosphere leads to a decrease in PHIP amplitude and an increase in the activity of the catalyst. This observation is discussed in terms of the interaction of Ir/SiO2
P with trace amounts of oxygen in Ar, leading to partial oxidation of triphenylphosphine ligand to triphenylphosphine oxide accompanied by the activation of the immobilized complex. It was also found that the interaction of Ir/SiO2
P with alkenes likely leads to formation of stable monohydride complexes, decreasing the production of PHIP in hydrogenations. At the same time, stable substrate complexes are likely formed in alkyne hydrogenations, leading to a significant decrease in the monohydride complex formation and to an increased production of PHIP.
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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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21
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Zhao EW, Xin Y, Hagelin-Weaver HE, Bowers CR. Semihydrogenation of Propyne over Cerium Oxide Nanorods, Nanocubes, and Nano-Octahedra: Facet-Dependent Parahydrogen-Induced Polarization. ChemCatChem 2016. [DOI: 10.1002/cctc.201600270] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Evan W. Zhao
- Department of Chemistry; University of Florida; Gainesville FL 32611 USA
| | - Yan Xin
- National High Magnetic Field Lab; Florida State University; Tallahassee FL 32310 USA
| | | | - Clifford R. Bowers
- Department of Chemistry; University of Florida; Gainesville FL 32611 USA
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