Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 117, Issue 44, Pages 22887-22893Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp407348r
Keywords
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Funding
- RFBR [11-03-00248-a, 12-03-00403-a, 12-03-31386-mol-a]
- RAS [5.1.1]
- SB RAS [60, 61, 57, 122]
- program of support of leading scientific schools [NSh-2429.2012.3]
- Council on Grants of the President of the Russian Federation [MK-4391.2013.3]
- Russian Government [11.G34.31.0045]
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It is demonstrated that hyperpolarized catalyst-free gases can be produced in a gas-liquid biphasic hydrogenation with parahydrogen using a dissolved catalyst and gaseous reactants. The reaction product is shown to return to the gas phase while retaining a substantial level of nuclear spin hyperpolarization, providing a complete separation of the hyperpolarized substance from the catalyst. The approaches based on biphasic and heterogeneous hydrogenations are shown to be suitable for producing hyperpolarization in a continuous mode. Subsequent gas dissolution can be added to yield solutions of hyperpolarized substances. Extension to a broader range of hyperpolarized substances is shown to be possible based on the hydrogenation of liquid vapors.
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