Low-Cost High-Pressure Clinical-Scale 50% Parahydrogen Generator Using Liquid Nitrogen at 77 K Full article
Journal |
Analytical Chemistry
ISSN: 0003-2700 , E-ISSN: 1520-6882 |
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Output data | Year: 2021, Volume: 93, Number: 24, Pages: 8476–8483 Pages count : 8 DOI: 10.1021/acs.analchem.1c00716 | ||||||||||||||||||||||||
Tags | Liquids, Copper, Catalysts, Nuclear magnetic resonance spectroscopy, Polarization | ||||||||||||||||||||||||
Authors |
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Affiliations |
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Funding (13)
1 | National Science Foundation | CHE-1416268 |
2 | National Science Foundation | CHE-1416432 |
3 | National Science Foundation | CHE-1905341 |
4 | National Science Foundation | CHE-1904780 |
5 | United States Department of Defense | W81XWH-15-1-0271 |
6 | United States Department of Defense | W81XWH-15-1-0272 |
7 | National Institutes of Health | 1R21CA220137 |
8 | National Institute of Biomedical Imaging and Bioengineering | 1R01EB029829 |
9 | National Institutes of Health | 1R21HL154032-01 |
10 | Ministry of Science and Higher Education of the Russian Federation | 075-15-2020-779 |
11 | United States Department of Defense | W81XWH-20-10576 |
12 | United States Department of Defense | W81XWH-20-10578 |
13 | National Institutes of Health | HHSN261200800001E |
Abstract:
We report on a robust and low-cost parahydrogen generator design employing liquid nitrogen as a coolant. The core of the generator consists of catalyst-filled spiral copper tubing, which can be pressurized to 35 atm. Parahydrogen fraction >48% was obtained at 77 K with three nearly identical generators using paramagnetic hydrated iron oxide catalysts. Parahydrogen quantification was performed on the fly via benchtop NMR spectroscopy to monitor the signal from residual orthohydrogen–parahydrogen is NMR silent. This real-time quantification approach was also used to evaluate catalyst activation at up to 1.0 standard liter per minute flow rate. The reported inexpensive device can be employed for a wide range of studies employing parahydrogen as a source of nuclear spin hyperpolarization. To this end, we demonstrate the utility of this parahydrogen generator for hyperpolarization of concentrated sodium [1-13C]pyruvate, a metabolic contrast agent under investigation in numerous clinical trials. The reported pilot optimization of SABRE-SHEATH (signal amplification by reversible exchange–shield enables alignment transfer to heteronuclei) hyperpolarization yielded 13C signal enhancement of over 14,000-fold at a clinically relevant magnetic field of 1 T corresponding to approximately 1.2% 13C polarization—if near 100% parahydrogen would have been employed, the reported value would be tripled to 13C polarization of 3.5%.
Cite:
Chapman B.
, Joalland B.
, Meersman C.
, Ettedgui J.
, Swenson R.E.
, Krishna M.C.
, Nikolaou P.
, Kovtunov K.V.
, Salnikov O.G.
, Koptyug I.V.
, Gemeinhardt M.E.
, Goodson B.M.
, Shchepin R.V.
, Chekmenev E.Y.
Low-Cost High-Pressure Clinical-Scale 50% Parahydrogen Generator Using Liquid Nitrogen at 77 K
Analytical Chemistry. 2021. V.93. N24. P.8476–8483. DOI: 10.1021/acs.analchem.1c00716 WOS Scopus РИНЦ AN PMID OpenAlex
Low-Cost High-Pressure Clinical-Scale 50% Parahydrogen Generator Using Liquid Nitrogen at 77 K
Analytical Chemistry. 2021. V.93. N24. P.8476–8483. DOI: 10.1021/acs.analchem.1c00716 WOS Scopus РИНЦ AN PMID OpenAlex
Dates:
Submitted: | Feb 16, 2021 |
Accepted: | May 27, 2021 |
Published online: | Jun 8, 2021 |
Published print: | Jun 22, 2021 |
Identifiers:
Web of science: | WOS:000665642500014 |
Scopus: | 2-s2.0-85108716669 |
Elibrary: | 46844491 |
Chemical Abstracts: | 2021:1249827 |
PMID: | 34102835 |
OpenAlex: | W3172259887 |