Evidence map›Paper›PMID 34102835›Full record

ArticleAnalytical chemistry2021

Low-Cost High-Pressure Clinical-Scale 50% Parahydrogen Generator Using Liquid Nitrogen at 77 K.

Benjamin Chapman, Baptiste Joalland, Collier Meersman, Jessica Ettedgui, Rolf E Swenson, Murali C Krishna, Panayiotis Nikolaou, Kirill V Kovtunov, Oleg G Salnikov, Igor V Koptyug and 4 more

Abstract read
In one paragraph

Article in Analytical chemistry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed.

  1. Article
  2. Article
  3. AutomatedAnalytical chemistry · 2026
    Article
  4. Review
  5. Multidimensional pH-Temperature Mapping of SABRE-SHEATHThe journal of physical chemistry. B · 2025
    Article
  6. The journal of physical chemistry. B · 2025
    Article
  7. Article
  8. SABRE Ir-IMes Catalysis for the Masses.Molecules (Basel, Switzerland) · 2025
    Article
  9. Review
  10. Review
  11. Hyphenation of 2D NMR With Hydrogenative PHIP.Magnetic resonance in chemistry : MRC · 2025
    Article
  12. Theranostics · 2025
    Article
  13. In vivo Metabolic Sensing of Hyperpolarized [1-Angewandte Chemie (International ed. in English) · 2024
    Article
  14. Article
  15. Article
  16. Real-Time Pyruvate Chemical Conversion Monitoring Enabled by PHIP.Journal of the American Chemical Society · 2023
    Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors.

Benjamin ChapmanDepartment of Materials and Metallurgical Engineering, South Dakota School of Mines and Technology, 501 E Street Joseph Street, Rapid City, South Dakota 57701, United States.ORCID 0000-0002-8173-2195
Baptiste JoallandDepartment of Chemistry, Integrative Biosciences (Ibio), Wayne State University, Karmanos Cancer Institute (KCI), 5101 Cass Avenue, Detroit, Michigan 48202, United States.ORCID 0000-0003-4116-6122
Collier MeersmanDepartment of Chemistry, Biology, and Health Sciences, South Dakota School of Mines and Technology, 501 E Street Joseph Street, Rapid City, South Dakota 57701, United States.
Jessica EttedguiChemistry and Synthesis Center, National Heart, Lung, and Blood Institute, 9800 Medical Center Drive, Building B, Room #2034, Bethesda, Maryland 20850, United States.
Rolf E SwensonChemistry and Synthesis Center, National Heart, Lung, and Blood Institute, 9800 Medical Center Drive, Building B, Room #2034, Bethesda, Maryland 20850, United States.
Murali C KrishnaCenter for Cancer Research, National Cancer Institute, National Institutes of Health, 31 Center Drive, Bethesda, Maryland 20814, United States.
Panayiotis NikolaouXeUS Technologies Limited, Georgiou Karaiskaki 2A, Lakatamia 2312 Nicosia, Cyprus.ORCID 0000-0002-3802-0803
Kirill V KovtunovInternational Tomography Center, SB RAS, 3A Institutskaya Street, Novosibirsk 630090, Russia.ORCID 0000-0001-7577-9619
Oleg G SalnikovInternational Tomography Center, SB RAS, 3A Institutskaya Street, Novosibirsk 630090, Russia.ORCID 0000-0003-2266-7335
Igor V KoptyugInternational Tomography Center, SB RAS, 3A Institutskaya Street, Novosibirsk 630090, Russia.ORCID 0000-0003-3480-7649
Max E GemeinhardtDepartment of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States.
Boyd M GoodsonDepartment of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States.ORCID 0000-0001-6079-5077
Roman V ShchepinDepartment of Chemistry, Biology, and Health Sciences, South Dakota School of Mines and Technology, 501 E Street Joseph Street, Rapid City, South Dakota 57701, United States.ORCID 0000-0001-9135-3036
Eduard Y ChekmenevDepartment of Chemistry, Integrative Biosciences (Ibio), Wayne State University, Karmanos Cancer Institute (KCI), 5101 Cass Avenue, Detroit, Michigan 48202, United States.ORCID 0000-0002-8745-8801

Funding

Molecular MRI of Brain Metabolism Enabled by Long-Lived Spin StatesR01EB029829 · NIBIB · NORTH CAROLINA STATE UNIVERSITY RALEIGH · PI THEIS, THOMAS · 2020 to 2020
$807k
Hyperpolarized Diethyl Ether for Sub-second Pulmonary MRIR21HL154032 · NHLBI · WAYNE STATE UNIVERSITY · PI CHEKMENEV, EDUARD · 2020 to 2021
$419k
Magnetic Resonance Spectroscopy and Molecular Imaging of Metabolic Pathways in CancerR21CA220137 · NCI · WAYNE STATE UNIVERSITY · PI CHEKMENEV, EDUARD · 2017 to 2019
$390k
CCR NIH HHS HHSN261200800001CNCI NIH HHS HHSN261200800001ENCI NIH HHS R21 CA220137NHLBI NIH HHS R21 HL154032NIBIB NIH HHS R01 EB029829
6 · The paper itself

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-

Indexed as

Magnetic Resonance ImagingNitrogenMagnetic FieldsMagnetic Resonance SpectroscopyNitrogen IsotopesNitrogenNitrogen Isotopes

Identifiers

PMID34102835
PMCPMC8262381

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.