Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 37, Pages 11636-11639Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201403604
Keywords
heterogeneous catalysis; hyperpolarized gas; magnetic resonance imaging; parahydrogen; supported catalysts
Categories
Funding
- RAS [5.1.1]
- RFBR [14-03-00374-a, 14-03-31239-mol-a, 12-03-00403-a]
- SB RAS [57, 60, 61, 122]
- NIH ICMIC [5P50 CA128323-03, R21 GM107947 5R00 CA134749-03, 3R00A134749-02S1]
- DoD CDMRP Breast Cancer Program Era of Hope Award [W81XWH-12-1-0159/BC112431]
- [MK-4391.2013.3]
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Several supported metal catalysts were synthesized, characterized, and tested in heterogeneous hydrogenation of propene with parahydrogen to maximize nuclear spin hyperpolarization of propane gas using parahydrogen induced polarization (PHIP). The Rh/TiO2 catalyst with a metal particle size of 1.6 nm was found to be the most active and effective in the pairwise hydrogen addition and robust, demonstrating reproducible results with multiple hydrogenation experiments and stability for >= 1.5 years. 3D H-1 magnetic resonance imaging (MRI) of 1% hyperpolarized flowing gas with microscale spatial resolution (625 x 625 x 625 mu m(3)) and large imaging matrix (128 x 128 x 32) was demonstrated by using a preclinical 4.7 T scanner and 17.4 s imaging scan time.
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