Articles | Volume 2, issue 1
Research article
08 Apr 2021
Research article |  | 08 Apr 2021

Pd-based bimetallic catalysts for parahydrogen-induced polarization in heterogeneous hydrogenations

Dudari B. Burueva, Aleksandr Y. Stakheev, and Igor V. Koptyug

Related subject area

Field: Hyperpolarization | Topic: Applications – small molecules
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Cited articles

Adams, R. W., Aguilar, J. A., Atkinson, K. D., Cowley, M. J., Elliott, P. I. P., Duckett, S. B., Green, G. G. R., Khazal, I. G., López-Serrano, J., and Williamson, D. C.: Reversible interactions with para-hydrogen enhance NMR sensitivity by polarization transfer, Science, 323, 1708–1711,, 2009. 
Ardenkjaer-Larsen, J. H.: On the present and future of dissolution-DNP, J. Magn. Reson., 264, 3–12,, 2016. 
Ariyasingha, N. M., Joalland, B., Younes, H. R., Salnikov, O. G., Chukanov, N. V., Kovtunov, K. V., Kovtunova, L. M., Bukhtiyarov, V. I., Koptyug, I. V., Gelovani, J. G., and Chekmenev, E. Y.: Parahydrogen-induced polarization of diethyl ether anesthetic, Chem.-Eur. J., 26, 13621–13626,, 2020. 
Bae, J., Zhou, Z., Theis, T., Warren, W. S., and Wang, Q.: 15N4-1,2,4,5-tetrazines as potential molecular tags: integrating bioorthogonal chemistry with hyperpolarization and unearthing para-N2, Science Advances, 4, eaar2978,, 2018. 
Short summary
Catalytic hydrogenation of unsaturated molecular precursors with parahydrogen provides a major signal enhancement in NMR, which is vital for many technical as well as biomedical applications. We show that dilution of catalytically active Pd with a less active metal in heterogeneous Pd-based catalysts provides significantly larger enhancements and that the judicious choice of the dilution metal can further improve the performance, as revealed by comparing Pd-Ag and Pd-In bimetallic catalysts.