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(a) Schematic representation of the experimental setup for using PHIP to produce HP propane via heterogeneous hydrogenation of propene with parahydrogen. (b) 1H MRI FLASH image of HP propane flowing into a 10 mm NMR tube via 1/16 in. OD Teflon capillary. Note that the NMR tube is shown schematically and its length does not match the actual scale of the 2D MR image. Reprinted with permission from Kovtunov, K. V.; et al. Tomography 2016, 2, 49.[221]
