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. Author manuscript; available in PMC: 2024 Oct 27.
Published in final edited form as: ACS Sens. 2023 Sep 29;8(10):3845–3854. doi: 10.1021/acssensors.3c01369

Figure 1.

Figure 1.

The study of p-H2 gas storage in disposable aluminum cans. a) Schematic diagram of the experimental setup whereby a parahydrogen generator is used to fill aluminum p-H2 storage cans. b) 1H NMR spectrum of normal hydrogen gas signal reference consisting of 75% orthohydrogen (o-H2) and 25% p-H2. c) 1H NMR spectra of the p-H2 enriched samples collected after different storage durations in an aluminum can (type 1). Green and red spectral traces correspond to the spectra collected after 1 day of and 5 days of p-H2 gas storage with p-H2 fractions of ~79% and ~34% respectively. d,e) Decay plots for p-H2 gas back-conversion to o-H2 in bottle types 1 (d) and 2 (e).