28 research outputs found
Efficient MOF-Catalyzed Ortho–Para Hydrogen Conversion for Practical Liquefaction and Energy Storage
Parahydrogen, being one of two nuclear spin isomers of
molecular
hydrogen, is required in a number of applications, including hydrogen
liquefaction for energy storage and transportation. Obtaining pure
parahydrogen is vital for these tasks, thus requiring approaches for
efficient ortho–para (OP) hydrogen conversion.
In this work, we for the first time demonstrate the extraordinary
potential of metal–organic frameworks (MOF) as OP-conversion
catalysts. In particular, the specific conversion rate constant of
Ni-MOF-74 is found 145-fold higher than that of industrially used
catalysts (e.g., hydrous ferric oxide), thus opening new horizons
in hydrogen liquefaction and storage and, ultimately, in the broad
use of hydrogen energy