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Keywords:

  • bicarbonates;
  • homogeneous catalysis;
  • formates;
  • hydrogen storage;
  • ruthenium
Thumbnail image of graphical abstract

Let the circle be unbroken! One ruthenium catalyst generated in situ facilitates the selective hydrogenation of bicarbonates and carbonates, as well as CO2 and base, to give formates and also the selective dehydrogenation of formates back to bicarbonates. The two reactions can be coupled, leading to a reversible hydrogen-storage system. dppm=1,2-bis(diphenylphosphino)methane.