Effect of Pore Confinement of NaNH₂ and KNH₂ on Hydrogen Generation from Ammonia.

ABSTRACT: The development of efficient catalysts for hydrogen generation via ammonia decomposition is crucial for the use of ammonia as an energy carrier. Here, we report the effect of pore confinement of NaNH₂ and KNH₂ on ammonia decomposition catalysis. For the first time, Ni- or Ru-doped NaNH₂ and KNH₂ were confined in carbon nanopores using a combination method of solution impregnation and melt infiltration. Structure characterization indicates the nanoscale intimacy between transition metals and alkali metal amides inside the pores of the carbon support. As a result, 8 wt % Ni-doped NaNH₂ and KNH₂ nanocomposites give NH₃ conversions of 79 and 60%, respectively at 425 °C, close to the performance of a 5 wt % Ru/C refere

SUBMITTER: Chang F 

PROVIDER: S-EPMC6735300 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature