Kinetic Analysis of Decomposition of Ammonia over Nickel and Ruthenium Catalysts

  • Takahashi Atsushi
    Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)
  • Fujitani Tadahiro
    Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)

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説明

The present study investigates the decomposition of ammonia (NH3) over Ni and Ru catalysts using a kinetic model based on a reaction mechanism consisting of kinetically important elementary steps. Experimental results obtained over a wide range of reaction conditions were reproduced by the model. Recombinative N2 desorption was the rate-limiting step on the Ru catalyst; whereas, the overall rate of NH3 decomposition was controlled by the NH3 dehydrogenation step on the Ni catalyst.

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