A novel approach to ammonia decomposition

W I F David
ISIS Facility, Rutherford Appleton Laboratory
Inorganic Chemistry Laboratory, University of Oxford

11th Annual NH3 Fuel Conference, September 23, 2014

Abstract

This talk discusses a new type of process for the cracking of ammonia (NH3) that is an alternative to the use of rare or transition metal catalysts. Effecting the decomposition of NH3 using the concurrent stoichiometric decomposition and regeneration of sodium amide (NaNH2) via sodium metal (Na), this represents a significant departure in reaction mechanism compared with traditional surface catalysts. In variable-temperature NH3 decomposition experiments, using a simple flow reactor, the Na/NaNH2 system shows superior performance to supported nickel and ruthenium catalysts, reaching 99.2% decomposition efficiency with 0.5 g of NaNH2 in a 60 sccm NH3 flow at 530 °C. As an abundant and inexpensive material, the development of NaNH2-based NH3 cracking systems may promote the utilization of NH3 for sustainable energy storage purposes.

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Other NH3 Conference Presentations

2014: Investigating and Understanding Ionic Ammine Materials

Links

ISIS, STFC Rutherford Appleton Laboratory
Inorganic Chemistry Laboratory, University of Oxford
Browse other papers from the 2014 NH3 Fuel Conference

One response to “A novel approach to ammonia decomposition

  1. Pingback: Ammonia is a genuine contender, perhaps the contender, for carbon-free energy | NH3 Fuel Association

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