Low-temperature ammonia decomposition catalysts for hydrogen generation

[Display omitted] •Provides a comprehensive outlook of development of precious and non-precious metal catalyst for ammonia decomposition.•Development of state of the art catalyst Ru and role of supports and promoters are broadly discussed.•Status of non-precious metal catalyst for ammonia decomposition at 450 °C, using similar supports and promoters is highlighted.•Investigates importance of development of alkali metal amide/imide as catalyst for ammonia decomposition and provides comparison of mechanism of decomposition of ammonia on them.•Nitride-imide catalyst for low temperature decomposition of ammonia is emphasized and the scope of development is discussed. Catalytic decomposition of ammonia with complete conversion for generating hydrogen at low temperature (