| abstract |
The present invention is to provide a supported metal catalyst for decomposing ammonia into hydrogen and nitrogen, which is high performance, inexpensive, and advantageous from the viewpoint of resources, and an efficient hydrogen generation method using the catalyst. The present invention is a catalyst for catalytic decomposition of ammonia gas to generate hydrogen, a myenite-type compound containing oxygen ions or a myenite-type compound containing 10 15 cm -3 or more conductive electrons or hydrogen anions And a metal particle for decomposing ammonia is supported on the surface of the support. Ammonia gas having a volume fraction of 0.1 to 100% is continuously supplied to the catalyst layer made of this catalyst, and under a reaction pressure of 0.01 MPa to 1.0 MPa and a reaction temperature of 300 to 800°C, weight space velocity (wHSV) 500/mlg -1 Hydrogen is produced by reacting at h -1 or higher. |