Application of carbon nano tube embedded metal particle catalyst in ammonia decomposition reaction

The invention discloses an application of a carbon nano tube embedded metal particle catalyst in an ammonia decomposition reaction. The catalyst consists of carbon nano tubes, nitrogen-doped carbon quantum dots and metal nano particles; the carbon nano tubes are single-wall or multi-wall carbon nano tubes with openings; the outer walls of the carbon nano tubes are loaded with the nitrogen-doped carbon quantum dots; and the inner walls of the carbon nano tubes are embedded with the metal nano particles, wherein the metal is one of palladium, platinum, gold, ruthenium, iridium, nickel, cobalt and iron, the size of the nitrogen-doped carbon quantum dots is not more than 10nm, and the nitrogen content is 0.1-8.0wt%. In the carbon nano tube embedded metal particle catalyst, the loading amount of the nitrogen-doped carbon quantum dots (the mass ratio of the carbon quantum dots to the carbon nano tubes) is 0.5-8.0wt%, and the loading amount of the metal is 0.1-10.0wt%. Under the confinement effect and synergistic ef