NH3 to H2, exploration from pyrolytic key materials to device structure design

Hydrogen is a kind of clean fuel. With the implementation of the "Dual Carbon" strategy, the world's infrastructure development of hydrogen energy and fuel cells has entered an accelerated stage. However, hydrogen production remains a challenging issue at present. Among the methods for industrial hydrogen production methods, NH3 decomposition process generating COx-free hydrogen has garnered significant attention. Catalysts and reactors are essential components of NH3 decomposition. Efforts have been made to improve the performance of catalysts from the aspects of active components, support, and promoters. Various types of reactors have also been developed to meet the needs of various fields. This article provides a brief overview of the methods and mechanisms of NH3 decomposition for hydrogen production, introduces catalyst active components, carriers, and promoters. It reviews different types of reactors used for NH3 decomposition and describes their structural designs. Finally, based on existing research, the future development trends of NH3 decomposition catalysts and reactors are discussed.