Hydrogen generation from decomposition of hydrous hydrazine over Ni-Ir/CeO2 catalyst

The synthesis of highly active and selective catalysts is the central issue in the development of hydrous hydrazine（N;H;·H;O） as a viable hydrogen carrier. Herein, we report the synthesis of bimetallic Ni-Ir nanocatalyts supported on CeO;using a one-pot coprecipitation method. A combination of XRD, HRTEM and XPS analyses indicate that the Ni-Ir/CeO;catalyst is composed of tiny Ni-Ir alloy nanoparticles with an average size of around 4 nm and crystalline CeO;matrix. The Ni-Ir/CeO;catalyst exhibits high catalytic activity and excellent selectivity towards hydrogen generation from N;H;·H;O at mild temperatures. Furthermore, in contrast to previously reported Ni-Pt catalysts, the Ni-Ir/CeO;catalyst shows an alleviated requirement on alkali promoter to achieve its optimal catalytic performance.