Process optimization of catalytic hydrogen combustion

The role of hydrogen energy in the energy production sector was immeasurable. Hydrogen energy can be produced from renewable sources such as solar energy. Among the available techniques, catalytic hydrogen combustion (CHC) was considered efficient and produces minimal NOx emissions compared to traditional methods. CHC works more competently at a temperature less than 500 °C, and for higher temperatures >700 °C, transition metal oxides catalyst was recommended. Advances in CHC methods have been substantial in recent years, and a transition from non-renewable energy to hydrogen energy has been a persistent emphasis among new researchers. Noteworthy characteristics of CHC methods include feedstock selection, increased efficiency, and hydrogen conversion rates. In addition, based on the nature of the catalyst utilized —such as noble metals, transition metals, foam-based, and nanometal oxides—the conversion ratio varies. The dependencies of physical parameters such as temperature, pressure, solvent, and flow velocity were also explained. The deactivation mechanism and catalyst regeneration will help readers gain insight into the catalyst's mechanistic action.