Methanol steam reforming for hydrogen production over NiTiO3 nanocatalyst with hierarchical porous structure

Steam reforming for hydrogen production is one of the important research directions for clean energy. NiTiO3 catalysts with a hierarchical porous structure are prepared and applied to methanol steam reforming for hydrogen production. The results show that the optimum catalyst (10% Ni-Ti-O-x) not only has a hierarchical porous structure, but it also involves the coexistence of NiTiO3, anatase TiO2 and rutile TiO2. The formation of NiTiO3 is beneficial to the adsorption and activation of methanol molecules on the surface of the Ni-Ti-O-x catalyst, and the main intermediate species of the methanol molecular reaction are hydroxyl groups, methoxy species and formic acid species. Furthermore, the methanol steam reforming reaction is mainly dominated by methanol decomposition at low temperature (350-500 degrees C), while it is mainly dominated by methanol and water molecular reactions at high temperature (500-600 degrees C).

Automated summary

Steam reforming using NiTiO3 catalysts with a hierarchical porous structure is studied for methanol steam reforming and hydrogen production. The optimal catalyst (10% Ni-Ti-O-x) has a hierarchical porous structure and contains NiTiO3, anatase TiO2, and rutile TiO2. NiTiO3 promotes the adsorption and activation of methanol molecules, and the main intermediate species in the methanol reaction are hydroxyl groups, methoxy species, and formic acid species. Methanol steam reforming is dominated by methanol decomposition at low temperatures (350-500 degrees C), and by methanol and water molecular reactions at high temperatures (500-600 degrees C).