Structures of niobium pentoxide and their implications on chemical behavior

The many structures of bulk niobium pentoxide can be grouped into the low-temperature and high-temperature forms, with the latter being more ordered. The crystallization behavior, however, is influenced by starting materials, impurities, and interactions with another component. These interactions affect both the physical (mobility) and chemical (reducibility, acidity) properties of catalytic systems containing niobium pentoxide.