| Abstract Scope |
Nickel-based catalysts for efficient purification of waste gas emissions from a modified ternary Ni-M-Al alloy system with the addition of dM transition metals have been obtained. According to X-ray phase analysis, the Ni-Mn-Al precursor consists of five main phases: NiAl3, Ni2Al3, Мn4Аl11, Мn5Аl8, Мn6Аl. For Ni-Co-Mn-Al, in addition to the above, the СоАl3 phase is also observed. With an increase in the manganese content from 5 to 10%, along with the Мn5Аl8 phase, the Мn3Аl10 phase is also formed, and with a manganese content of more than 10%, the Мn3Аl2 phase with a lower aluminum content is formed. The addition of manganese leads to an increase in the specific surface area of 60 m2/g. This is due to the formation of nanostructures of various morphologies on the surface (fibrous-needle-shaped and in the form of thin hexagonal disks) with a diameter or thickness of about 50...100 nm. |