CATALYTIC ACTIVITY OF NICKEL NANOPARTICLES IN THE PROCESS OF HYDROGEN GENETAYION BY THE DECOMPOSITION OF HYDRAZINE

Catalytic systems based on nickel nanoparticles (NiNPs) can be used to reduce the nitroaromatic compounds with sodium borohydride, to obtain synthesis gas from reducing raw materials, etc. The mechanism of catalytic action of nickel in such processes is similar to the mechanism of action of Raney nickel, however, the nanosize of nickel particles makes it possible to create a much wider range of catalytic systems due to the use of various carriers. Research into the use of NiNPs in hydrogen generation processes deserves the special attention. In particular, it is known that the NiNPs are an effective catalyst for the decomposition of alkaline NaBH4 solutions. Another promising source of hydrogen is hydrazine hydrate, which has a high hydrogen capacity, solid reaction products are not formed during its decomposition, and it is also economically more profitable compared to NaBH4. Recently it was shown that in alkaline solutions of ethylene glycol in the presence of NiNPs, hydrazine is decomposed according to the reaction N2H4 -> N2 + 2H2, i. e., only nitrogen and hydrogen are reaction products. Therefore, the purpose of this work is to investigate the catalytic activity of NiNPs in