Ni-Mg-Al Hydrotalcite-Derived Catalysts for Ammonia Decomposition-From Precursor to Effective Catalyst.

ABSTRACT: A series of Ni-Mg-Al hydrotalcite-derived mixed metal oxides with different Ni/Mg ratios were prepared by the coprecipitation method followed by calcination at 600 °C. The hydrotalcite-like materials, as well as their calcined forms, were characterized with respect to structure (XRD, UV-Vis DRS), chemical composition (ICP-OES), textural parameters (low-temperature N₂ sorption), dispersion of nickel species (H₂-chemisorption) and nickel species reducibility (H₂-TPR). Moreover, the process of hydrotalcite-like materials' thermal transformation to mixed metal oxide systems in air and argon flow was studied by the TG-DTA method. The activity of the studied catalysts in the reaction of ammonia decomposition increased with an increase in nickel content in the sam

SUBMITTER: Kowalczyk A 

PROVIDER: S-EPMC11901857 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature