Ni Particle Morphology and Support Effect in the Catalytic Decomposition of Methane: Into the Design of Novel, High Yield Catalyst for Catalytic Decomposition of Methane

Research on high-surface-area supports and synergic promoters has been made, however, there is still much room for improvement on the catalytic-particles morphology and interaction with the support. A first approach for designing nanoplate supports to improve CDM catalysts was made. Amorphous aluminosilicates nanoplates (a-AS.np) with an average particle size of 23.4 nm and an average height of 2.8 nm, and alpha-Ni(OH)2 nanoplates (Ni.np) with an average particle size of 23.2 nm and an average thickness of 8.4 nm, were successfully synthesized, using a two-dimensional reactor in amphiphilic phases (TRAP). Nickel loaded in a-AS materials with different morphologies and promotion effects of lantana (La3+) & chromium (Cr3+) species were studied. La-Cr promoted a-AS support showed an average increase of 13% on H2 yield in severe conditions due to improved crystallization of Ni particles on mesoporous support and the electron promotion of La to Ni species. Furthermore, we evaluate the Ni.np as novel morphology support for La3+ & copper (Cu2+) species in the methane decomposition reaction. La-Cu Ni.np showed outstanding performance and stability, a max H2 yield of 15.9% (at 700 degrees C), and more than 400 min of H2 generation (at 550 degrees C) compared to its a-AS support counterparts. 2D nickel nanomaterials are synthesized using 2D reactors in amphiphilic molecules with improved performance and stability both as an active species in the catalytic decomposition of methane. In this research, the effect of this material is studied as a doping agent for different aluminosilicate supports and as a support for lanthanum and copper metals.image (c) 2024 WILEY-VCH GmbH