Partial oxidation of methane over supported Ni catalysts prepared from hydrocalmite

Abstract

Supported Ni catalysts have been prepared in-situ starting from layered double hydroxides (LDHs) as the precursor and tested for the partial oxidation of methane to synthesis gas. Supported Ni catalysts were prepared from LDHs partially substituted with Ni as the precursors (Ni/Ca/Al and Ni/Mg/Al-LDHs), and the activities were studied in relation to the structure of the catalysts and compared with those prepared by the impregnation method. Ni/Ca–Al was easily reduced to form active Ni metal particles in situ (under reaction mixture flow (CH₄ + O₂ around 773 K)) and showed a high activity and selectivity to synthesis gas production.