Synthesis of Ru nanoparticles confined in magnesium oxide-modified mesoporous alumina and their enhanced catalytic performance during ammonia decomposition

► Ru(acac)3 was used as a precursor for Ru/MgO-Mesoporous Alumina (MA) aided by H2O2. ► Small Ru nanoparticles were highly dispersed along the channels of MgO-MA. ► Ru/MgO-MA showed high catalytic activity and stability during ammonia decomposition.