On the Optimization of Ni/A and Ni/X Synthesis Procedure toward Active and Selective Catalysts for the Production of CH4 from CO2

Herein, optimization of zeolite NaA/NaX synthesis conditions in order to obtain the final product with high surface area and pore volume was investigated. An optimal condition 5 days aging time crystallization 9 h co-addition cetyltrimethylammonium bromide (CTAB) heptane. All those provided mixed phase between NaA NaX, addition organic phases improved synthesized zeolite. The role CTAB heptane on increasing studied by situ small-angle X-ray scattering (SAXS). SAXS results evidenced that small nucleation precursor formed upon phase, this can provide high-characteristic XRD signals A X after process. obtained from further used as a catalyst support impregnating 5, 10, 15, 20wt%Ni for catalyzing CO2 methanation reaction. found 15wt%Ni/zeolite expressed highest catalytic activity CH4 selectivity stability. This due dispersion Ni species metal-support interaction These indicated be potential