Influence of Support Composition on Catalytic Properties and Performance of Ternary Supported Ni/Al2O3-Clinoptilolite-CeO2 Nanocatalyst Used in Hydrogen Production via CH4/CO2 Reforming

Ni/γ-Al2O3-Clinoptilolite-CeO2 nanocatalyst with different Al2O3 and Clinoptilolite contents were prepared byimpregnation method. The catalytic performance for dry reforming of CH4 was investigated. The physicochemicalproperties of the nanocatalysts are evaluated by XRD, FESEM, FTIR, EDX and BET analysis. Analysis tests showedthat the clinoptilolite adding reduces specific surface area, increases crystallites size, and improves crystallinity andthermal stability. CeO2 as a support promoter has good effect on surface morphology and improves NiO particles size,activity, and stability. γ-Al2O3 increases specific surface area and enhances catalysts activity in comparison toNi/Clinoptilolite-CeO2 catalyst. FESEM results demonstrated that all catalysts have well morphology and are in thenanoscale. EDX dot mapping illustrated that homogenous dispersion of Ni, Ce and Al elements in Ni/γ-Al2O3-CeO2. Itwas found that the Ni/γ-Al2O3-CeO2 has better catalytic performance than the other nanocatalysts.

کلیدواژه ها:

Support Composition ، Ni/Al2O3-Clinoptilolite-CeO2 ، CH4/CO2 Reforming ، Hydrogen