Structural Properties of Ni/Al2O3 Catalyst Supported on Polymer Surface for CO2 Reforming of Methane

Abstract

Synthesis dopamine methacrylamide (DMA) decorated with Ni/γ-Al₂O₃ particles was used as catalyst for the CO₂ reforming of methane (CRM) by non-thermal plasma experiment. The Ni/γ-Al₂O₃ catalyst is known as a high activity catalyst with excellent anti-coke properties in CO₂ reforming of methane (CRM). The structural properties of the prepared polymer combined with the Ni/γ-Al₂O₃ catalyst  was analyzed by X-ray powdered diffraction (XRD), surface area of supports and catalyst (BET), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) to investigate the activity of Ni/γ-Al₂O₃ on the polymer surface. The advantages of a polymer compound with Ni/γ-Al₂O₃ contributed to the high dispersion of Ni particles on the surface of polymer which provided good catalyst activity space in the CRM. CH₄ and CO₂ conversion obtained as 27.2 and 38.8 % by non-thermal plasma at MW power 1500 W without using the catalyst while in the presence of Ni/ γ -Al₂O₃ polymer catalyst conversion of CH₄ and CO₂ increased to 79% and 84%. The result confirmed that using the polymer as a carrier for Ni/γ-Al₂O₃ has significant influence on the surface characteristics of the catalyst activity site by increasing the active surface area without any effects on the Ni particle size, pore structure or crystalline diameter.