2-3-1 EDTA錯体を用いたNi触媒によるCH₄,CO₂,O₂からの合成ガスの製造

抄録

Supported metallic nickel catalyst is often used for CO2 dry reforming of methane (DRM), because of its relatively inexpensive cost and high activity. In this study, endothermic DRM combined with exothermal partial oxidation of methane (POM) is investigated over highly dispersed Ni/SiO₂ catalysts. A highly dispersed Ni/SiO₂ catalyst was prepared via impregnation of Ni-EDTA complex (denoted as NiE/SiO₂). For comparison, A Ni/SiO₂ catalysts was also prepared via conventional impregnation of Ni(NO₃)₂ aqueous solution (denoted as Ni/SiO₂). The catalysts were characterized by XRD, TPR, TEM, TG and tested using CH₄, CO₂, O₂ (8:6:1) flow at 750 °C. NiE/SiO₂ exhibited excellent performance and long lifetime due to highly dispersed nickel particles bound onto silica gel strongly.