Development of a new generation reforming catalyst: Catalytic performance and carbon deposition behavior on nickel-magnesia catalysts

Catalytic performance and carbon deposition behavior in CO2 reforming and C O2-steam reforming of methane over nickel-magnesia solid solution with or w ithout Ca ions added, supported Ni/MgO, and commercial steam reforming cata lysts are discussed. No carbon deposition in CO2 reforming of methane was o bserved on Ni0.03Mg0.97O at 0.1 MPa, but at 2.0 MPa, carbon deposited on th e catalyst. The addition of Ca ion to nickel-magnesia solid solution cataly st inhibited carbon deposition through the enhancement of surface basicity. It is strongly suggested that carbon is formed via methane decomposition o n supported Ni/MgO and commercial catalyst, while the disproportionation of CO is the main source of carbon on Ni0.03Mg0.97O solid solution catalyst.