Nickel based catalyst structures are described herein that include a plurality of metal oxides formed as crystalline phases within the catalyst structures. Each metal oxide of a catalyst structure includes nickel and/or aluminum, where one or more metal oxides includes a nickel aluminum oxide, and the one or more nickel aluminum oxides is greater than 50% by weight of the crystalline phases within the catalyst structure. The catalyst structures further have specific surface areas of at least 13 m2/g. Mixed nickel aluminates such as the spinel phase, NiAl2O4, and NiAl10O16 are shown to have a high stability in reforming reactions.;The catalyst structures are resistant to high concentrations of sulfur and are effective in reforming operations for converting methane and other light hydrocarbons to hydrogen and one or more other components. For example, the catalyst structures are effective in coal and biomass gasification systems for the forming and cleanup of synthetic gas.
展开▼
机译:本文描述了镍基催化剂结构,其包括在催化剂结构内形成为晶相的多种金属氧化物。催化剂结构的每种金属氧化物包括镍和/或铝,其中一种或多种金属氧化物包括镍铝氧化物,并且一种或多种镍铝氧化物按催化剂结构内的结晶相的重量计大于50%。催化剂结构还具有至少13m 2 Sup> / g的比表面积。尖晶石相,NiAl 2 Sub> O 4 Sub>和NiAl 10 Sub> O 16 Sub>等混合铝酸盐显示为在重整反应中具有高稳定性。催化剂结构对高浓度的硫具有抵抗力,并且在将甲烷和其他轻质烃转化为氢和一种或多种其他组分的重整操作中有效。例如,催化剂结构在煤和生物质气化系统中有效用于形成和净化合成气。
展开▼