Abstract
A yttria promoted nickel nanowire catalyst was prepared by a hard templating method, and characterized by transmission electron microscopy (TEM) and N2 physical adsorption. The catalytic properties of the yttria promoted nanowire catalyst in the partial oxidation of methane to syngas were compared with a metallic Ni catalyst which was prepared with nickel sponge. The characterization results showed that the yttria promoted nickel nanowire catalyst had high specific surface area and there was more NiO phase in the nickel nanowire catalyst than in the metallic Ni catalyst. The reaction results showed that the yttria promoted nickel nanowire catalyst had high CH4 conversion and selectivities to H2 and CO.
Highlights
The conversion of natural gas into liquid fuels is commonly performed via an indirect route through synthesis gas, a mixture of H2 and CO [1,2,3]
The catalytic properties of the yttria promoted nanowire catalyst in the partial oxidation of methane to syngas were compared with a metallic Ni catalyst which was prepared with nickel sponge
The characterization results showed that the yttria promoted nickel nanowire catalyst had high specific surface area and there was more NiO phase in the nickel nanowire catalyst than in the metallic Ni catalyst
Summary
The conversion of natural gas into liquid fuels is commonly performed via an indirect route through synthesis gas, a mixture of H2 and CO [1,2,3]. Synthesis gas is mainly produced from methane steam reforming process [4,5,6] Such a process produces a high H2/CO ratio [7]. Kim et al [24] synthesized a mesoporous Ni-Alumina catalyst and compared the performance with a nickel catalyst impregnated on a commercially available alumina support (Ni-IMP) in CPOM. They found that the Ni-Alumina catalyst showed a relatively high surface area with a narrow pore size distribution. It is expected that the yttria promoted nickel nanowire catalyst should have higher activity for CPOM, while keeping the advantages of the metallic nickel catalyst
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