Effects of polyvinyl-pyrrolidone in a polyol method on preparaion of a perovskite-type catalyst for steam-CO2 reforming of methane
- Effects of polyvinyl-pyrrolidone in a polyol method on preparaion of a perovskite-type catalyst for steam-CO2 reforming of methane
- 박대일; 문동주; 김태규
- Steam-CO2 reforming; Polyol method; Perovskite-type catalyst; Hydrogen; GTL-FPSO
- Issue Date
- International journal of hydrogen energy
- VOL 40, 1481-1489
- A La0.8Sr0.2NiO3 perovskite-type catalyst was investigated to develop a stable catalyst for
methane steam-CO2 reforming (SCR) in a gas to liquid-floating production storage and offloading process. The perovskite-type catalyst, supported on a-Al2O3, was prepared by a polyol method. The effect of the concentration of polyvinyl-pyrrolidone (PVP) on its reducibility, structural properties, and prevention of carbon deposition was characterized by X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR), Fourier transform infrared spectrometry (FT-IR), scanning electron microscope (SEM), and thermogravimetric analysis (TGA). We also conducted methane SCR using the catalysts. At 1 M PVP, the perovskite structure was established completely without impurities; thus, it demonstrated the highest catalytic activity, 73.3% and 46.9% for CH4 and CO2 conversions, respectively. After the reaction, the weight fraction of carbon deposition on the perovskite catalyst was 0.3e0.4% and 1.9% on the Ni catalyst, which indicates that the perovskite-type catalyst superiorly suppresses carbon deposition during methane SCR.
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