Abstract
Ni/γ-Al 2O 3 catalyst had been prepared by atmospheric pressure glow discharge (APGD) plasma jet. Such plasma-prepared catalyst exhibited an improved low-temperature activity in CO 2 reforming of CH 4, compared to that of the catalyst prepared by conventional method. Characteristics of catalysts were analyzed by means of X-ray powder diffraction (XRD), temperature programmed desorption (TPD) experiment with H 2 or CO 2 probe, Brunauer–Emmett–Teller (BET) procedure, transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The XRD and TEM characterization showed that this novel plasma-assisted preparation induced Ni nano-particles as small as 5 nm. The results of XRD, H 2-TPD and TEM confirmed that, the nickel dispersion of the Ni/γ-Al 2O 3 catalyst by APGD was enhanced greatly. The improved anti-coke deposition performance was illustrated from the results of TGA, CO 2-TPD and the stability test experiments.
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