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Abstract
Six types of alumina-support Ni catalysts were studied in dry reforming of methane to find out the influence that calcination rate, calcination temperature, and reduction temperature had on the activity and stability of the catalysts. BET, XRD, H2-TPR, TGA-DTA were carried out to analyzed the physicochemical properties of these catalysts. The H2-TPR results indicated that the proper parameters in preparing and reaction process could increase the amount of Ni reduced from NiAl2O4. And Ni reduced from NiAl2O4 could decrease the amount of inert carbon forming on catalysts' surfaces, so it was crucial to Ni/Al2O3 catalysts’ performance. Also, the results showed that the best condition was 5 °C/min calcination rate, 600 °C calcination temperature, and 700 °C reduction temperature. With this condition, TGA-DTA results showed that carbon deposition could be less and active.
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