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A series of Co–Ru–Zr/SiO2 catalysts were prepared by the co-impregnation method in order to understand the effects of calcination temperature on their activity and stability. The crystallite size of cobalt obtained from H2 chemisorption decreased up to a calcination temperature of 300 °C and then increased to reach a reasonably constant value. The activity for CO hydrogenation also increased upto...
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