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The surface structures of ZrO 2 , Y 2 O 3 –ZrO 2 and SiO 2 –ZrO 2 catalysts were studied in relation to their basicity and acidity, and the relationship between surface structure and gasification gas clean-up activity was evaluated. The physical properties of the catalysts were characterized by BET, XRD and Raman spectroscopy. The basicity and acidity...
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