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The effect of calcination temperature (500–700°C) on the performance of B 2 O 3 /TiO 2 –ZrO 2 catalyst for vapor-phase Beckmann rearrangement of cyclohexanone oxime to caprolactam was investigated. Catalysts were characterized by adsorption of nitrogen, X-ray diffraction and ammonia temperature-programmed desorption. The results indicated that the percent of acid sites...
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