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Stable sulfated zirconia can be prepared by impregnation with sulfuric acid of a zirconium doped mesoporous MCM-41 silica and ulterior calcination at 750°C. Two catalysts with nominal sulfur contents of 1.3 and 4wt.% were prepared. After the thermal activation at this temperature, some sulfate ions (sulfur content of 0.15 and 0.69wt.%) are strongly retained onto the superficial zirconia, thus generating...
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