用铈对固体超强酸SO42-/TiO2/铝交联膨润土(SO42-/TiO2/Al-PILC)进行改性,制备了Ce-SO42-/TiO2/Al-PILC稀土超强酸,并采用XRD、低温N2吸附法及吡啶吸附红外等方法对其进行了结构、表面性能及酸性的表征.实验结果表明,铈引人SO42-/TiO2/Al-PILC超强酸对TiO2锐钛矿晶相的形成没有影响,但对锐钛矿晶相向金红石相的转变有促进作用,铈的引人使催化剂的酸强度及酸中心的数量略有下降,铈能有效地减少催化剂表面SO42-的流失量,从而提高了催化剂的活性稳定性.
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