Preparation and Characterization of Al-pillaredClay Supported SO42-/TiO2 Solid Superacid Jiang Yuexiu, Tong Zhangfa*, Mo Yunfen, Chen Jinmei, Chen Xiaomei (School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004) Abstract SO42-/TiO2/A1-PILC (SO42-/TiO2/A1-pillared clay) solid superacid was prepared by loading active component SO42-/TiO2 on A1-pillared clay. The texture structure and surface properties of SO42-/TiO2/A1-PILC were studied by means of X-ray powder diffraction (XRD),the adsorption of N2, Hammett indicator method, X-ray photoelectron spectroscopy (XPS) and FT-IR spectra of absorbed pyridine technique respectively. The results indicated that Al-PILC carrier can inhibit the formation of anatase TiO2 and the transformation of anatase TiO2 into rutile TiO2. Compared to SO42-/TiO2, SO42-/TiO2/A1-PILC has larger surface area, more acid sites and lower acid strength. Key words A1-pillared clay, Solid superacid, Characterization, Preparation 铝交联膨润土负载SO42-/TiO2固体超强酸的制备及表征 蒋月秀 童张法* 莫云芬 陈金梅 陈小梅 (广西大学化学化工学院 南宁 530004) 摘要 将超强酸SO42-/TiO2负载于铝交联膨润土(A1-PILC)，制备了SO42-/TiO2/A1-PILC超强酸催化剂，并采用XRD、低温N2吸附法、Hammett指示剂法、XPS及吡啶吸附红外光谱等方法对其进行了结构和表面性能的表征。测定结果表明，SO42-/TiO2负载于载体A1-PILC后,TiO2的晶化及晶相转化受到抑制；与SO42-/TiO2相比，SO42-/TiO2/A1-PILC的比表面增大，总酸量增加；酸强度减小。 关键词 铝交联膨润土 固体超强酸 表征 制备 蒋月秀 女，40岁，副教授，从事催化剂的制备与应用研究。 *联系人， E-mail: bioche@gxu.edu.cn 广西“十百千人才工程”专项基金 (2000228)，北京化工大学可控化学反应科学与技术基础教育部重点实验室开放课题资助项目 2003-12-17收稿，2004-06-15接受 (PDF全文下载c04110)