The pillar structure, thermal stability and surface acidity of the pillared clays were investigated by ~(27)Al-NMR, XRD, DTA, IR, Py-IR, TPD.

• 用~(27)Al-NMR、XRD、DTA、IR、吡啶吸附-IR、正丁胺吸附-TPD等手段表征了柱结构、热稳定性和表面酸性。