The structure ofthe pillaring solution was studied by ~(27)Al-NMR,UV,ESR. The structure and ther-mal stability of the pillared clays were determined by XRD,DTA,UV-DRS.

• 用~(27)Al-NMR、UV、ESR 等手段考察了柱溶液的结构和状态；用XRD、DTA、UV-DRS 等技术对其结构、稳定性进行了研究.