Synthesis and Characterization of Ce-Al Pillared Hectorite Nano-composite
The Ce-Al pillared hectorite nano-composite powders were prepared by mcrowave intercalation reaction method using synthetic hectorite as the interlayered clay, and using Ce-Al mixed solutions as the compound cation pillaring agents which were made by adding 0.5 mol·L-1 NaOH solution into a mixed solution containing 0.2mol·L-1 Ce(NO3)3 and 0. 2mol· L-1 AlCl3, meanwhile the pH value of the mixed system was controlled to 9 ～10. The microstructure and properties of the Ce-Al pillared nano-composite powders were characterized by specific surface area measurement, FT-IR, XRD, TEM, SEM. The results showed that cerium and aluminum cations could be intercalated into the structure of hectorite as the form of CeO2 and Al2O3, which would cause the nano-composite to form a layered microcrystalline structure having more intensive crystallinity. With the increase of mass ratio (Xm) of Ce-Al pillaring agent and hectorite from 0.00 to 0.10, the BET surface areas of hectorite (Xm = 0.00) and the Ce-Al pillared hectorite were increased from 189.3 m · g to 298.1 m2 · g-1 , and the d001 values of layer spacing were enlarged from 1.3771 nm to 1.3923 nm. As the Xm increased, the delaminated lamellar structure of the Ce-Al pillared hectorite was more remakable, aboundant and regular, and the layer crystallinity was also improved gradually, the delaminated lamellar microcrystalline structure indicateded the properties of the Ce-Al pillared hectorite nano-composites could be effectively improved in catalysis, adsorption, ion-exchange and other application fields.
Ce-Al pillared Hectorite Pillaring agent Nano-composite Microwave intercalation reaction
Lin Yingguang Pi Pihui Zheng Dafeng Yang Zhuoru Wang Lianshi
College of Material Science and Engineering, South China University of Technology, School of Chemistry and Chemical Engineering, South China University of Technology, China No.381, Wu
国际会议
沈阳
英文
283-286
2009-08-27（万方平台首次上网日期，不代表论文的发表时间）