Acta Phys. -Chim. Sin. ›› 1993, Vol. 9 ›› Issue (03): 336-344.doi: 10.3866/PKU.WHXB19930311

• ARTICLE • Previous Articles     Next Articles

Preparation,Characterization and Surface Acidity of Hydroxy-Fe-Al Pillared Clays Containing Mixed-matal Complexes(II)

Zhao Dong-Yuan; Yang Ya-Shu; Guo Xie-Xian; Chen Heng-Rong; Xin Qin; Wang Guo-Jia   

  1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023; Department of Chemistry, Jilin University, Changchun 130023
  • Received:1991-11-02 Revised:1992-05-18 Published:1993-06-15
  • Contact: Zhao Dong-Yuan

Abstract: Hydroxy-Fe-Al Pillared Clays (FeAl-PILC)containing mixed-metal complexes with various Fe/Al ratios were characterized by UV-DRS, Mossbauer spectrascopy, XPS, TPR measurement. The surface hydroxyl and acidity were determined by IR, Py-IR and TPD. The results have shown that iron in the pillars relatively stronger interacts with alumina in the pillars than with silica of interlayer. The interaction is stronger in FeAl-PILC with Fe/Al ratio<0.5 than that with Fo/Al ratio>0.5. The surface acidity is decreased with increasing of Fe/Al ratio.

Key words: Pillared clay, Characterization, Acidity, Interaction