Acta Phys. -Chim. Sin. ›› 1993, Vol. 9 ›› Issue (02): 193-199.doi: 10.3866/PKU.WHXB19930210

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Preparation,Pillarinc Structure and Thermal Stability of Hydroxy-Fe-Al Pillared Clays Containing Mixed-Metal Complexes(I)

Zhao Dong-Yuan; Yang Ya-Shu; Guo Xie-Xian; Wang Guo-Jia   

  1. Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023; Department of Chemistry, Jilin University, Changchun 130023
  • Received:1991-11-02 Revised:1992-05-18 Published:1993-04-15
  • Contact: Zhao Dong-Yuan

Abstract: A series of Hydroxy-Fe-Al Pillared Clays (FeAl-PILC) containing mixed-metal complexes with various Fe/Al ratios were prepared by two methods. The structure of the pillaring solution was studied by ~(27)Al-NMR, UV, ESR. The structure and thermal stability of the pillared clays were determined by XRD, DTA, UV-DRS. The results suggest that the basal spacings are 1.98—1.55 nm. The pillaring structure, surface area and thermal stability of FeAl-PILC are greatly affected by Fe/Al ratios in pillaring solution, FeAl-PILC products with Fe/Al ratio<0.5 have the pillaring structure the pillaring structure similar to that of Al-PILC, but FeAl-PILC products with Fe/Al ratio>0.5 have the pillaring structure similar to that of Fe-PILC. The basal spacings, surface area and thermal stability decrease with increasing of Fe/Al ratio.

Key words: Pillared Clay, Characterization, Stability