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Citation: Zhao Dong-Yuan, Yang Ya-Shu, Guo Xie-Xian, Wang Guo-Jia. Preparation,Pillarinc Structure and Thermal Stability of Hydroxy-Fe-Al Pillared Clays Containing Mixed-Metal Complexes(I)[J]. Acta Physico-Chimica Sinica, ;1993, 9(02): 193-199. doi: 10.3866/PKU.WHXB19930210 shu

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

1.
Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023; Department of Chemistry, Jilin University, Changchun 130023

Received Date: 2 November 1991
Available Online: 15 April 1993

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.
- Pillared Clay; Characterization; Stability
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