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Citation: Zhao Dong-Yuan, Yang Ya-Shu, Guo Xie-Xian, Chen Heng-Rong, Xin Qin, Wang Guo-Jia. Preparation,Characterization and Surface Acidity of Hydroxy-Fe-Al Pillared Clays Containing Mixed-matal Complexes(II)[J]. Acta Physico-Chimica Sinica, ;1993, 9(03): 336-344. doi: 10.3866/PKU.WHXB19930311 shu

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

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

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

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.
- Pillared clay; Characterization; Acidity; Interaction
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