Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (10): 1221-1225.doi: 10.3866/PKU.WHXB20041011

• ARTICLE • Previous Articles     Next Articles

Preparation and Surface Properties of Different Zirconia Polymorphs

Ma Zhong-Yi;Xu Run;Yang Cheng;Wei Wei;Li Wen-Huai;Sun Yu-Han   

  1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan 030001
  • Received:2004-03-02 Revised:2004-06-03 Published:2004-10-15
  • Contact: Sun Yu-Han

Abstract: Amorphous, monoclinic and tetragonal zirconia with pure crystal phase were prepared from the same zirconium precursor, and then characterized by XRD,SEM,NH3-TPD,CO2-TPD and FT-IR techniques to determine and compare the different surface chemical properties of the three zirconia polymorphs. The results showed that different surface hydroxyl groups presented on the three-zirconia polymorphs. Bibridged hydroxyl only existed on tetragonal zirconia and amorphous showed obvious H-bond hydroxyl while two type of tribridged hydroxyl existed on monoclinic zirconia surface. Meanwhile the acidity-basicity properties were different on the three-zirconia polymorphs.

Key words: Zirconia, Surface hydroxyl, Acidity and basicity, FT-IR