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Citation: Ma Zhong-Yi, Xu Run, Yang Cheng, Wei Wei, Li Wen-Huai, Sun Yu-Han. Preparation and Surface Properties of Different Zirconia Polymorphs[J]. Acta Physico-Chimica Sinica, ;2004, 20(10): 1221-1225. doi: 10.3866/PKU.WHXB20041011 shu

Preparation and Surface Properties of Different Zirconia Polymorphs

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan　030001

Received Date: 2 March 2004
Available Online: 15 October 2004

Amorphous, monoclinic and tetra nal 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 tetra nal 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.
- Zirconia;Surface hydroxyl;Acidity and basicity;FT-IR
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