Acta Phys. -Chim. Sin. ›› 1989, Vol. 5 ›› Issue (02): 206-209.doi: 10.3866/PKU.WHXB19890215

• ARTICLE • Previous Articles     Next Articles

INVESTIGATION OF DISPERSION OF NICKEL OXIDE ONTO THE SURFACE OF γ-ALUMINA BY EXAFS

Jin Xianglin; Cai Xiaohai; Ge Zhihong; Xie Youchang; Tang Youqi

Zhao Yaqin; Lu Kunquan

  

  1. Institute of Physical Chemistry; Peking Usiversity

    Institute of Physics; Academia Sinica; Beijing

  • Received:1987-12-02 Revised:1988-05-15 Published:1989-04-15
  • Contact: Jin Xianglin

Abstract:

EXAFS spectroscopy has been used to investigate the dispersion of NiO onto the surface of γ-Al_2O_3. The comparison of the Fourier transformed EXAFS modulations of 7, 13, 18, 26, 35 wt% Ni/γ-Al_2O_3 and 13, 26 wt% Ni/α-Al_2O_3 suggests that NiO can disperse as a monolayer onto the surface of -γAl_2O_3. The Ni—O coordination distance which is near the Ni—O distance in NiO crystal suggests that the Ni ion interacts strongly with the oxygen on the γ-Al_2O_3 surface.