Acta Phys. -Chim. Sin. ›› 1998, Vol. 14 ›› Issue (05): 385-390.doi: 10.3866/PKU.WHXB19980501

• Communication •     Next Articles

Study of Dispersion of MoO3,NiO,ZnO onto Rutile with Low Surface Area

Zhang Bin, Wan Hong, Zheng Yan-Ke, Ruan Qian, Wu Nian-Zu, Xie You-Chang, Tang You-Qi   

  1. Institute of Physical Chemistry,Peking University,Beijing 100871
  • Received:1998-01-22 Revised:1998-03-04 Published:1998-05-15
  • Contact: Xie You-Chang

Abstract:

Dispersion of MoO3, NiO, ZnO on rutile TiO2 with low specific surface area was studied with Mercury Porosimeter, SEM, XPS and Ammonia Extraction method. The dispersion thresholds of MoO3, NiO, ZnO on three rutile TiO2 carriers were obtained with XPS, and com-pared with those on anatase TiO2 with high specific surf are area. Ammonia Extraction method was used to identify the surface oxide species interarting with support surface in different strength and it was found that the proportions of oxides that can not be extracted by ammonia extraction are different for MoO3, NiO and ZnO which are supported on rutile TiO2.

Key words: Low specific surface support, Spontaneous dispersion, Dispersion threshold, MoO3, NiO, ZnO, Rutile TiO2