物理化学学报 >> 1998, Vol. 14 >> Issue (05): 385-390.doi: 10.3866/PKU.WHXB19980501

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MoO3、NiO、ZnO在小表面金红石上的分散行为

张斌, 万红, 郑燕柯, 阮谦, 吴念祖, 谢有畅, 唐有祺   

  1. 北京大学物理化学研究所，北京 100871
  • 收稿日期:1998-01-22 修回日期:1998-03-04 发布日期:1998-05-15
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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
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关键词: 低比表面载体, 自发分散, 分散阈值, MoO3, NiO, ZnO, 金红石, TiO2

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