物理化学学报 >> 1993, Vol. 9 >> Issue (06): 819-822.doi: 10.3866/PKU.WHXB19930618

研究简报 上一篇    下一篇

(NH4)2SO4在TiO2表面上的行为研究

李荣生; 杨桦; 张武阳; 魏洤   

  1. 吉林大学化学系,长春 130023;吉林大学测试中心,长春 130023
  • 收稿日期:1992-04-22 修回日期:1992-08-10 发布日期:1993-12-15
  • 通讯作者: 李荣生

Investigation of the Behavior of Ammonium Sulfate on the Surface of TiO2

Li Rong-Sheng; Yang Hua; Zhang Wu-Yang; Wei Quan   

  1. Department of Chemistry, Jilin University, Changchun 130023; Testing Center, Jilin University, Changchun 130023
  • Received:1992-04-22 Revised:1992-08-10 Published:1993-12-15
  • Contact: Li Rong-Sheng

关键词: 硫酸铵, 二氧化钛, 自发分散, 因体酸

Abstract: (NH_4)_2SO_4-TiO_2 have been treated at different temperatures. The samples obtained have been characteristized by IR and XPS as well as XRD. The results show that below 573 K there exists dispersion of ammonium sulfate on the surface of TiO_2, and there might be a decomposition of sulfate to some extent. The dispersion the sulfate ion may be favorable for the transformation from the isolated ion to the bidentatedly bound state. The latter may interact with Ti on the surface to form the surface S-Ti coordination complex. Above 573 K the S-Ti complex will decompose gradually as the treatment temperature goes up further.

Key words: Ammonium sulfate, Titanium oxide, Dispersion, Solid acid