The effect of acidity of the surface of catalysts containing ultradisperse powders of iron group metals on their activity in neutralization of exhaust gases

The acid properties of the surface of catalysts containing ultradisperse powders of iron group metals were determined by spectroscopically studying adsorption of pyridine. The activity of plasma-chemically synthesized oxide-containing catalysts in oxidation of CO is shown to vary in parallel with their acidity, probably, because of an increase in the amount of oxygen adsorbed on acid sites. The activity of these systems in reduction of nitrogen oxides decreases with the number of acid sites because of a decrease in the electron-donor properties of the surface.

Number of issue
2
Language
English
Pages
197-200
Status
Published
Volume
72
Year
1998
Organizations
  • 1 Russ. Univ. of Peoples' Friendship, ul. Miklukho-Maklaya 6, Moscow, 117198, Russian Federation
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/658/