Modification of silver surface with palladium and chlorine and its effect on the reaction of firmly adsorbed oxygen with ethene

Pulse chromatography revealed the reduced reactivity and enhanced selectivity of silver-chemisorbed oxygen in ethene oxidation in the presence of Pd0 and Cl-. The enhanced selectivity was found for both adsorbed and absorbed oxygen forms (OI and OII, respectively). The reduced reactivity is attributed to a high OI-Ag surface bond energy hindering the formation of an intermediate complex involved in partial and complete oxidation of ethene. The selectivity is enhanced because the centers adjacent to this complex are blocked by modifier species, thus preventing chemisorbed fragments from oxidizing into CO2 and water.

Authors
Pavlova L.F. 1 , Retamoso Rocas M. , Tarasova V.E. 1 , Yagodovskii V.D. 1
Number of issue
3
Language
English
Pages
504-507
Status
Published
Volume
77
Year
2003
Organizations
  • 1 Peoples Friendship University, ul. Miklukho-Maklaya 6, Moscow 117198, Russian Federation
Keywords
carbon dioxide; chlorine; ethylene; oxygen; palladium; silver; water; absorption; adsorption; analytical parameters; article; chemical bond; chemical modification; chemical parameters; chemical reaction; chemoreactivity; complex formation; energy; oxidation; surface property
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/78/