Show/Hide Menu
Hide/Show Apps
anonymousUser
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Açık Bilim Politikası
Açık Bilim Politikası
Frequently Asked Questions
Frequently Asked Questions
Browse
Browse
By Issue Date
By Issue Date
Authors
Authors
Titles
Titles
Subjects
Subjects
Communities & Collections
Communities & Collections
Low temperature oxidation of carbon monoxide over alkali-metal promoted palladium-tin oxide catalysts
Date
2005-09-17
Author
MİRKELAMOĞLU, Burcu
Karakaş, Gürkan
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
4
views
0
downloads
The CO oxidation activity of sol-gel prepared tin dioxide based palladium and sodium-palladium promoted catalysts were investigated by XRD, XPS, DRIFTS and temperature programmed desorption techniques. XPS data suggests that alkali-metal promotion results in the formation of super-oxide species and promotes the surface segregation of Pd atoms, increasing the number of active sites for CO adsorption/oxidation. The formation of a ternary oxide of sodium and palladium is Postulated. Through sub-ambient TPD experiments, the noble metal promoted catalysts have been identified to exhibit CO oxidation activity below ambient temperature. Steady-state CO conversion and rate of reaction data revealed that improvements in the CO oxidation activity of palladized tin dioxide could be achieved under both oxygen-rich and oxygen-lean conditions by sodium-promotion of the catalyst.
Subject Keywords
Alkali-metal promotion
,
Tin dioxide catalysts
,
CO oxidation
,
Temperature-programmed characterization
URI
https://hdl.handle.net/11511/42721
DOI
https://doi.org/10.1007/1-4020-4741-x_32
Collections
Department of Chemical Engineering, Conference / Seminar