Surface structure of cobalt, palladium, and mixed oxide‐based catalysts and their activity in methane combustion studied by means of micro‐Raman spectroscopy
Authors:
- Damian K. Chlebda,
- Roman J. Jędrzejczyk,
- Przemysław J. Jodłowski,
- Joanna Łojewska
Abstract
This paper reports the results of the study of surface properties and catalytic activity of cobalt, palladium, and mixed oxide catalysts supported on alumina. Catalytic materials were prepared by the wetness impregnation method directly from solutions of metal salts and using the ultrasound irradiation. The material surface was investigated by micro-Raman spectroscopy, and the activity in methane combustion was monitored. The results indicated the presence of different metal oxides on the catalysts' surfaces. Cobalt spinel Co3O4 was the main phase of the cobalt catalysts as well as species resulted from interactions with alumina support. In the case of palladium catalysts, the PdO was most prevalent. The article also discusses the observed variation in band position in the Raman spectra and compares the band assignment with literature data. The palladium and mixed oxide catalysts showed average conversion higher than 50% for methane combustion at 673.15 K (400 °C) especially those after sonication.
- Record ID
- CUT13b278972c66446e8b51be419b9a222d
- Publication categories
- ;
- Author
- Journal series
- Journal of Raman Spectroscopy, ISSN 0377-0486, e-ISSN 1097-4555
- Issue year
- 2017
- Vol
- 48
- No
- 12
- Pages
- 1871-1880
- Other elements of collation
- tab.; wykr.; Bibliografia (na s.) - 1879-1880; Bibliografia (liczba pozycji) - 59; Oznaczenie streszczenia - Abstr.; Data udostępnienia on-line - 2017-09-28; Numeracja w czasopiśmie - Vol. 48, Iss. 12
- Keywords in English
- cobalt oxide, in situ micro, methane combustion, palladium oxide, raman, structure
- DOI
- DOI:10.1002/jrs.5261 Opening in a new tab
- URL
- http://onlinelibrary.wiley.com/doi/10.1002/jrs.5261/abstract Opening in a new tab
- Related project
- Sonochemia jako narzędzie do aktywacji katalizatorów. Badania in situ i operando. . Project leader at PK: , ,
Projects financed by NSC [Projekty finansowane przez NCN] - Language
- eng (en) English
- Score (nominal)
- 30
- Publication indicators
- = 24
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT13b278972c66446e8b51be419b9a222d/
- URN
urn:pkr-prod:CUT13b278972c66446e8b51be419b9a222d
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.