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Low-temperature oxidative coupling of methane using alkaline earth metal oxide-supported perovskites

Authors
Lim, SeoyeonChoi, Jae-WookSuh, Dong JinLee, UngSong, Kwang HoHa, Jeong-Myeong
Issue Date
1-8월-2020
Publisher
ELSEVIER
Keywords
Oxidative coupling; Methane; Perovskite; Barium oxide; Low temperature; Alkaline-earth metal oxide
Citation
CATALYSIS TODAY, v.352, pp.127 - 133
Indexed
SCIE
SCOPUS
Journal Title
CATALYSIS TODAY
Volume
352
Start Page
127
End Page
133
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/53814
DOI
10.1016/j.cattod.2019.11.014
ISSN
0920-5861
Abstract
Perovskite-supported alkaline-earth metal oxide catalysts were prepared for application in the oxidative coupling of methane (OCM). The selective production of C2+ compounds, including ethane, ethylene, acetylene, propane, and propylene, was observed at reaction temperatures <700 degrees C. This lower reaction temperature was not achieved with pure perovskites but only with the combination of alkaline-earth metal oxides and perovskite supports. The formation of complex mixed oxides, such as Ba-Ca-Ti-O-x, Ba-Sr-Ti-Ox, and Ba2TiO4, was also observed for these catalysts. This contributed to the improved C2+ yield at the lower reaction temperature. The strong basicity, which contributes to the improved OCM activity, was also observed for these catalysts.
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