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

Seoyeon Lim; Jae Wook Choi; Dong Jin Suh; Ung Lee; Kwang Ho Song; Jeong Myeong Ha

doi:10.1016/j.cattod.2019.11.014

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

Seoyeon Lim, Jae Wook Choi, Dong Jin Suh, Ung Lee, Kwang Ho Song, Jeong Myeong Ha

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article

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 °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-O_x, 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.

Original language	English
Journal	Catalysis Today
DOIs	https://doi.org/10.1016/j.cattod.2019.11.014
Publication status	Accepted/In press - 2020 Jan 1

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Keywords

Alkaline-earth metal oxide
Barium oxide
Low temperature
Methane
Oxidative coupling
Perovskite

ASJC Scopus subject areas

Catalysis
Chemistry(all)

Cite this

Lim, S., Choi, J. W., Jin Suh, D., Lee, U., Song, K. H., & Ha, J. M. (Accepted/In press). Low-temperature oxidative coupling of methane using alkaline earth metal oxide-supported perovskites. Catalysis Today. https://doi.org/10.1016/j.cattod.2019.11.014

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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 °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-Ox, 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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AU - Ha, Jeong Myeong

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N2 - 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 °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-Ox, 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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Access to Document

10.1016/j.cattod.2019.11.014