CO2 methanation over alumina-supported cobalt oxide and carbide synthesized by reverse microemulsion method

نویسندگان

چکیده

High surface area alumina-supported cobalt oxides and carbides were synthesized using a one-pot reverse microemulsion method (followed by carburization for carbides). Two synthesis variations gave fine powders having specific areas ranging from 178−272 m2/g, consisting of oxide or carbide nanoparticles (5−10 nm) dispersed on γ-alumina (10−13 wt% loadings). The resulted materials tested CO2 hydrogenation. Although all (two two carbides) catalytically active, only showed high selectivity to CH4 formation (up 99 %), while also being significantly more active stable than corresponding 89 % conversion Investigation in situ FTIR has shown significant differences the reaction intermediates indicating different mechanisms hydrogenation surfaces.

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ژورنال

عنوان ژورنال: Catalysis Today

سال: 2021

ISSN: ['0920-5861', '1873-4308']

DOI: https://doi.org/10.1016/j.cattod.2020.08.017