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Novel Samarium Cobaltate/Silicon Carbide Composite Catalyst for Dry Reforming of Methane into Synthesis Gas

Loktev, A. S. / Arkhipova, V. A. / Bykov, M. A. / Sadovnikov, A. A. / Dedov, A. G.

The paper describes a specifically developed novel samarium cobaltate/silicon carbide composite that transforms into a high-performance carbon-resistant catalyst for dry reforming of methane into syngas (DRM). This 30%SmCoO₃/70%SiC composite without hydrogen prereduction was tested in DRM at atmospheric pressure and GHSV 15 L g^–1 h^–1 (of an equimolar CH₄–CO₂ mixture). During the test, the yields of hydrogen and carbon monoxide reached 92 and 91 mol %, respectively, at 900°C, and 20 and 28 mol % at 700°C. Using XRD, TGA, and SEM examination, zero carbonization of the catalyst surface was demonstrated. It was found that, in the course of DRM, the initial composite transformed into a material that contained silicon carbide, samarium silicate, and samarium oxide, as well as metallic cobalt nanoparticles (<20 nm).

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Novel Samarium Cobaltate/Silicon Carbide Composite Catalyst for Dry Reforming of Methane into Synthesis Gas

Loktev, A. S. / Arkhipova, V. A. / Bykov, M. A. / Sadovnikov, A. A. / Dedov, A. G.

The paper describes a specifically developed novel samarium cobaltate/silicon carbide composite that transforms into a high-performance carbon-resistant catalyst for dry reforming of methane into syngas (DRM). This 30%SmCoO₃/70%SiC composite without hydrogen prereduction was tested in DRM at atmospheric pressure and GHSV 15 L g^–1 h^–1 (of an equimolar CH₄–CO₂ mixture). During the test, the yields of hydrogen and carbon monoxide reached 92 and 91 mol %, respectively, at 900°C, and 20 and 28 mol % at 700°C. Using XRD, TGA, and SEM examination, zero carbonization of the catalyst surface was demonstrated. It was found that, in the course of DRM, the initial composite transformed into a material that contained silicon carbide, samarium silicate, and samarium oxide, as well as metallic cobalt nanoparticles (<20 nm).

Novel Samarium Cobaltate/Silicon Carbide Composite Catalyst for Dry Reforming of Methane into Synthesis Gas

Loktev, A. S. / Arkhipova, V. A. / Bykov, M. A. / Sadovnikov, A. A. / Dedov, A. G.

The paper describes a specifically developed novel samarium cobaltate/silicon carbide composite that transforms into a high-performance carbon-resistant catalyst for dry reforming of methane into syngas (DRM). This 30%SmCoO₃/70%SiC composite without hydrogen prereduction was tested in DRM at atmospheric pressure and GHSV 15 L g^–1 h^–1 (of an equimolar CH₄–CO₂ mixture). During the test, the yields of hydrogen and carbon monoxide reached 92 and 91 mol %, respectively, at 900°C, and 20 and 28 mol % at 700°C. Using XRD, TGA, and SEM examination, zero carbonization of the catalyst surface was demonstrated. It was found that, in the course of DRM, the initial composite transformed into a material that contained silicon carbide, samarium silicate, and samarium oxide, as well as metallic cobalt nanoparticles (<20 nm).

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Title:

Novel Samarium Cobaltate/Silicon Carbide Composite Catalyst for Dry Reforming of Methane into Synthesis Gas

Additional title:

Pet. Chem.

Contributors:

Loktev, A. S. (author) / Arkhipova, V. A. (author) / Bykov, M. A. (author) / Sadovnikov, A. A. (author) / Dedov, A. G. (author)

Published in:

Petroleum Chemistry ; 63 ; 607-617

Publication date:

2023-05-01

Size:

11 pages

ISSN:

1555-6239 , 0965-5441

DOI:

https://doi.org/10.1134/S0965544123030052

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

dry reforming of methane , synthesis gas , composite , samarium cobaltate , silicon carbide , carbon-resistant catalyst Chemistry , Industrial Chemistry/Chemical Engineering , Chemistry and Materials Science

Licence:

http://creativecommons.org/licenses/by/4.0/

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