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Published on: February 7, 2017
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Methane Cracking over Cobalt Molybdenum Carbides
I Alshibane1, S Laassiri1, J L Rico2
11WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow, G12 8QQ UK.
Catalysis Letters
|April 23, 2019
Summary
This study investigated cobalt-molybdenum carbides and nitrides for methane cracking. Results indicate complex phase compositions and carbon deposition, influencing catalytic activity.
Area of Science:
- Catalysis
- Materials Science
- Chemical Engineering
Background:
- Methane cracking is crucial for hydrogen production and carbon materials.
- Cobalt-molybdenum compounds are promising catalysts for hydrocarbon conversions.
- Understanding structure-activity relationships is key to optimizing catalyst performance.
Purpose of the Study:
- To evaluate the catalytic behavior of cobalt-molybdenum carbides (Co3Mo3C, Co6Mo6C) and nitrides (Co3Mo3N, Co6Mo6N) in methane cracking.
- To establish the relationship between the chemical composition of these catalysts and their methane cracking activity.
- To characterize the phases present and carbon deposition after the reaction.
Main Methods:
- Synthesis and characterization of cobalt-molybdenum carbide and nitride catalysts.
- Methane cracking reaction experiments under defined conditions.
- Post-reaction analysis of catalyst samples using techniques like X-ray diffraction (XRD) and microscopy.
Main Results:
- Catalytic activity varied among the studied cobalt-molybdenum compounds.
- Post-reaction samples exhibited complex phase compositions, including Co3Mo3C, alpha-cobalt (α-Co), and beta-molybdenum carbide (β-Mo2C).
- Different forms of carbon were deposited on the catalysts during the methane cracking reaction.
Conclusions:
- The chemical composition of cobalt-molybdenum carbides and nitrides significantly influences their methane cracking activity.
- The presence of specific catalytic phases (Co3Mo3C, α-Co, β-Mo2C) and carbon deposition are critical factors in the reaction outcome.
- Further research is needed to elucidate the precise mechanisms of carbon formation and its impact on catalyst deactivation.
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