Nickel-cobalt-based spherical catalyst material as well as preparation method and application thereof
By designing the nickel-cobalt-based spherical catalyst material, using the combined structure of nickel-cobalt alloy nanospheres and spherical carbon shells, and combining with the graphite carbon cladding layer, the problem of the nickel-based catalyst easily forming carbon deposits and high-temperature sintering in the methane dry reforming reaction is solved, and high-efficiency and stable catalytic performance is achieved.
CN119701964APending Publication Date: 2025-03-28NINGBO DIGITAL TWIN (EASTERN UNIV OF TECH) RES INST +1
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Patent Information
- Application Number
- CN202411908084.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
Existing nickel-based catalysts are prone to carbon deposits and high-temperature sintering during the methane dry reforming reaction, resulting in rapid decline or inactivation of the catalyst activity.
Method used
A nickel-cobalt-based spherical catalyst material was designed to uniformly distribute the surface of the spherical carbon shell through nickel-cobalt alloy nanospheres, and the entire structure was covered by a graphite carbon cladding layer to avoid agglomeration and high-temperature sintering.
Benefits of technology
The dispersion, catalytic activity and high temperature stability of the catalyst are improved, the service life of the catalyst is extended, and the inactivation phenomenon does not occur during 200 hours of operation.
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Abstract
The invention provides a nickel-cobalt-based spherical catalyst material as well as a preparation method and application thereof, and relates to the technical field of catalytic materials. The nickel-cobalt-based spherical catalyst material provided by the invention has a special spherical structure, the nickel-cobalt alloy nanospheres are uniformly formed on the surface of the spherical carbon shell layer, and the nickel-cobalt alloy nanospheres and the spherical carbon shell layer are further coated together through the graphite carbon coating layer; firstly, agglomeration of the nickel-cobalt alloy nanospheres is avoided, and then the high-temperature sintering phenomenon is avoided; secondly, the graphite carbon coating layer can isolate oxidation and coverage of amorphous carbon generated in the reforming reaction process of methane and carbon dioxide on active metal; the nickel-cobalt-based spherical catalyst material provided by the invention has the advantages of high dispersity, high catalytic activity, high stability and the like, and the problem that the existing nickel-based catalyst is quickly inactivated due to carbon deposition and high-temperature sintering in a DRM reaction is solved.
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