Cutting the cost to combust methane by embellishing the Co-O-Cu interaction in Cu-incorporated Co3O4-based nanocatalysts
Source abstract
Abstract
Ingredient control brings huge promise for fabricating high-performance Co 3O 4-based nanomaterials. Herein, for steering the microstructure and properties of Co 3O 4 system, copper components were incorporated into Co 3O 4 through a facile coprecipitation ploy taking n-butylamine as the precipitant. At fitting Cu-addition level, dual Co-O-Cu interactions were established by sharing oxygen species, which was based on the partial replacement of Co 2+ by Cu 2+ in Co 3O 4 lattice and creation of hetero-interfaces between surface dispersed CuO and Co 3O 4. Resultly, CH 4 combustion efficiency on tailored catalysts was elevated by lessened crystalline sizes, higher dislocation density, preferable capability towards reduction, more abundant Lewis acidic sites, larger surface concentration of Co 3+ sites, and the easy regeneration of active surface lattice oxygen contributed from richer O-vacancies. The above optimal attributes-induced supreme activity was accomplished on 0.4Cu-Co 3O 4 (molar ratio at 0.4), who was revealed to follow MvK CH 4 combustion mechanistic model, and to manifest a decent long-term durability in anhydrous condition. Besides, results underscored that Cu-addition presented tiny contribution for water-resistance.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Catalysts for Methane Reforming · Catalysis and Oxidation Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
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