Supra‐Strong Metal‐Support Interaction in Oxide‐Solid‐Solution‐Derived Transition Metal Catalysts
Source abstract
Abstract
Abstract Transition metal catalysts with electron‐deficient active sites (Mδ+) can exhibit unique activity and selectivity in hydrogenation reactions but are prone to deactivation under high‐temperature reaction conditions due to the reduction of Mδ+. Here the existence of a supra‐strong metal‐support‐interaction in oxide‐solid‐solution‐derived nickel catalysts are reported, which greatly enhances the stability of Niδ+ against reduction. It is found that the reduction of Ni species from solid solutions of NiO and magnesium aluminum spinel occurs at higher temperatures compare to pristine NiO, which is attributed to the strengthened binding of Ni atoms to ligand oxygen atoms for the former. The strength of the metal‐support interaction in the final catalysts can be tuned by controlling the calcination temperature of the impregnation process and thus the degree of solid solution formation from separated oxide precursors. Notably, the optimized Ni catalyst with durable electron‐deficient sites exhibits a sustained CO output with a 100% selectivity and ≈30% CO2 conversion at 600 °C in catalyzing the reverse water‐gas shift reaction.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Catalysts for Methane Reforming · Catalytic Processes in Materials Science · Carbon dioxide utilization in catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China
CAS Key Laboratory of Green Process and Engineering National Engineering Research Center of Green Recycling for Strategic Metal Resources Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University Suzhou Jiangsu 215123 P. R. China
Department of Chemical Engineering Tsinghua University Beijing 100084 P. R. China
CTL Technology Research Center National Institute of Clean‐and‐Low‐Carbon Energy CHN Energy Beijing 102211 P. R. China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province
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