Bridging catalysis

IF 42.8 1区化学 Q1 CHEMISTRY, PHYSICAL

Nature Catalysis Pub Date : 2025-04-25 DOI:10.1038/s41929-025-01338-1

Francesco Zamberlan

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Abstract

The team first analysed a model liquid phase system for this reaction, composed of acetic acetic-potassium acetate solution with Pd/C, and found that Pd(0) is subjected to corrosion by molecular oxygen. This allows the solubilization of the metal as Pd(II) acetate, with the Pd(II) species then reacting with ethylene to yield VA and metallic Pd(0) as precipitate. They also notice that Pd/C promotes the reaction better than bulk Pd. They also found this is valid also for the electrochemical and thermochemical processes of model VA production in the absence of O₂: in all cases, the Pd(II) species is solvated from the solid support upon a corrosion event, but the Pd reoxidation is a heterogeneous process upon which Pd(0) particles are dispersed on the support, as confirmed by TEM measurements, ready for the subsequent corrosion step in the next catalytic cycle. Finally, the same electrochemical behaviour is also observed in a model system of the process’ industrial conditions.

Surendranath and co-workers’ investigations point to a dynamic interplay between heterogeneous Pd(0) and homogenous Pd(II) species, with a catalytic system that challenges the current catalytic phase separation paradigm, highlighting the intricate relationship between homogeneous and heterogeneous modes of reaction.

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来源期刊

Nature Catalysis Chemical Engineering-Bioengineering

CiteScore

52.10

自引率

1.10%

发文量

140

期刊介绍： Nature Catalysis serves as a platform for researchers across chemistry and related fields, focusing on homogeneous catalysis, heterogeneous catalysis, and biocatalysts, encompassing both fundamental and applied studies. With a particular emphasis on advancing sustainable industries and processes, the journal provides comprehensive coverage of catalysis research, appealing to scientists, engineers, and researchers in academia and industry. Maintaining the high standards of the Nature brand, Nature Catalysis boasts a dedicated team of professional editors, rigorous peer-review processes, and swift publication times, ensuring editorial independence and quality. The journal publishes work spanning heterogeneous catalysis, homogeneous catalysis, and biocatalysis, covering areas such as catalytic synthesis, mechanisms, characterization, computational studies, nanoparticle catalysis, electrocatalysis, photocatalysis, environmental catalysis, asymmetric catalysis, and various forms of organocatalysis.