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<p>A highly active and recyclable heterogeneous catalyst consisting of nickel anchored multi-walled carbon nanotubes (Ni-MWCNTs) was synthesized and utilized for the preparation of aryl esters through carbonylative coupling of aryl halides with phenol using Co<sub>2</sub>(CO)<sub>8</sub> as a carbon monoxide source. MWCNTs serves as an effective support, facilitating homogeneous distribution of nickel nanoparticles with high activity due to its large specific surface area, and chemical stability. The catalyst was systematically characterized for surface morphology, surface area, nickel nanoparticle size distribution, crystal phase, nickel oxidation state and nickel content. Under optimized reaction conditions, the Ni-MWCNTs system demonstrated remarkable catalytic performance with wide range of substrates, showing activity with both electron-donating and electron-withdrawing substituents. The catalyst also displayed excellent recyclability and could be reused for up to five consecutive cycles with minimal reduction in catalytic efficiency.</p> Graphical abstract <p></p>

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Nickel anchored multiwalled carbon nanotubes for phenoxy carbonylation using Co2(CO)8 as solid CO source

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Snehal A. Jawale,
  • Anuprita A. Mathkar,
  • Bhalchandra M. Bhanage

摘要

A highly active and recyclable heterogeneous catalyst consisting of nickel anchored multi-walled carbon nanotubes (Ni-MWCNTs) was synthesized and utilized for the preparation of aryl esters through carbonylative coupling of aryl halides with phenol using Co2(CO)8 as a carbon monoxide source. MWCNTs serves as an effective support, facilitating homogeneous distribution of nickel nanoparticles with high activity due to its large specific surface area, and chemical stability. The catalyst was systematically characterized for surface morphology, surface area, nickel nanoparticle size distribution, crystal phase, nickel oxidation state and nickel content. Under optimized reaction conditions, the Ni-MWCNTs system demonstrated remarkable catalytic performance with wide range of substrates, showing activity with both electron-donating and electron-withdrawing substituents. The catalyst also displayed excellent recyclability and could be reused for up to five consecutive cycles with minimal reduction in catalytic efficiency.

Graphical abstract