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<p>Flavouring ketones play a significant role in drugs and the flavouring industry. Typically, these ketones are present in berries and their isolation causes significant environmental damage and incurs considerable extraction costs. Therefore, it is essential to synthesize these ketones using green and sustainable routes. This study reports the synthesis of Ni supported on boron nitride-doped carbon catalyst by simple chelation, followed by pyrolysis and reduction. P-XRD diffraction peaks at 44.2, 51.6, and 76.2° of synthesized catalyst corresponding to the (111), (002), and (022) hkl planes for planes of metallic nickel; also, the XPS analysis confirmed the presence of Ni<sup>2+</sup> and Ni<sup>0</sup> oxidation states. HR-TEM analysis reveals the core-shell appearance of the catalyst, with Ni nanoparticles surrounded by a graphitic carbon layer. Thus, the synthesized catalyst was utilized as a bifunctional catalyst for the one-pot synthesis of raspberry and zinger ketones via cross-aldol condensation and hydrogenation. Under optimized reaction conditions, the Ni/BNC catalyst showed good activity for both cross aldol condensation of <i>p</i>-hydroxybenzaldehyde with acetone and hydrogenation of PHBA, achieving 99% conversion with 86% selectivity towards raspberry ketone and the catalyst showed good recyclability and a wider range of substrate compatibility.</p> Graphical Abstract <p></p>

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Nickel Nanoparticles Stabilized on B and N-Doped Graphitic Carbon as an Excellent Catalyst for One-Pot Synthesis of Industrially Important Flavoring Ketones

  • 期刊论文

  • 发表日期：

    2025年1月28日

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  • Hanuman G. Kachgunde,
  • Nirbhay B. Hirapara,
  • Krishnan Ravi,
  • Ankush V. Biradar

摘要

Flavouring ketones play a significant role in drugs and the flavouring industry. Typically, these ketones are present in berries and their isolation causes significant environmental damage and incurs considerable extraction costs. Therefore, it is essential to synthesize these ketones using green and sustainable routes. This study reports the synthesis of Ni supported on boron nitride-doped carbon catalyst by simple chelation, followed by pyrolysis and reduction. P-XRD diffraction peaks at 44.2, 51.6, and 76.2° of synthesized catalyst corresponding to the (111), (002), and (022) hkl planes for planes of metallic nickel; also, the XPS analysis confirmed the presence of Ni2+ and Ni0 oxidation states. HR-TEM analysis reveals the core-shell appearance of the catalyst, with Ni nanoparticles surrounded by a graphitic carbon layer. Thus, the synthesized catalyst was utilized as a bifunctional catalyst for the one-pot synthesis of raspberry and zinger ketones via cross-aldol condensation and hydrogenation. Under optimized reaction conditions, the Ni/BNC catalyst showed good activity for both cross aldol condensation of p-hydroxybenzaldehyde with acetone and hydrogenation of PHBA, achieving 99% conversion with 86% selectivity towards raspberry ketone and the catalyst showed good recyclability and a wider range of substrate compatibility.

Graphical Abstract