Cobalt‐Copper Nanoparticles Catalyzed Selective Oxidation Reactions: Efficient Catalysis at Room Temperature,ChemistrySelect

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Cobalt‐Copper Nanoparticles Catalyzed Selective Oxidation Reactions: Efficient Catalysis at Room Temperature
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-09-11 , DOI: 10.1002/slct.201801140
Biraj Jyoti Borah ₁ , Abhijit Mahanta ₁ , Manoj Mondal ₁ , Hemen Gogoi ₁ , Yusuke Yamada ₂ , Pankaj Bharali ₁

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Bimetallic nanoparticles (NPs) play a pivotal role in promoting high activity and selectivity towards various industrially important reactions in comparison to single metal NPs due to their modulated electronic and surface properties. Herein, we report the synthesis of non‐precious CoCu NPs, which serve as an excellent catalyst for the selective oxidation of a wide range of electronically diverse benzyl alcohols to benzaldehydes, in the presence of tert‐butyl hydroperoxide (TBHP) as an oxidant at room temperature. The excellent catalytic activity of CoCu NPs is ascribed to a two‐fold synergistic effect arising from the combination of enhanced peroxide decomposition, active Co²⁺ catalyst regeneration driven by the faster redox processes (between Co³⁺ and Cu⁺), and a feasible cobalt dimerisation‐regeneration process. The recoverability and reusability of CoCu NPs are also demonstrated. With the merits of low‐cost and recyclable catalysis under mild conditions, the present catalyst represents an efficient and potential alternative to precious metal catalysts.

中文翻译：

钴铜纳米颗粒催化的选择性氧化反应：室温下的高效催化

与单金属NPs相比，双金属纳米颗粒（NPs）由于具有调制的电子和表面特性，因此在促进对各种重要工业反应的高活性和选择性方面起着关键作用。本文中，我们报告了非贵金属CoCu NP的合成，它们在氢过氧化叔丁基（TBHP）作为氧化剂存在下，可作为多种电子多样的苄醇选择性氧化为苯甲醛的极佳催化剂。室内温度。CoCu NP的出色催化活性归因于以下两种协同作用：增强的过氧化物分解，更快的氧化还原过程（Co ³⁺和Cu之间）驱动的活性Co ²⁺催化剂再生⁺），以及可行的钴二聚再生过程。还证明了CoCu NP的可回收性和可重复使用性。凭借在温和条件下低成本和可回收催化的优点，本催化剂代表了贵金属催化剂的有效和潜在替代品。

更新日期：2018-09-11

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