The preparation of cost-effective and highly active catalysts for hydrogenation of phenol to cyclohexanol remains a great challenge. Here, we develop a simple and controllable synthetic route to prepare non-precious bimetallic NiCo(x/y)@C–T catalysts (Ni/Co = x/y, T = pyrolysis temperature) from NiCo(x/y)–MOF-74 for hydrogenation of phenol with cyclohexanol as the only product under mild reaction conditions. The results showed that all the bimetallic catalysts performed much better than their corresponding monometallic catalysts because of the strong synergistic effect between Ni and Co. And NiCo(1/2)@C-600 exhibited the best performance with 100% phenol and 100% cyclohexanol selectivity at the reaction conditions of a temperature of 120 °C, a H₂ pressure of 1.5 MPa and time of 2 h. Furthermore, this series of catalysts also displayed excellent recyclability. We believe that this MOF-templated strategy can provide a simple and repeatable route to synthesize high-performance hydrogenation catalysts.

中文翻译：

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使用碳包覆的镍钴合金纳米粒子将苯酚氢化成环己醇

制备具有成本效益和高活性的苯酚加氢制备环己醇催化剂仍然是一个巨大的挑战。在这里，我们开发了一个简单可控合成路线，以制备非贵重双金属镍钴（X / Ý @ C-）Ť催化剂（镍/钴= X / Ý，Ť =热分解温度）从镍钴（X / ÿ)–MOF-74 用于在温和的反应条件下以环己醇为唯一产物的苯酚加氢。结果表明，由于 Ni 和 Co 之间的强协同作用，所有双金属催化剂的性能都远优于其相应的单金属催化剂。 NiCo(1/2)@C-600 在 100% 苯酚和 100% 环己醇中表现出最佳性能在温度为 120°C、H ₂压力为 1.5 MPa 和时间为 2 h的反应条件下的选择性。此外，该系列催化剂还表现出优异的可回收性。我们相信这种 MOF 模板化策略可以提供一种简单且可重复的途径来合成高性能加氢催化剂。