Ruthenium–nickel–nickel hydroxide nanoparticles for room temperature catalytic hydrogenation
Ruthenium–nickel–nickel hydroxide nanoparticles for room temperature catalytic hydrogenation
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DOI：
10.1039/c7ta01437f
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发表时间：
2017-05
影响因子：
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通讯作者：
Lihua Zhu;Shiyao Shan;V. Petkov;Weiwei Hu;A. Kroner;Jinbao Zheng;Changling Yu;Nuowei Zhang
中科院分区：
文献类型：
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作者：
Lihua Zhu;Shiyao Shan;V. Petkov;Weiwei Hu;A. Kroner;Jinbao Zheng;Changling Yu;Nuowei Zhang
提高金属在具有优异催化性能、高选择性和良好稳定性的多相催化剂中的利用率是一个重大挑战。本文公开了一种新的策略，其通过实现过渡金属和贵金属之间的纳米级协同作用。设计、制备并表征了一种新型Ru/Ni/Ni（OH）2/C催化剂，该催化剂是Ru纳米团簇与Ni/Ni（OH）2纳米颗粒（NPs）的杂化物。与现有的Ru/C、Ni/Ni（OH）2/C和Ru-Ni合金/C催化剂相比，Ru/Ni/Ni（OH）2/C催化剂对萘加氢表现出显着的催化活性。这主要归因于Ru/Ni/Ni（OH）2/C的界面Ru、Ni和Ni（OH）2位，其中，氢在Ru上吸附并活化，而Ni将活化的氢物种（作为“桥”）转移到Ni（OH）2位上的活化萘上，通过高效途径生成十氢萘。
Improving the utilization of metals in heterogeneous catalysts with excellent catalytic performance, high selectivity and good stability represents a major challenge. Herein a new strategy is disclosed by enabling a nanoscale synergy between a transition metal and a noble metal. A novel Ru/Ni/Ni(OH)2/C catalyst, which is a hybrid of Ru nanoclusters anchored on Ni/Ni(OH)2 nanoparticles (NPs), was designed, prepared and characterized. The Ru/Ni/Ni(OH)2/C catalyst exhibited a remarkable catalytic activity for naphthalene hydrogenation in comparison with existing Ru/C, Ni/Ni(OH)2/C and Ru–Ni alloy/C catalysts. This is mainly attributed to the interfacial Ru, Ni and Ni(OH)2 sites of Ru/Ni/Ni(OH)2/C, where hydrogen is adsorbed and activated on Ru while Ni transfers the activated hydrogen species (as a “bridge”) to the activated naphthalene on Ni(OH)2 sites, producing decalin through a highly effective pathway.