In this work, Ni modified Pd nanoparticles immobilized on hollow nitrogen doped carbon spheres were successfully prepared, denoted as Pd/Ni-N/C. The Pd/Ni-N/C showed a moderate catalytic activity for the catalytic reduction of 4-nitrophenol as a model reaction. When applied for the simehydrogenation of phenylacetylene, the Pd/Ni-N/C exhibited a much better catalytic performance than some other Pd-based catalysts. What’s more, the selectivity of styrene could be kept at high levels even when the reaction time was prolonged. The superior catalytic performance may be ascribed to the incorporation of Ni and N species, which were detailedly characterized and contrastively demonstrated. The contained N groups could disperse and stabilize the supported metal nanoparticles. The Pd/Ni-N/C displayed no obvious decrease of catalytic activity and selectivity in the recycling tests, indicating the potential for various industrial applications.

在这项工作中，成功地制备了固定在空心氮掺杂碳球上的Ni修饰的Pd纳米颗粒，表示为Pd / Ni-N / C。作为模型反应，Pd / Ni-N / C对4-硝基苯酚的催化还原显示出中等的催化活性。当将Pd / Ni-N / C用于苯乙炔的Simehydrogenation时，其催化性能要比其他一些Pd基催化剂好得多。而且，即使延长反应时间，也可以将苯乙烯的选择性保持在较高水平。优异的催化性能可以归因于Ni和N物种的结合，这已经得到了详细的表征和对比证明。所含的N基团可以分散并稳定负载的金属纳米颗粒。