We report an efficient and robust Cu-decorated Rh/TiO₂ catalyst that improves the styrene selectivity in selective hydrogenation of phenylacetylene. The appropriate Cu coverage is found to modulate the electronic states of surface Rh atoms and changes the Rh exposed active sites, thus mitigating the overhydrogenation and enhancing the selectivity.

中文翻译：

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Cu修饰的Rh/TiO2催化剂用于苯乙炔选择性加氢制苯乙烯

我们报告了一种高效且坚固的 Cu 修饰的 Rh/TiO ₂催化剂，可提高苯乙炔选择性加氢中的苯乙烯选择性。发现适当的铜覆盖可以调节表面 Rh 原子的电子态并改变 Rh 暴露的活性位点，从而减轻过度氢化并提高选择性。