A novel method for the incorporation of iridium nanoparticles into a hypercrosslinked polystyrene matrix is developed using supercritical CO₂ as reaction medium. The composite has regularly distributed iridium nanoparticles with monomodal size of ca 5 nm. The catalyst shows high activity in the hydrogenation of benzene and can be recycled ten times without any decrease in productivity. The catalyst gave a full conversion in the hydrogenation of toluene to methylcyclohexane and fluoro- and chlorobenzene to cyclohexane.

中文翻译：

---

沉积在超交联聚苯乙烯上的铱纳米粒子：合成及其在芳族化合物加氢中的应用

以超临界CO ₂为反应介质，开发了一种将铱纳米粒子掺入超交联聚苯乙烯基体的新方法。该复合材料具有规则分布的铱纳米粒子，其单峰尺寸约为5 nm。该催化剂在苯的氢化中表现出高活性，可以循环使用十次而不会降低生产率。该催化剂在甲苯氢化为甲基环己烷以及氟苯和氯苯氢化为环己烷中得到了完全转化。