Abstract The preparation and characterization of Pd/montmorillonite supported catalysts and their application in the O-, N-, and S-arylation through Ullmann coupling reaction were reported. The catalysts consisted of Pd supported on raw montmorillonite and on a Cu-doped Ti-pillared montmorillonite, and were prepared via impregnation of the clay supports with a Pd-precursor by the incipient wetness method. The catalysts were found to be effective and gave good to excellent yield in the arylation reactions. The catalyst based on the PILC was reusable and gave good yield up to three cycles of reaction.

中文翻译：

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Pd负载在Cu掺杂的Ti柱撑蒙脱石上作为Ullmann偶联反应的催化剂

摘要 报道了Pd/蒙脱石负载型催化剂的制备、表征及其在Ullmann偶联反应中O-、N-和S-芳基化反应中的应用。催化剂由负载在原料蒙脱石上的钯和负载在铜掺杂的钛柱撑的蒙脱石上组成，并通过初湿法用钯前体浸渍粘土载体制备。发现该催化剂是有效的，并且在芳基化反应中产生良好至极好的产率。基于 PILC 的催化剂是可重复使用的，并且在三个反应循环内都具有良好的产率。