Cobalt-nitrogen-doped carbon nanotubes stably supported on diatomite were obtained by employing Co(OAc)₂/phenanthroline. The resulting material was found to be excellent catalysts for the carbonylation of a variety of amines with CO other than phosgene. Both high activity and selectivity were achieved in this carbonylation process, and it allows air as a cheap oxidizing agent. Moreover the catalyst could be recycled for several times with relatively higher activity compared to homogeneous catalyst palladium acetate.

中文翻译：

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负载在硅藻土上的Co-N掺杂碳纳米管，用于CO和空气对胺的高效催化氧化羰基化反应

通过使用Co（OAc）₂ /菲咯啉获得稳定负载在硅藻土上的钴氮掺杂碳纳米管。发现所得的材料是用光气以外的CO将多种胺羰基化的优良催化剂。在该羰基化过程中既实现了高活性又具有选择性，并且它允许空气作为廉价的氧化剂。此外，与均相催化剂乙酸钯相比，该催化剂可以以相对较高的活性循环数次。