We report the application of nitrogen doped carbon (NDC) materials as supports for the SILP catalyzed gas-phase hydroformylation of ethylene. The Rh–xantphos complex, dissolved in [EMIM][NTf₂] and dispersed onto commercially available activated carbon yielded low activity. The incorporation of nitrogen functionalities into the surface was achieved via oxidation of the original carbon support followed by reduction with either urea or ammonia. SILP catalysts based on the so-obtained NDC materials provided higher activity in ethylene hydroformylation, while at the same time the formation of undesired aldol condensation products was low. Thus, the performance of the new SILP catalyst on NDC material represents a significant step ahead for a technically relevant, continuous catalytic operation with very high aldehyde selectivity.

中文翻译：

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氮掺杂碳的改性以用于SILP催化乙烯的加氢甲酰化

我们报告了氮掺杂碳（NDC）材料作为SILP催化的乙烯气相加氢甲酰化的载体的应用。Rh-xantphos络合物溶解在[EMIM] [NTf ₂ ]中并分散在市售活性炭上，产生低活性。氮官能掺入表面达到通过氧化原始碳载体，然后用尿素或氨水还原。基于如此获得的NDC材料的SILP催化剂在乙烯加氢甲酰化中提供了更高的活性，而同时不希望的醛醇缩合产物的形成低。因此，新型SILP催化剂在NDC材料上的性能代表了技术上重要的，具有很高醛选择性的连续催化操作向前迈出的重要一步。