作者:Xiaoying Luo、Hongye Zhang、Zhengang Ke、Cailing Wu、Shien Guo、Yunyan Wu、Bo Yu、Zhimin Liu
DOI:10.1007/s11426-017-9215-2
日期:2018.6
Using mesoporous N-doped carbons (NCs) derived from glucose and melamine as the supports, a series of Pd/NC catalysts were prepared, in which Pd nanoparticles with average size<2.0 nm were uniformly distributed on the supports. It was indicated that the resultant Pd/NC catalysts were effective for N-formylation of amines with CO2 and H2 in ethanol without any additives. Especially, the catalyst Pd/NC-800-6.9% containing quaternary N showed the best performance, affording a series of formylamides in good or even excellent yields. Further investigation reveals that the interaction between the Pd nanoparticles and quaternary nitrogen in the NC support was responsible for the good performance of the catalyst.
使用从葡萄糖和三聚氰胺衍生的多孔氮掺杂碳(NC)作为载体,制备了一系列Pd/NC催化剂,其中平均粒径小于2.0 nm的Pd纳米颗粒均匀分布在载体上。结果表明,所得到的Pd/NC催化剂在无任何添加剂的情况下,能够有效地实现氨基的N-甲酰化反应,使用二氧化碳和氢气在乙醇中进行。特别是含有季铵氮的催化剂Pd/NC-800-6.9%表现出最佳性能,产生一系列良好甚至优秀的甲酰胺产率。进一步研究表明,Pd纳米颗粒与NC载体中的季铵氮之间的相互作用是催化剂良好性能的原因所在。