A high performance catalyst of shape-specific ruthenium nanoparticles for production of primary amines by reductive amination of carbonyl compounds.
A high performance catalyst of shape-specific ruthenium nanoparticles for production of primary amines by reductive amination of carbonyl compounds.
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DOI：
10.1039/c8sc01197d
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发表时间：
2018-07-21
期刊：
影响因子：
8.4
通讯作者：
Hara M
中科院分区：
文献类型：
--
作者：
Chandra D;Inoue Y;Sasase M;Kitano M;Bhaumik A;Kamata K;Hosono H;Hara M
具有高活性表面的金属催化剂的创造对于满足化学工业的强劲经济需求至关重要。具有高活性表面的金属催化剂的创造对于满足化学工业的强劲经济需求至关重要。已经开发了具有暴露在其平坦表面上的大部分原子活性{111}小面的特定平坦形状的原始fcc钌纳米颗粒，其作为高选择性和可重复使用的多相催化剂，用于通过羰基化合物的低温还原胺化以极高的反应速率生产各种伯胺。该催化剂的高性能归因于大部分金属Ru作为活性位点，具有弱的供电子能力，其在平坦形状的fcc Ru纳米颗粒的表面暴露的{111}面上占优势。该催化剂表现出约100%的最高周转频率（TOF）。1850 h-1，并提供了比Ru沉积的Nb 2 O 5（TOF：约1000 h-1）的有效和选择性载体催化剂的反应速率高约6倍的反应速率。310 h-1）。
The creation of metal catalysts with highly active surfaces is pivotal to meeting the strong economic demand of the chemical industry. The creation of metal catalysts with highly active surfaces is pivotal to meeting the strong economic demand of the chemical industry. Specific flat-shaped pristine fcc ruthenium nanoparticles having a large fraction of atomically active {111} facets exposed on their flat surfaces have been developed that act as a highly selective and reusable heterogeneous catalyst for the production of various primary amines at exceedingly high reaction rates by the low temperature reductive amination of carbonyl compounds. The high performance of the catalyst is attributed to the large fraction of metallic Ru serving as active sites with weak electron donating ability that prevail on the surface exposed {111} facets of flat-shaped fcc Ru nanoparticles. This catalyst exhibits a highest turnover frequency (TOF) of ca. 1850 h–1 for a model reductive amination of biomass derived furfural to furfurylamine and provides a reaction rate approximately six times higher than that of an efficient and selective support catalyst of Ru-deposited Nb2O5 (TOF: ca. 310 h–1).
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