Highly Efficient Dehydrogenation of Primary Aliphatic Alcohols Catalyzed by Cu Nanoparticles Dispersed on Rod-Shaped La2O2CO3
Highly Efficient Dehydrogenation of Primary Aliphatic Alcohols Catalyzed by Cu Nanoparticles Dispersed on Rod-Shaped La2O2CO3
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DOI：
10.1021/cs400255r
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发表时间：
2013-04
期刊：
影响因子：
12.9
通讯作者：
Fei Wang;Ruijuan Shi;Zhiqi Liu;P. Shang;Xuelei Pang;Shuai Shen;Zhaochi Feng;Can Li;Wenjie She
中科院分区：
文献类型：
--
作者：
Fei Wang;Ruijuan Shi;Zhiqi Liu;P. Shang;Xuelei Pang;Shuai Shen;Zhaochi Feng;Can Li;Wenjie She
铜纳米颗粒分散的棒状La 2 O2 CO 3高效催化脂肪伯醇的转移脱氢反应，醛的产率高达97%。这种高效率是通过创造一个催化活性的纳米环境，通过氢转移醇脱氢和苯乙烯氢化之间的有效反应耦合。La 2 O2 CO 3纳米棒上的{110}面不仅为醇的活化提供了大量的中等强度的碱性位，而且还引导了约4.5 nm的半球形Cu颗粒在其表面的选择性分散，从而为苯乙烯的加氢提取和转移氢原子。这一发现提供了一种新的策略，开发高活性的醇脱氢催化剂，通过调整氧化物载体的形状，从而金属-氧化物界面纳米结构。
Copper nanoparticles dispersed rod-shaped La2O2CO3 efficiently catalyzed transfer dehydrogenation of primary aliphatic alcohols with an aldehyde yield of up to 97%. This high efficiency was achieved by creating a catalytically active nanoenvironment for effective reaction coupling between alcohol dehydrogenation and styrene hydrogenation via hydrogen transfer. The {110} planes on the La2O2CO3 nanorods not only provided substantial amounts of medium-strength basic sites for the activation of alcohol but also directed the selective dispersion of hemispherical Cu particles of about 4.5 nm on their surfaces, which abstracted and transferred hydrogen atoms for styrene hydrogenation. This finding provides a new strategy for developing highly active alcohol-dehydrogenation catalysts by tuning the shape of the oxide support and consequently the metal-oxide interfacial nanostructure.