Copper oxide as efficient catalyst for oxidative dehydrogenation of alcohols with air
Copper oxide as efficient catalyst for oxidative dehydrogenation of alcohols with air
复制标题
DOI：
10.1039/c4cy01622j
复制
发表时间：
2015-01-01
影响因子：
5
通讯作者：
Riisager, Anders
中科院分区：
文献类型：
--
作者：
Poreddy, Raju;Engelbrekt, Christian;Riisager, Anders
使用缓冲介质中溶液合成制备的 CuO 纳米颗粒催化剂研究了醇氧化脱氢为羰基化合物的情况。在 N-环己基-3-氨基丙磺酸缓冲液中合成的 CuO 纳米粒子对将苄醇、脂环醇和不饱和醇氧化为其相应的羰基化合物表现出高催化活性，并具有优异的选择性。观察到的取代醇转化活性趋势表明涉及β-H消除步骤，从而提出了苯甲醇氧化脱氢的可能反应机制。在有氧条件下使用CuO作为一种廉价且高效的多相催化剂，为羰基化合物的合成提供了一种新的无贵金属的绿色反应方案。
The oxidative dehydrogenation of alcohols to carbonyl compounds was studied using CuO nanoparticle catalysts prepared by solution synthesis in buffered media. CuO nanoparticles synthesized in N-cyclohexyl-3- aminopropanesulfonic acid buffer showed high catalytic activity for the oxidation of benzylic, alicyclic and unsaturated alcohols to their corresponding carbonyl compounds with excellent selectivities. The observed trend in activity for conversion of substituted alcohols suggested a beta-H elimination step to be involved, thus enabling a possible reaction mechanism for oxidative dehydrogenation of benzyl alcohols to be proposed. The use of CuO as an inexpensive and efficient heterogeneous catalyst under aerobic conditions provides a new noble metal-free and green reaction protocol for carbonyl compound synthesis.