Copper Supported on Hybrid C@SiO2 Hollow Submicron Spheres as Active Ethanol Dehydrogenation Catalyst
Copper Supported on Hybrid C@SiO2 Hollow Submicron Spheres as Active Ethanol Dehydrogenation Catalyst
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杂化C@SiO2空心亚微米球负载铜作为活性乙醇脱氢催化剂
DOI：
10.1002/cnma.201800021
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发表时间：
2018-05-01
期刊：
影响因子：
3.8
通讯作者：
Lu, An-Hui
中科院分区：
文献类型：
--
作者：
Lu, Wen-Duo;Wang, Qing-Nan;Lu, An-Hui
乙醇脱氢制乙醛（DHEA）是合成化学和精细化工的一种环境友好的替代方法。关键是设计具有一定结构的铜基催化剂，以获得高的乙醛选择性。在此，混合C@SiO2中空亚微米球的设计和合成使用限制热解方法。这种混合结构处理一层碳-硅混合壳。在负载Cu之后，Cu/C@SiO2催化剂在260 ℃下表现出36.1%的乙醇转化率和类似于99%的乙醛选择性。杂化载体结合了碳和二氧化硅的两种有利性质，从而提高了选择性和稳定性。
The dehydrogenation of ethanol to acetaldehyde (DHEA) is an environmentally benign alternative for synthetic chemistry and for the fine chemical industry. The key is to design Cu-based catalysts with certain structures to obtain high acetaldehyde selectivity. Herein, hybrid C@SiO2 hollow submicron spheres were designed and synthesized using a confined pyrolysis method. This hybrid structure processes a layer of carbon-silica hybrid shell. After loading the Cu, the Cu/C@SiO2 catalyst exhibited 36.1% conversion of ethanol and similar to 99% acetaldehyde selectivity at 260 degrees C. The hybrid support combined the two favorable properties of carbon and silica and thus improving both selectivity and stability.