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论文类型：期刊论文

发表时间：2018-05-01

发表刊物：CHEMNANOMAT

收录刊物：SCIE

卷号：4

期号：5

页面范围：505-509

ISSN号：2199-692X

关键字：copper; dehydrogenation; hollow submicron spheres; hybrid shells; microporous materials

摘要：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.