Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2018-05-01

Journal: CHEMNANOMAT

Included Journals: SCIE

Volume: 4

Issue: 5

Page Number: 505-509

ISSN: 2199-692X

Key Words: copper; dehydrogenation; hollow submicron spheres; hybrid shells; microporous materials

Abstract: 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.