Impact Factor:

4.527

DOI number:

10.1016/j.ceramint.2019.08.190

Affiliation of Author(s):

重庆工商大学

Teaching and Research Group:

材料科学与工程系

Journal:

Ceramics International

Funded by:

重庆市科技局

Key Words:

Soft template method；Mesoporous Co3O4；Ethanol；Selectivity oxidation；Acetaldehyde

Abstract:

A one-pot method for preparing mesoporous Co3O4 catalysts via self-assembly method is presented. The physicochemical properties of the corresponding catalysts were studied using XRD, BET, O2-TPD, H2-TPR, HRTEM, and In-situ DRIFT. The results showed that changing the molecular chain length of swelling agents can effectively adjust the pore size, pore volume, and specific surface area, further improving the catalytic performances of the corresponding mesoporous Co3O4 catalyst. Effective control of pore structure and crystal size can ensure the supply of reactive oxygen species. Importantly, large and suitable pore size is beneficial to the desorption of desirable product acetaldehyde, which limits the continued oxidation reaction to obtain high acetaldehyde selectivity. Moreover, it is very meaningful and challenging to selectively oxidize ethanol to acetaldehyde with high selectivity at low temperature in the chemical industry.The ethanol conversion is about 70% at 200 °C, and the acetaldehyde selectivity is up to 98.5% on the Co–He catalyst.

First Author:

Shuang Chen,Hongmei Xie

Indexed by:

源刊论文

Correspondence Author:

Guilin Zhou

Discipline:

Engineering

Document Type:

Journal Article

Volume:

45

Issue:

18

Page Number:

24609–24617

Translation or Not:

no

Date of Publication:

2019-12-01

Included Journals:

SCI

Links to published journals:

https://doi.org/10.1016/j.ceramint.2019.08.190