Enhanced catalytic activity of toluene oxidation over in-situ prepared Mn3O4-Fe2O3 with acid-etching treatment
- Resource Type
- article
- Authors
- Juexiu Li; Ruiqin Zhang; Yue Liu; Tonghua Sun; Jinping Jia; Mingming Guo
- Source
- Catalysis Communications, Vol 174, Iss , Pp 106581- (2023)
- Subject
- Manganese oxide
Catalytic oxidation
Toluene
In-situ synthesis
Acid etching
Chemistry
QD1-999
- Language
- English
- ISSN
- 1873-3905
Mn3O4-Fe2O3 composite catalysts are in-situ synthesized via advanced oxidation followed by modifying with hydrochloric acid to improve the catalytic toluene oxidation performance. Mn3O4-Fe2O3 modified with 1.0 M HCl (A-1.0) exhibited best activity of toluene oxidation. The temperature of 50% toluene conversion is 245 °C and the temperature of 90% conversion is 279 °C. There are much more abundant surface lattice oxygen species and higher amount of high valence manganese and iron ions on A-1.0 catalyst, which are beneficial for improving catalytic activity. In-situ DRIFTs indicated that benzaldehyde and benzoic acid are main intermediate products on A-1.0 catalyst during toluene oxidation.