Selective liquid phase benzyl alcohol oxidation over Cu-loaded LaFeO3 perovskite

Copper loaded LaMO3 (M = Mn, Fe and Co) perovskites have been synthesized by a single-step solution combustion method. These materials have been investigated for liquid phase oxidation of benzyl alcohol using tertiary butyl hydrogen peroxide (TBHP) as oxidant in air at 80 degree C under ambient pres...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (6), p.4469-4477
Main Authors: Mistri, Rajib, Das, Dipak, Llorca, Jordi, Dominguez, Montserrat, Mandal, Tapas Kumar, Mohanty, Paritosh, Ray, Bidhan Chandra, Gayen, Arup
Format: Article
Language:English
Subjects:
Benzyl alcohol
Catalitzadors
Catalysis
Catalysts
Combustion
Copper
Electroquímica
Enginyeria química
Liquid phases
Oxidants
Perovskites
Recycling
Àrees temàtiques de la UPC
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Copper loaded LaMO3 (M = Mn, Fe and Co) perovskites have been synthesized by a single-step solution combustion method. These materials have been investigated for liquid phase oxidation of benzyl alcohol using tertiary butyl hydrogen peroxide (TBHP) as oxidant in air at 80 degree C under ambient pressure. Among these, the 10 at% Cu-loaded LaFeO3 has shown the best activity i.e., similar to 99% conversion with complete benzaldehyde selectivity. The formation of perovskite phase was confirmed from XRD and the presence of Cu2+ was confirmed by XPS analysis. The higher activity of the combustion synthesized catalyst has been ascribed to the presence of a poorly defined surface structure containing an amorphous CuO phase wrapping the LaFeO3 particle, as evidenced from the HRTEM analysis. The catalyst recycling tests have shown a negligible loss of activity in the consecutive cycles.
ISSN:2046-2069
2046-2069
DOI:10.1039/c5ra22592b