Selective liquid phase benzyl alcohol oxidation over Cu-loaded LaFeO3 perovskite. Issue 6 (8th January 2016)

• Record Type: Journal Article
• Authors: Mistri, Rajib; Das, Dipak; Llorca, Jordi; Dominguez, Montserrat; Mandal, Tapas Kumar; Mohanty, Paritosh; Ray, Bidhan Chandra; Gayen, Arup
• Is Part Of: RSC advances. Volume 6:Issue 6(2016)
• Page Start: 4469
• Page End: 4477
• Publication Date: 2016-01-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra22592b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Copper loaded LaMO3 (M = Mn, Fe and Co) perovskites have been synthesized by a single-step solution combustion method. Abstract : 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 °C under ambient pressure. Among these, the 10 at% Cu-loaded LaFeO3 has shown the best activity i.e., ∼99% conversion with complete benzaldehyde selectivity. The formation of perovskite phase was confirmed from XRD and the presence of Cu 2+ 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.