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Green synthesis of cavity-containing manganese oxides with superior catalytic performance in toluene oxidation

AuthorsGarcía Martínez, Tomás ; López Sebastián, José Manuel ; Mayoral, Álvaro; Zhang, Yaping; Arenal, Raúl; Alonso-Domínguez, Daniel; Pico, María Pilar; López, María Luisa ; Dejoz, Ana ; Álvarez-Serrano, Inmaculada; Sanchis, Rut; Solsona, Benjamín
KeywordsManganese oxide
Structural water
VOCs oxidation
Issue Date12-Jun-2019
CitationApplied Catalysis A - General 582: 117107 (2019)
AbstractManganese oxide prepared by a simple hydrothermal method is highly active and stable in both lab and quasi industrial conditions for the total oxidation of toluene, achieving total conversion at only 175 °C in the absence of water and at 150 °C in the presence of 4 mol % water. Moreover, this performance is stable for at least 6 cycles. The enhanced catalytic performance has been related to the presence of highly reactive oxygen surface species. This species are probably promoted by Mn3O4 nanoparticles with Mn3+ at the tetragonal distorted cationic sites, likely compensated by structural water at the anionic sites. The presence of structural water can be related to the formation of internal cavities/vesicles in the Mn3O4 crystalline structure.
Description10 Figuras.- 2 Tablas.- Datos suplementarios disponibles en línea en la página web del editor.
Publisher version (URL)http://dx.doi.org/10.1016/j.apcata.2019.06.005
Appears in Collections:(ICB) Artículos
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