SrFe_1−xSn_xO_3−δ nanoparticles with enhanced redox properties for catalytic combustion of benzene

Abstract

A series of Sn-substituted strontium ferrate SrFe1-xSnxO3-δ (x = 0, 0.25, 0.50, 0.75 and 1.0) were prepared by the polymerized complex method. Influence of the substitution of Fe in SrFeO3-δ...

Investigation of AFeO3 (A=Ba, Sr) Perovskites for the Oxidative Dehydrogenation of Light Alkanes under Chemical Looping Conditions

“…The low-temperature peak observed in SFO at 413 °C corresponds to the reduction of Fe cations from Fe 4 + to Fe 3 + . [30,32,34] This reduction peak is accompanied by the transition of the orthorhombic perovskite SrFeO 3 to brownmillerite Sr 2 Fe 2 O 5 phase, [35][36] which is evident in the XRD pattern of a post-TPR material collected at 550 °C (Figure S5). The hightemperature peak at approximately 820 °C in SFO is assigned to the reduction of the brownmillerite Sr 2 Fe 2 O 5 to RP Sr 3 Fe 2 O 6 phase (PDF# 01-076-4086), which appears in the XRD pattern of a post-TPR material collected at 1000 °C (Figure S5).…”

Hydrogarnet-Derived Porous Polyhedral Particles of SrFeO3-δ Perovskite

“…SrFeO 2 (δ = 1), is also allowed in a topotactic fashion by a low-temperature reduction technique with CaH 2 . , This flexible variability in oxygen vacancy confers multiple functionalities, such as controls over magnetic properties including magnetoresistance effects − as well as ionic (O 2– ) and electronic conductivities ,− by modulating the δ value. The promising applications involve sensing of oxygen and reducing gases, , reversible oxygen release/absorption system, , and oxidation (combustion) catalysts. − In this regard, morphological design of particles and incorporation of mesoporosity to enhance the specific surface area are indubitably effective to improve the sensing, gas storage and catalytic performances from the kinetic point of view. − …”