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首页> 外文期刊>Catalysis science & technology >SrFe(1-x)Sn(x)O(3-delta)nanoparticles with enhanced redox properties for catalytic combustion of benzene
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SrFe(1-x)Sn(x)O(3-delta)nanoparticles with enhanced redox properties for catalytic combustion of benzene

机译：SrFe (1-x) Sn (x)或(3-delta) nanoparticles with增强氧化还原催化的属性燃烧的苯

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摘要

A series of Sn-substituted strontium ferrates SrFe1-xSnxO3-delta(x= 0, 0.25, 0.50, 0.75 and 1.0) were prepared by the polymerized complex method. The influence of the substitution of Fe in SrFeO(3-delta)with Sn on structural, redox, and catalytic properties was investigated. X-ray diffraction and(57)Fe Mossbauer analyses revealed that the partial substitution of Fe with Sn expanded the lattice of the perovskite-type structure, leading to elongation of Fe-O bonds. The partial substitution resulted in the decline of the particle size and the increase of the specific surface area. H-2-TPR and TG measurements in a H(2)or O(2)flow indicated that the partial substitution significantly accelerated the redox rates of Fe at 500 degrees C. Due to the increased surface area and enhanced redox properties, the partially substituted SrFe(1-x)Sn(x)O(3-delta)showed higher catalytic activity than SrFeO(3-delta)for the combustion of benzene.
机译：一系列Sn-substituted锶高铁酸盐SrFe1-xSnxO3-delta (x = 0、0.25、0.50、0.751.0)是由聚合复杂方法。与Sn SrFeO (3-delta)结构,氧化还原,和催化性能研究。衍射和(57)菲穆斯堡尔分析显示铁的部分替换Sn扩大perovskite-type的晶格结构,导致伸长Fe-O债券。部分替换导致下降粒子的大小和增加的比表面积。测量在H(2)或O(2)表明,流动部分替换明显加速了铁的氧化还原利率在500度c .由于表面积的增加和提高氧化还原性质,部分取代SrFe (1 - x) Sn (x) O (3-delta)表现出更高的催化活动比SrFeO (3-delta)的燃烧苯。

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