Relations between the structure and catalytic activity for complete oxidation of methane of nanometer oxide La1-xSrxFeO3-δ

Abstract

In this paper, we have studied the structure of nanometer composite oxides La1-x.SrxFeO3-δ by means of Mossbauer spectroscopy, IR, XRD, and TG, and pointed out that the catalytic activity for complete oxidation of methane was related to the Fe^4^+ content, its distribution and oxygen content. Catalytic activity increased with the increase of disordered Fe^4^+ content, and decreased with the appearance of ordered Fe^4^+. The oxygen content of nanometer oxide was higher than that of large particle oxide with the same content of doped Sr, this resulted in the increase of catalytic activity for nanometer oxide.

Key words: INFRARED SPECTROPHOTOMETRY, CATALYST, X-RAY DIFFRACTION ANALYSIS, IRON OXIDE, METHANE, THERMOGRAVIMETRY, LANTHANUM OXIDE, PEROVSKITE TYPE STRUCTURE, STRONTIUM OXIDE, MOSSBAUER SPECTROMETRY

CLC Number:

O612

Cite this article

ZHONG ZIYI;CHEN LIGANG;YAN QIJIE;FU XIANCAI. Relations between the structure and catalytic activity for complete oxidation of methane of nanometer oxide La1-xSrxFeO3-δ[J]. Acta Chimica Sinica, 1996, 54(6): 585-590.

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纳米钙钛矿型复合氧化物La1-xSrxFeO3-δ结构研究