http://dx.doi.org/10.1016/j.apcata.2012.03.013">
 

Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Three-dimensionally ordered macroporous SrFeO3−δ with high surface area: Active catalysts for the complete oxidation of toluene

Language

English

Abstract

Three-dimensionally ordered macroporous (3DOM) cubic perovskite-type oxides SrFeO 3-δ were prepared using the citrate acid-assisted poly(methyl methacrylate)-templating method in the presence of ethylene glycol, sucrose or l-lysine (denoted as SFO-0, SFO-Sucrose, and SFO-Lysine, respectively). It is found that the SrFeO 3-δ samples possessed a 3DOM architecture and were high in surface area (34-61 m 2/g). The porous SrFeO 3-δ catalysts performed well in toluene combustion, with the SFO-0 sample exhibiting the highest catalytic activity (T 50% = 292 °C and T 90% = 340 °C at 20,000 mL/(g h)). The catalytic activity of the samples showed a good relationship with surface area, oxygen adspecies concentration, and low-temperature reducibility, all decrease in the order of SFO-0 > SFO-Lysine > SFO-Sucrose SFO-bulk. It is deduced that the good catalytic performance of the porous SrFeO 3-δ materials is due to the good low-temperature reducibility, large surface area, and high oxygen adspecies concentration. © 2012 Elsevier B.V.

Keywords

Colloidal crystal templating preparation method, Low-temperature reducibility, Oxygen-deficient strontium ferrite, Three-dimensional ordered macroporous perovskite-type oxide, Toluene combustion

Publication Date

2012

Source Publication Title

Applied Catalysis A: General

Volume

425-426

Start Page

153

End Page

160

Publisher

Elsevier

ISSN (print)

0926860X

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