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Preparation and catalytic activity in ethanol combustion reaction of cobalt–iron spinel catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
49790 46766 2013 6 PDF Available
Title
Preparation and catalytic activity in ethanol combustion reaction of cobalt–iron spinel catalysts
Abstract

•Pure CoFe2O4 phase is obtained when NaOH and oxalate are the coprecipitation agents.•Fe2O3 + CoFe2O4 mixture is obtained with the precipitation agent NH3.•NaOH and NH3 precipitated cobalt ferrites are mesoporous.•Oxalate precursor leads to nonporous cobalt ferrites.•Formation of Fe2O3 within cobalt ferrites causes an activity loss.

Iron–cobalt spinel catalysts were prepared via the coprecipitation method. The effect of different parameters on textural, structural and catalytic properties, in ethanol combustion, was investigated. The CoFe2O4 phase was obtained at calcination temperatures as low as 500 °C and the usage of ammonia as precipitating agent, results in the formation of Fe2O3 in addition to the spinel phase. The catalyst prepared using nitrate salts, NaOH as precipitation agent and calcined at 600 °C had the best catalytic performance achieving ethanol complete oxidation at 271 °C.

Keywords
Cobalt ferrite; Spinel; Coprecipitation; Catalytic combustion; VOCs
First Page Preview
Preparation and catalytic activity in ethanol combustion reaction of cobalt–iron spinel catalysts
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 42, 5 December 2013, Pages 62–67
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis