Characterization and Applications of Calcium Ferrites Based Materials Containing Active Oxygen Species

Hirabayashi, Daisuke; Yoshikawa, Takeshi; Kawamoto, Yoshiki; Mochizuki, Kazuhiro; Suzuki, Kenzi

doi:10.4028/3-908158-01-x.2169

Cited by 3 publications

(3 citation statements)

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“…Although the mechanism of complete gas oxidation over metal oxide compounds is not precisely known, the interaction of surface active oxygen species with reactants ("suprafacial mechanism") is a widely accepted explanation for the VOCs full oxidation over oxide catalysts for T r 400 1C [50,51]. According to this opinion, the oxygen vacancies play an important role in the catalytic activity of the oxide catalysts, these being responsible for the adsorption/desorption properties of the gas phase.…”

Section: Catalyst Activitymentioning

confidence: 97%

Some nanograined ferrites and perovskites for catalytic combustion of acetone at low temperature

Rezlescu

Popa

et al. 2015

Ceramics International

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Section: Catalyst Activitymentioning

confidence: 97%

Some nanograined ferrites and perovskites for catalytic combustion of acetone at low temperature

Rezlescu

Popa

et al. 2015

Ceramics International

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“…Systematic studies of a big number of oxide compounds have proved that the catalytic activity represents a common phenomenon for the oxide compounds, perovskites included [17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Recent specialized literature reports on a series of perovskites used for catalysts realization.…”

Section: Reports From the Specialized Literature On A Series Of Perovmentioning

confidence: 99%

“…One of the first studied oxide catalysts [17] was simple perovskite CuCoO 3 on γ-Al 2 O 3 support. This has been analyzed in comparison with a classical catalyst with platinum, in propylene elimination from the gases released in polypropylene preparation installations.…”

Section: Reports From the Specialized Literature On A Series Of Perovmentioning

confidence: 99%

Nanostructured Perovskites for Catalytic Combustion

Doroftei¹

2019

Nanostructures in Energy Generation, Transmission and Storage

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Until recently, for reducing the environment pollution, the combustion catalysts based on noble metals was considered the most active, practically irreplaceable. Their high cost, high thermal instability, high sensitivity to deactivation and to the attack of some harmful elements or compounds determine the intensification of studies to replace them with new cheaper and stable catalysts. Numerous experimental data from literature indicate that the semiconductive oxidic compounds can compete with combustion catalysts based on noble metals from catalytic activity standpoint. Recent studies led to the realization of remarkable catalytic activity at moderate (350-600°C) and high (over 600°C) temperatures at some oxidic perovskite compounds, which contain transition metals. In this study are presented a series of nanostructured oxidic compounds with perovskite structure, based on transition metals and synthesized by the precursor method of self-combustion, using polyvinyl alcohol as colloidal medium, for catalytic combustion of some volatile organic compounds at low (50-350°C) and moderate temperatures. The catalytic activity of the perovskite compounds in the total oxidation reactions of the gases is largely determined by the amount of weakly bound surface oxygen species which in turn depends on the presence of oxygen vacancies.

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Composition-dependent structural, physical, optical, and electrical properties of Ba0.5Ca0.5EuxFe12−xO19 hexaferrites for prospective applications

Mahapatro,

Agrawal

2023

J Mater Sci: Mater Electron

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Characterization and Applications of Calcium Ferrites Based Materials Containing Active Oxygen Species

Cited by 3 publications

References 0 publications

Some nanograined ferrites and perovskites for catalytic combustion of acetone at low temperature

Some nanograined ferrites and perovskites for catalytic combustion of acetone at low temperature

Nanostructured Perovskites for Catalytic Combustion

Composition-dependent structural, physical, optical, and electrical properties of Ba0.5Ca0.5EuxFe12−xO19 hexaferrites for prospective applications

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