Influence of pretreatment conditions on low-temperature carbon monoxide oxidation over CeO2/Co3O4 catalysts

Tang, Chih‐Wei; Kuo, Chao-Chieh; Kuo, Ming-Feng; Wang, Chen-Bin; Chien, Shu‐Hua

doi:10.1016/j.apcata.2006.04.020

Cited by 125 publications

(49 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A similar catalytic synergistic effect over a Co 3 O 4 /CeO 2 composite oxide has been reported in methane oxidation [9], N 2 O decomposition [10], diesel-soot oxidation [11], and low-temperature CO oxidation [8,12,13]. It has been verified that CeO 2 has high oxygen-storage and oxygen-transport capacities, and well-known catalytic and redox properties, making more oxygen available for oxidation processes [12]. Combining CeO 2 with other metal oxides often affects the mobility of oxygen on their surfaces.…”

Section: Catalytic Activity Measurementsmentioning

confidence: 88%

“…CeO 2 , a typical rare-earth oxide, is used as a promoter additive because of its high oxygen-storage and oxygen-releasing capacities [8]. Combinations of Co 3 O 4 with CeO 2 have been used in many processes such as methane oxidation [9], N 2 O decomposition [10], diesel-soot oxidation [11], and low-temperature CO oxidation [8,12,13]. In these reactions, the catalytic performance of Co 3 O 4 is greatly improved by the addition of CeO 2 because of a synergistic catalytic effect.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of flower-like Co3O4–CeO2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene

Lin

Zheng

et al. 2012

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

a b s t r a c tA micrometer-sized, nanostructured, flower-like Co 3 O 4 -CeO 2 composite oxide was synthesized by an ethylene-glycol-mediated process. The composite oxide was an assembly of polycrystalline nanoparticles, with a typical mesoporous structure. The composite's catalytic activity in 1,2,4-trichlorobenzene degradation was evaluated using a pulsed-flow microreactor-gas chromatography system, and compared with that of quartz sand, commercial CeO 2 , commercial Co 3 O 4 , and a Co 3 O 4 /CeO 2 equimass mixture. The composite oxide was a promising catalyst for 1,2,4-trichlorobenzene degradation. This is attributed to the structural features of the composite oxide with a high specific surface area and a high total pore volume, and the synergistic effect between the two composite phases. The easy creation of high-mobility active oxygen on CeO 2 and the easy cleavage of Co O bonds at the interface of the two components promote reactivity of Co 3 O 4 in 1,2,4-trichlorobenzene degradation. Pulsed catalytic theory suggests a first-order reaction between the composite oxide and 1,2,4-trichlorobenzene, with an apparent activation energy of about 27 kJ/mol, and degradation on the Co 3 O 4 -CeO 2 composite oxide would occur easily.

show abstract

Section: Catalytic Activity Measurementsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Synthesis of flower-like Co3O4–CeO2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene

Lin

Zheng

et al. 2012

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

show abstract

“…For instance, owing to their hollow interiors and high specific area, ceria nanotubes find applications as auto exhaust catalysts [15][16][17] and/or as co-catalysts for enhancing the performances in terms of higher thermal stability and catalytic activity [18][19][20][21][22][23], while CeO 2 nanowires can be employed as oxygen sensor [24], for energy storage [25] and as electrolyte for intermediate temperature solid oxide fuel cell (IT-SOFC) [26,27]. This last potential application is really promising considering that doped ceria has been investigated over the past 20 years as possible oxide-ion electrolyte competitive with stabilized zirconia [26,[28][29][30][31][32][33][34] with the advantages of higher ionic conductivity at lower operation temperature (700-800°C vs. 900-1,000°C currently used for zirconiabased electrolyte).…”

Section: Introductionmentioning

confidence: 99%

From ceria nanotubes to nanowires through electrogeneration of base

2009

View full text Add to dashboard Cite

The preparation of Ce(OH) 3 /CeO 2 nanostructures (NSs) through electrogeneration of base into anodic alumina membranes was studied. The effects of solvent (alcohol and/or water), Ce 3? partner anion nature (chloride or nitrate) and concentration, applied potential or current density in driving the morphology toward nanowires (NWs) and/or nanotubes (NTs) was described. The structural analysis performed by X-Ray Diffraction and Raman Spectroscopy allowed to evidence that the presence of Ce(IV) into the nanostructures strongly depends on the oxygen content in the growing environment.

show abstract

“…This result agrees with figure 4 (T50) dissolution time-based T50 temperature changes. T50 is a base temperature where CO oxidizes into CO 2 ; and where the lower the reaction temperature, the more active the catalytic activity [27]. The temperature of the best activity of T50 at 214 • is one hour using the dissolution powder with the highest specific surface area.…”

Section: Resultsmentioning

confidence: 99%

Co Oxidation Properties Of Selective Dissoluted Metallic Glass Composites

Kim¹,

Lee²,

Kim³

et al. 2015

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

UTLENIANIE WYBRANYCH ROZCIEŃCZONYCH KOMPOZYTÓW SZKIEŁ METALICZNYCHPorous metallic materials have been widely used in many fields including aerospace, atomic energy, electro chemistry and environmental protection. Their unique structures make them very useful as lightweight structural materials, fluid filters, porous electrodes and catalyst supports. In this study, we fabricated Ni-based porous metallic glasses having uniformly dispersed micro meter pores by the sequential processes of ball-milling and chemical dissolution method. We investigated the application of our porous metal supported for Pt catalyst. The oxidation test was performed in an atmosphere of 1% CO and 3% O 2 . Microstructure observation was performed by using a scanning electron microscope. Oxidation properties and BET (Brunauer, Emmett, and Teller) were analyzed to understand porous structure developments. The results indicated that CO Oxidation reaction was dependent on the specific surface area.

show abstract

Influence of pretreatment conditions on low-temperature carbon monoxide oxidation over CeO2/Co3O4 catalysts

Cited by 125 publications

References 46 publications

Synthesis of flower-like Co3O4–CeO2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene

Synthesis of flower-like Co3O4–CeO2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene

From ceria nanotubes to nanowires through electrogeneration of base

Co Oxidation Properties Of Selective Dissoluted Metallic Glass Composites

Contact Info

Product

Resources

About