Direct nitrous oxide decomposition with CoOx-CeO2 catalysts

Iwanek, Ewa; Krawczyk, Krzysztof; Petryk, J.; Sobczak, Janusz W.; Kaszkur, Zbigniew

doi:10.1016/j.apcatb.2011.05.049

Cited by 40 publications

(37 citation statements)

References 19 publications

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“…The redox ability and catalytic performance of these elements can be effectively modified by CeO 2 [10,50]. The ease with which CeO 2 adsorbs oxygen from the gas phase and transports it to other catalyst components is the reason why it is added to other oxidation catalysts [51]. In our former study [52], it was found that cabbage-like Co 3 O 4 materials showed high reactivity in the degradation of 1,2,4-TrCB.…”

Section: Catalytic Activity Measurementsmentioning

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

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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.

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Section: Catalytic Activity Measurementsmentioning

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

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“…Therefore, the combination of Fe 2 O 3 and CuO can achieve good activity. Rare earth ions acted as promoters to modify the performance for N 2 O decomposition were reported [13,[26][27][28]. The catalytic redox properties in N 2 O decomposition over Journal of Industrial and Engineering Chemistry xxx (2015) xxx-xxx 2 O were investigated.…”

mentioning

confidence: 99%

Promotional effects of Ce4+, La3+ and Nd3+ incorporations on catalytic performance of Cu–Fe–O for decomposition of N2O

Xue

Shen

et al. 2015

Journal of Industrial and Engineering Chemistry

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“…It has been found that catalysts with a Co/(Co + Ce) ratio not higher than 0.64 sinter less than those with a higher cobalt content. The catalyst containing 86% cobalt exhibits the highest activity among the studied systems [22].…”

Section: Introductionmentioning

confidence: 99%

Co₃O₄Catalysts on CeO₂-ZrO₂Supports and Co₃O₄-CeO₂Catalysts on Al₂O₃/SiO₂Supports for the Oxidation of Propylene

Pham¹,

Driessche³

2015

Journal of Chemistry

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Different compositions of Co 3 O 4 catalysts on CeO 2 -ZrO 2 solid solution (Ce 0.9 Zr 0.1 O 2 and Ce 0.8 Zr 0.2 O 2 ) have been studied for the oxidation of propylene. The optional amount of Co 3 O 4 active phase on CeO 2 -ZrO 2 support of 30 wt% was found. The mixed Co 3 O 4 -CeO 2 -ZrO 2 with the same composition of the optimal supported ones showed approximately the same activity, which was not higher than the activity of the mixed Co 3 O 4 -CeO 2 catalyst. Catalytic activities of mixed Co 3 O 4 -CeO 2 with different loading contents supported on high surface area supports (Al 2 O 3 , SiO 2 ) were then measured. The optimal composition of active phase was still 30 wt% but the minimum temperature of the highest activity increased to above 300 ∘ C due to the inert nature influence of the support.

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Direct nitrous oxide decomposition with CoOx-CeO2 catalysts

Cited by 40 publications

References 19 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

Promotional effects of Ce4+, La3+ and Nd3+ incorporations on catalytic performance of Cu–Fe–O for decomposition of N2O

Co₃O₄Catalysts on CeO₂-ZrO₂Supports and Co₃O₄-CeO₂Catalysts on Al₂O₃/SiO₂Supports for the Oxidation of Propylene

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Direct nitrous oxide decomposition with CoOx-CeO2 catalysts

Cited by 40 publications

References 19 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

Promotional effects of Ce4+, La3+ and Nd3+ incorporations on catalytic performance of Cu–Fe–O for decomposition of N2O

Co3O4Catalysts on CeO2-ZrO2Supports and Co3O4-CeO2Catalysts on Al2O3/SiO2Supports for the Oxidation of Propylene

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Co₃O₄Catalysts on CeO₂-ZrO₂Supports and Co₃O₄-CeO₂Catalysts on Al₂O₃/SiO₂Supports for the Oxidation of Propylene