Kinetic analysis of non-catalytic and Mn-catalysed combustion of diesel soot surrogates

López‐Fonseca, Rubén; Elizundia, U.; Landa, Iratxe; Gutiérrez-Ortiz, M.A.; González‐Velasco, Juan R.

doi:10.1016/j.apcatb.2005.04.016

Cited by 45 publications

(29 citation statements)

References 40 publications

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“…Meanwhile, pyrolytic products can not spread out in time and non-catalytic oxidation is relatively increased, which consequentially indicates a higher activation energy. Therefore, suiting current oxidation conditions in this study, the appropriate particulate concentration should no more than 10 wt% to reduce the deviation of experiment [6,17,18].…”

Section: Catalytic Activitymentioning

confidence: 99%

Optimized Heating Rate and Soot-catalyst Ratio for Soot Oxidation over MoO3 Catalyst

Mei¹,

Mei²,

Shan³

et al. 2017

Bull. Chem. React. Eng. Catal.

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MoO3 is now utilized as a promising catalyst due to its high activity and favorable mobility at low temperature. Its spectral data and surface microstructures were characterized by Fourier transform infrared spectra (FT-IR) and Field emission scanning electron microscope (FESEM). Thermo-analysis of the carbon black was performed over nano-MoO3 catalyst in a thermogravimetric analyzer (TGA) at various heating rates and soot-catalyst ratios. Through the analysis of kinetic parameters, we found that the heat transfer effect and diffusion effect can be removed by setting lower heating rates and soot-catalyst ratios. Therefore, a strategy for selecting proper thermogravimetric parameters were established, which can contribute to the better understanding of thermo-analytical process. Copyright

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Section: Catalytic Activitymentioning

confidence: 99%

Optimized Heating Rate and Soot-catalyst Ratio for Soot Oxidation over MoO3 Catalyst

Mei¹,

Mei²,

Shan³

et al. 2017

Bull. Chem. React. Eng. Catal.

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“…Several heterogeneous solid-gas reactions, such as the diesel soot oxidation [14][15][16], degradation of polymeric materials [17], synthesis and thermal behavior of new nitro compounds [18] and decomposition of colorants [19], can be kinetically evaluated by means of thermogravimetric methods.…”

Section: Kinetic Analysismentioning

confidence: 99%

Kinetic study of benzyl sulfamide synthesis by thermolysis of N-(benzyl)-N´-(tert-butoxycarbolyl) sulfamide

et al. 2013

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“…The nano-scale V2O5/TiO2 catalysts with different loading rates were synthesized by impregnating the TiO2 surface with V2O5 for DPF regeneration, which minimizes operational risks and energy consumption in engine applications [12]. This work aims at a comparative study on the phase structure and activity of different amount (5%, 10%, 20% and 40%) of V2O5 carried on the TiO2 particles.…”

Section: Introductionmentioning

confidence: 99%

Phy-chemical Attributes of Nano-scale V2O5/TiO2 Catalyst and Its’ Effect on Soot Oxidation

Mei

Zhu

et al. 2016

Bull. Chem. React. Eng. Catal.

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The V2O5 catalysts which supported on nano-scale TiO2 with variation of vanadium contents (5%, 10%, 20% and 40%) were prepared by an incipient-wetness impregnation method. The phase structures of nano-scale V2O5/TiO2 catalysts with different loading rates were characterized by Scanning electron microscope (SEM), X-Ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectra. The oxidation activities of catalysts over diesel soot were performed in a themogravimetric analysis (TGA) system. The kinetics of the catalytic oxidation process were analyzed based on Flynn-Wall-Ozawa method. The characterization results showed that the phase structure of V2O5 supported on TiO2 depends heavily on the vanadium contents, which will put great effects on the catalytic performances for soot oxidation. At a low vanadium loading rates (V5-V20), active species exist as monomers and polymeric states. At a high loading rate (V40), the crystalline bulk V2O5 covers the surface of TiO2. The formed crystal structure occupied the active sites and led a decreasing in the catalytic effect. By comparing the characteristics temperatures of soot oxidation over V2O5 catalysts, the catalytic activities of catalysts with different loading rates for soot oxidation can be ranked as: V5 < V10 < V40 < V20. Via pyrolysis kinetics analysis, it is revealed that the activation energy of soot oxidation is minimum when the vanadium loading rates is 20%, which is fit well with the TG experimental results. The consistency of pyrolysis kinetics and TG experimental results confirm that the best activity catalyst is V20 in discussed catalysts of this paper, which is nearest to the monolayer dispersion saturated state of V2O5/TiO2 catalyst. Moreover, it convincingly demonstrate the obvious threshold effect in V2O5 catalysts.

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Kinetic analysis of non-catalytic and Mn-catalysed combustion of diesel soot surrogates

Cited by 45 publications

References 40 publications

Optimized Heating Rate and Soot-catalyst Ratio for Soot Oxidation over MoO3 Catalyst

Optimized Heating Rate and Soot-catalyst Ratio for Soot Oxidation over MoO3 Catalyst

Kinetic study of benzyl sulfamide synthesis by thermolysis of N-(benzyl)-N´-(tert-butoxycarbolyl) sulfamide

Phy-chemical Attributes of Nano-scale V2O5/TiO2 Catalyst and Its’ Effect on Soot Oxidation

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