Microwave improvement of catalyst performance in soot oxidation without additives

Palma, Vincenzo; Russo, Paola; Matarazzo, Giuseppa; Ciambelli, Paolo

doi:10.1016/j.apcatb.2006.01.025

Cited by 17 publications

(6 citation statements)

References 11 publications

(16 reference statements)

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“…Various different oxide materials have been tested as soot oxidation catalysts: single oxides like PbO, Co 3 O 4 , V 2 O 5 , MoO 3 , CeO 2 , and CuO and some mixtures of them, − and some complex oxides such as spinel-type oxides and perovkite-type oxides − all showed soot oxidation activities. Perovskite oxides are a class of complex oxides with a specific structure, having the general formula ABO 3 , where lanthanide elements usually are at the A-site position and the first row transition metals are at the B-site.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Combustion of Soot over the Highly Active (La_0.9K_0.1CoO₃)_x/nmCeO₂ Catalysts

Liu

Zhang²,

Lan³

et al. 2009

J. Phys. Chem. C

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The highly active (La 0.9 K 0.1 CoO 3 ) x /nmCeO 2 catalysts consisting of comparably sized La 0.9 K 0.1 CoO 3 active component and CeO 2 support nanoparticle were studied on the catalytic combustion of soot by temperatureprogrammed oxidation (TPO) technique. The properties of oxygen species and the redox performances of catalysts were investigated by the method of O 2 -TPD and H 2 -TPR. During TPO process, all supported oxide catalysts showed lower T m than the corresponding nanometer CeO 2 support or pure La 0.9 K 0.1 CoO 3 perovskite. The best catalytic activity was obtained over (La 0.9 K 0.1 CoO 3 ) 20 /nmCeO 2 catalyst (T m ) 354°C), and its catalytic activity for the combustion of soot is as good as supported Pt catalysts. During the catalytic combustion of soot, the surface R oxygen species should play an important role. The formation of surface oxygen-containing complexes (SOC) may be one of the key intermediate species according to the results of in situ DRIFT, and NO 2 released by surface nitrate species remarkably promote the soot oxidation.

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Section: Introductionmentioning

confidence: 99%

Catalytic Combustion of Soot over the Highly Active (La_0.9K_0.1CoO₃)_x/nmCeO₂ Catalysts

Liu

Zhang²,

Lan³

et al. 2009

J. Phys. Chem. C

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“…and Palma et al . studied the influence rule of microwave power on particulate purification in the composite regeneration process of diesel particulate filter and came to a conclusion that microwave power had a great influence on the peak temperature of diesel particulate filter. Zuo et al .…”

Section: Introductionmentioning

confidence: 99%

“…At present, plenty of experimental studies on composite regeneration of particulate filter have been performed by some scholars. By adopting a microwave heated thermogravimetric analyzer, Hongmei et al [6] and Palma et al [7] studied the influence rule of microwave power on particulate purification in the composite regeneration process of diesel particulate filter and came to a conclusion that microwave power had a great influence on the peak temperature of diesel particulate filter. Zuo et al [8] studied the ignition temperature of five ceria-manganese base catalysts with different concentrations and made an activity evaluation on those catalysts.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive analysis on influencing factors of composite regeneration performance of a diesel particulate filter

Zuo

Zhang

Jiaqiang

et al. 2015

Env Prog and Sustain Energy

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In order to effectively improve the composite regeneration performance of the diesel particulate filter in vehicle, a fuzzy gray correlation analysis model based on the composite regeneration influencing factors of diesel particulate filter was established using the cosine value of fuzzy membership and Euclidean distance formula. And, on the basis of experimental data from three‐dimensional computational fluid dynamics simulation, the fuzzy gray correlation analysis on important degree of characteristic indexes, which has influence on the composite regeneration performance of diesel particulate filter, was conducted. Moreover, the method of Lagrange function was used to solve the fuzzy gray affiliate degree based on the results of this fuzzy gray correlation analysis. The effectiveness indexes of overall performance of the diesel particulate filter composite regeneration time, regeneration peak temperature and regeneration efficiency were also obtained. The results showed that the amount of ceria‐based additive had the greatest influence on the regeneration time among all the characteristic performance indexes of diesel particulate filter composite regeneration. Similarly, it could be concluded that the exhaust oxygen concentration and exhaust temperature respectively had the greatest influence on the regeneration peak temperature and regeneration efficiency. In addition, the regeneration time had the greatest influence on the overall performance of diesel particulate filter composite regeneration while the regeneration efficiency took the second place and the influence of the regeneration peak temperature was the minimum. The results of this article showed theoretical significance and reference value for optimization analysis and control of diesel particulate filter composite regeneration process. © 2015 American Institute of Chemical Engineers Environ Prog, 35: 882–890, 2016

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“…At the same time, temperature, pressure drop, and concentration of other gaseous components of DPF based on different configurations are compared to other studies. In Palma et al, regeneration performance of a SiC filter coated by catalyst is researched in the process of microwave regeneration, and the results show that Cu/V/K and KFe/V/K have better heat resistance and the catalyst‐coated SiC filter is able to reduce energy consumption in microwave regeneration . In another study, Palma et al show that simultaneously using a microwave and catalyst‐loaded filter at lower gas flow rates reduces the energy supplied, and its regeneration time is shorter than for the uncatalyzed filter .…”

Section: Introductionmentioning

confidence: 99%

Influence analysis of monolith structure on regeneration temperature in the process of microwave regeneration in the diesel particulate filter

et al. 2015

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Based on models A, B, and C of three kinds of diesel particulate filter (DPF) with microwave regeneration, a DPF microwave regeneration model is established according to the laws of conservation of mass, momentum, and energy. The trends of internal temperature under different velocities of exhaust gas in channels are simulated and analyzed. The results show that: (1) Regeneration temperature in the process of microwave regeneration will begin to increase from the front to the rear end of along the axial direction, and the maximum temperature value will appear in the rear end of the monolith. (2) The internal flow velocity in the DPF of model C is the most uniform and the temperature gradient is the smallest among the three models. Therefore, it is the most useful for DPF regeneration. (3) The minimal thermal stress is exerted on the DPF of model C. Therefore, this model is most useful for prolonging the service life of a DPF.

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Microwave improvement of catalyst performance in soot oxidation without additives

Cited by 17 publications

References 11 publications

Catalytic Combustion of Soot over the Highly Active (La_0.9K_0.1CoO₃)_x/nmCeO₂ Catalysts

Catalytic Combustion of Soot over the Highly Active (La_0.9K_0.1CoO₃)_x/nmCeO₂ Catalysts

Comprehensive analysis on influencing factors of composite regeneration performance of a diesel particulate filter

Influence analysis of monolith structure on regeneration temperature in the process of microwave regeneration in the diesel particulate filter

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Microwave improvement of catalyst performance in soot oxidation without additives

Cited by 17 publications

References 11 publications

Catalytic Combustion of Soot over the Highly Active (La0.9K0.1CoO3)x/nmCeO2 Catalysts

Catalytic Combustion of Soot over the Highly Active (La0.9K0.1CoO3)x/nmCeO2 Catalysts

Comprehensive analysis on influencing factors of composite regeneration performance of a diesel particulate filter

Influence analysis of monolith structure on regeneration temperature in the process of microwave regeneration in the diesel particulate filter

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Catalytic Combustion of Soot over the Highly Active (La_0.9K_0.1CoO₃)_x/nmCeO₂ Catalysts

Catalytic Combustion of Soot over the Highly Active (La_0.9K_0.1CoO₃)_x/nmCeO₂ Catalysts