Efficient catalytic removal of diesel soot over Mg substituted K/La0.8Ce0.2CoO3 perovskites with large surface areas

Wang, Lei; Fang, Shuqing; Feng, Nengjie; Wan, Hui; Guan, Guofeng

doi:10.1016/j.cej.2016.02.038

Cited by 58 publications

(23 citation statements)

References 26 publications

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“…Activity Measurements: All the catalysts for soot oxidation were assessed with a temperature‐programmed oxidation reaction (TPO) by running TGA experiments (Q500, TA Instruments). Printex‐U (diameter 25 nm) was purchased from Degussa and used as a model for soot for GDI because of their similar oxidation behavior , . The catalyst and soot with a weight ratio of 4:1 were mixed using a spatula for 2 min in order to copy the loose contact mode.…”

Section: Methodsmentioning

confidence: 99%

Soot Oxidation over CeO₂ or Ag/CeO₂: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst

Yang

Lü

et al. 2018

Eur J Inorg Chem

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Three types of CeO 2 were synthesized and through impregnation of Ag employing these CeO 2 types as supports, three kinds of Ag/CeO 2 were prepared. Their morphologies and structures were characterized by SEM, HRTEM, nitrogen adsorption-desorption isotherms, and H 2 -TPR reduction, indicating that the effective soot-catalyst contact and size distribution as well as the chemical state of Ag were identical. Surface oxygen vacancies (V O-s ) and bulk oxygen vacancies (V O-b ) were investigated by using XPS and Raman spectroscopy, respectively. The activities of the CeO 2 catalysts are related to surface chemisorbed oxygen, while the activities of Ag/CeO 2 are decided by [a] SHU centre of green urban mining & industry ecology,

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Section: Methodsmentioning

confidence: 99%

Soot Oxidation over CeO₂ or Ag/CeO₂: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst

Yang

Lü

et al. 2018

Eur J Inorg Chem

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“…The endothermic weight loss (B 1 ) that was seen at the temperature 0-150 o C has been attributed to the loss of surface water [14][15][16] . The second decomposition stage (B 2 ) was observed at a temperature between 150-260 o C and has been ascribed to probable loss of crystalline water [17][18][19] . The main weight loss stage (B 3 ) was observed around the temperature range of 250-400 o C and this has been assigned to the breakdown of citrate, EDTA and other organic moiety present in the catalyst 12,20,21 .…”

Section: Xrd Analysismentioning

confidence: 99%

Synthesis and Characterization of A-Site Doped Lamno3 Nano Catalysts and its Application for Soot Oxidation

et al. 2019

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A series of barium doped LaMnO3 perovskite nano catalysts were synthesized using the citric acid sol gel method. The prepared nano catalysts were characterized using the various characterization techniques such as XRD, ICPAES, FTIR, SEM, HRTEM, TPR and BET. The Xrd results showed the purity of the prepared catalyst as no segregated phases were observed and also confirming the crystallinity of the prepared catalyst. The surface area achieved in this experiment presented one of the highest reported in literature. The doping of the perovskite catalysts helps in increasing the surface area. The ICPAES results shows the efficiency of the preparation method adopted. The catalytic evaluation shows that upon introduction of Ba into the perovskite structure, the catalytic performance of the catalyst were greatly increased with LBM3 giving the lowest T50 at 550°C

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“…During the last three decades, many researchers have devoted their efforts to the removal of NO x and soot generated by diesel engines by employing catalysts [10][11][12][13][14][15][16][17]. The two most common ways of accomplishing this are selective catalytic reduction (SCR) and NO x storage-reduction (NSR) based on NO x adsorbers [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Plasma-Assisted Selective Catalytic Reduction for Low-Temperature Removal of NOx and Soot Simulant

Nguyen

Heo

et al. 2019

Catalysts

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The challenge that needs to be overcome regarding the removal of nitrogen oxides (NOx) and soot from exhaust gases is the low activity of the selective catalytic reduction of NOx at temperatures fluctuating from 150 to 350 °C. The primary goal of this work was to enhance the conversion of NOx and soot simulant by employing a Ag/α-Al2O3 catalyst coupled with dielectric barrier discharge plasma. The results demonstrated that the use of a plasma-catalyst process at low operating temperatures increased the removal of both NOx and naphthalene (soot simulant). Moreover, the soot simulant functioned as a reducing agent for NOx removal, but with low NOx conversion. The high efficiency of NOx removal required the addition of hydrocarbon fuel. In summary, the combined use of the catalyst and plasma (specific input energy, SIE ≥ 60 J/L) solved the poor removal of NOx and soot at low operating temperatures or during temperature fluctuations in the range of 150–350 °C. Specifically, highly efficient naphthalene removal was achieved with low-temperature adsorption on the catalyst followed by the complete decomposition by the plasma-catalyst at 350 °C and SIE of 90 J/L.

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Efficient catalytic removal of diesel soot over Mg substituted K/La0.8Ce0.2CoO3 perovskites with large surface areas

Cited by 58 publications

References 26 publications

Soot Oxidation over CeO₂ or Ag/CeO₂: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst

Soot Oxidation over CeO₂ or Ag/CeO₂: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst

Synthesis and Characterization of A-Site Doped Lamno3 Nano Catalysts and its Application for Soot Oxidation

Plasma-Assisted Selective Catalytic Reduction for Low-Temperature Removal of NOx and Soot Simulant

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Efficient catalytic removal of diesel soot over Mg substituted K/La0.8Ce0.2CoO3 perovskites with large surface areas

Cited by 58 publications

References 26 publications

Soot Oxidation over CeO2 or Ag/CeO2: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst

Soot Oxidation over CeO2 or Ag/CeO2: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst

Synthesis and Characterization of A-Site Doped Lamno3 Nano Catalysts and its Application for Soot Oxidation

Plasma-Assisted Selective Catalytic Reduction for Low-Temperature Removal of NOx and Soot Simulant

Contact Info

Product

Resources

About

Soot Oxidation over CeO₂ or Ag/CeO₂: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst

Soot Oxidation over CeO₂ or Ag/CeO₂: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst