Preparation and Application of Perovskite Catalysts for Diesel Soot Emissions Control: An Overview

Mishra, Anupama; Прасад, Рам

doi:10.1080/01614940.2014.866438

Cited by 110 publications

(52 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be seen from the table that the various perovskite have low specific surface area (7-15m 2 /g) and Average pore size (13)(14)(15)(16)(17)(18)(19)(20) Å), which is in expected range considering the high synthesis temperature in accordance with references [32,33]. The catalysts formed at 600 o C showed the highest surface area irrespective of the preparation methods.…”

Section: Textural Characterization Of the Catalystssupporting

confidence: 52%

“…The noble metal catalysts are expensive and due to their scarcity to further price increase upon increasing demand. As an alternative to noble metals, recently oxides of transition metal, lanthanide group and alkaline earth metal are widely studied for soot oxidation [14][15][16][17]. Neeft et al [18] arranged few single-component metal oxides for their relative activities in the oxidation of carbonaceous material in following order: La > Mn > Sb > Bi > Ca > Cu > Ag > Ni > Cr > Zr > Ba > Zn.…”

Section: Canadian Chemical Transactionsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Preparation Method and Calcination Temperature on LaCoO3 Perovskite Catalyst for Diesel Soot Oxidation

Mishra¹,

Прасад

2015

Can Chem Trans

View full text Add to dashboard Cite

Abstract:The present work attempts to scan the effect of preparation methods (co-precipitation, sol-gel and solution combustion synthesis) and calcination temperature (600-800 o C) on the efficiency of LaCoO 3 catalysts for soot oxidation. All the catalysts were highly selective towards CO 2 as no CO was detected in the flue gas. Catalyst produced following co-precipitation method revealed total soot oxidation at the lowest temperature (T f = 370 o C) than other two catalysts prepared by sol-gel (T f = 420 o C) and solution combustion synthesis (T f = 456 o C) methods. Irrespective of the preparation methods, 750 o C was the optimum calcination temperature of the precursors resulting LaCoO 3 catalysts which exhibited maximum activity for soot oxidation. In addition, the results showed that the specific surface areas of the catalysts decreased with increasing calcination temperature beyond 750 o C and consequently decreasing the activity of the catalyst.

show abstract

Section: Textural Characterization Of the Catalystssupporting

confidence: 52%

Section: Canadian Chemical Transactionsmentioning

confidence: 99%

Effect of Preparation Method and Calcination Temperature on LaCoO3 Perovskite Catalyst for Diesel Soot Oxidation

Mishra¹,

Прасад

2015

Can Chem Trans

View full text Add to dashboard Cite

show abstract

“…The soot was collected from the recipient walls and then dried in an oven an overnight at 120 °C [17].…”

Section: Soot Preparationmentioning

confidence: 99%

Simultaneous Control of NOx-Soot by Substitutions of Ag and K on Perovskite (LaMnO3) Catalyst

Dhal

Dey

Прасад

2017

Bull. Chem. React. Eng. Catal.

View full text Add to dashboard Cite

The different Ag and K substituted perovskite catalysts including base catalyst were LaMnO3 by the solid state method and the diesel soot was prepared in the laboratory. Their structures and physicochemical properties were characterized by X-ray diffraction (XRD), BET, SEM, H2-TPR, and XPS techniques. The Ag Substituted at A-site perovskite structured catalysts are more active than other type of catalysts for the simultaneous soot-NOx reaction, When Ag and K are simultaneously introduced into LaMnO3 catalyst, soot combustion is largely accelerated, with the temperature (Tm) for maximal soot conversion lowered by at least 50 °C, moreover, NOx reduction by soot is also facilitated. The high activity of La0.65Ag0.35MnO3 perovskite catalyst is attributed to presence of metallic silver in the catalyst. The activity order of Ag doped LaMnO3 is as follows La0.65Ag0.35MnO3 > La0.65Ag0.2MnO3 > La0.65Ag0.4MnO3 > La0.65Ag0.1MnO3. The dual substitution of silver and potassium in place of La in LaMnO3 gives better activity than only silver doped catalyst. In a series of La0.65AgxK1-xMnO3, the optimum substitution amount of K is for x=0.25. The single and doubled substituted perovskite catalyst proved to be effective in the simultaneous removal of NOx and soot particulate, the two prevalent pollutants in diesel exhaust gases in the temperature range 350-480 °C.

show abstract

“…The double perovskite type composite metal oxide is a kind of perovskite-type metal oxide with special crystal structure and flexible "chemical tailoring" [8]. In the perovskite type metal oxide ABO 3 structure, And the B-site ion is centered around the octahedron of six oxygen species [9].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Photocatalytic Properties of La2CuFeO6 Nanofibers by an Electrospinning Method

Shi¹,

Cao²,

Wang³

et al. 2017

dteees

View full text Add to dashboard Cite

Abstract. La 2 CuFeO 6 nanofibers photocatalytic material was successfully prepared by electrospinning. La 2 CuFeO 6 nanofibers with an average diameter of 170 nm, which were connected to each other by rhombic La 2 CuFeO 6 nanoparticles, had stable one-dimensional structure. Through the excitation of ultraviolet light and oxalic acid coupling, the La 2 CuFeO 6 nanofibers as the catalyst for water-splitting reaction producing hydrogen, the average hydrogen production rate is 760.76µmol h -1 · g -1 .

show abstract

Preparation and Application of Perovskite Catalysts for Diesel Soot Emissions Control: An Overview

Cited by 110 publications

References 83 publications

Effect of Preparation Method and Calcination Temperature on LaCoO3 Perovskite Catalyst for Diesel Soot Oxidation

Effect of Preparation Method and Calcination Temperature on LaCoO3 Perovskite Catalyst for Diesel Soot Oxidation

Simultaneous Control of NOx-Soot by Substitutions of Ag and K on Perovskite (LaMnO3) Catalyst

Preparation and Photocatalytic Properties of La2CuFeO6 Nanofibers by an Electrospinning Method

Contact Info

Product

Resources

About