Synthesis and Performance of Transition Metal Based Perovskite Catalysts for Diesel Soot Oxidation

In present investigation, the effect of the intrinsic factors including the structure, nature of B-site ions in the four systems LaCoO3, LaNiO3, LaFeO3 and LaZnOy perovskite-type oxide catalysts, and the external factors of catalyst-soot contacting model, and the operating parameters such as air flow rate and temperature on the catalytic performances for the combustion of diesel soot were reported. The catalysts were characterized by XRD, FTIR, SEM, and N2-sorption. Activity of the catalyst for soot oxidation was evaluated on the basis of light off temperature characteristics Ti, T50 and T100. LaCoO3, LaFeO3 and LaNiO3 samples possessed the perovskite structure, and gave high activities for the total oxidation of soot below 445 oC. Whereas, LaZnOy catalyst was not indicating the ABO3 perovskite structure and existed as a mixture of metal oxides. The activity order in decreasing sequence of the catalyst was as follows: LaCoO3>LaFeO3>LaNiO3>LaZnOy. SEM pictures of the perovskite samples showed that the particles sizes were close to 100 nm. Copyright © 2017 BCREC GROUP. All rights reservedReceived: 2nd March 2017; Revised: 16th June 2017; Accepted: 12nd July 2017; Available online: 27th October 2017; Published regularly: December 2017How to Cite: Mishra, A., Prasad, R. (2017). Synthesis and Performance of Transition Metal Based Perovskite Catalysts for Diesel Soot Oxidation. Bulletin of Chemical Reaction Engineering & Catalysis, 12 (3): 469-477 (doi:10.9767/bcrec.12.3.968.469-477)

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Copper doped BaMnO3 perovskite catalysts for NO oxidation and NO2-assisted diesel soot removal

RSC Advances ◽

10.1039/c7ra04980c ◽

2017 ◽

Vol 7 (56) ◽

pp. 35228-35238 ◽

Cited By ~ 21

Author(s):

Verónica Torregrosa-Rivero ◽

Vicente Albaladejo-Fuentes ◽

María-Salvadora Sánchez-Adsuar ◽

María-José Illán-Gómez

Keyword(s):

Perovskite Structure ◽

Active Catalyst ◽

Soot Oxidation ◽

Diesel Soot ◽

Redox Properties ◽

No Oxidation ◽

Perovskite Catalysts

BaMn0.7Cu0.3O3 is the most active catalyst for NO2 generation and soot oxidation. This behavior is a result of the enhancement of the redox properties of the catalyst due to the replacement of Mn(iii)/Mn(iv) by Cu(ii) in the perovskite structure.

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Application of NOX storage/release materials based on alkali-earth oxides supported on Al2O3 for high-temperature diesel soot oxidation

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2008.11.013 ◽

2009 ◽

Vol 88 (3-4) ◽

pp. 263-271 ◽

Cited By ~ 52

Author(s):

A.L. Kustov ◽

M. Makkee

Keyword(s):

High Temperature ◽

Soot Oxidation ◽

Diesel Soot ◽

Nox Storage ◽

Alkali Earth ◽

Diesel Soot Oxidation

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A novel catalyst for diesel soot oxidation

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2005.05.011 ◽

2005 ◽

Vol 61 (3-4) ◽

pp. 334-345 ◽

Cited By ~ 43

Author(s):

D. Uner ◽

M.K. Demirkol ◽

B. Dernaika

Keyword(s):

Soot Oxidation ◽

Diesel Soot ◽

Diesel Soot Oxidation ◽

Novel Catalyst

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Synthesis and Catalytic Activity Studies of V/K/Ca and V/Ks/Ce Based Catalysts for Diesel Soot Oxidation

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.1995 ◽

2007 ◽

Vol 336-338 ◽

pp. 1995-1998

Author(s):

Yong Heng Zhang ◽

Jian Zhong Xue

Keyword(s):

Catalytic Activity ◽

Catalytic Oxidation ◽

Amorphous Phase ◽

Porous Alumina ◽

Soot Oxidation ◽

Diesel Soot ◽

Oxidation Activity ◽

Diesel Soot Oxidation ◽

Oxidation Onset Temperature ◽

Catalyst Systems

The catalysts based on V/K/Ca and V/Ks/Ce systems for diesel soot catalytic oxidation were synthesized onto the porous alumina substrates. Both catalyst systems showed a good catalytic oxidation activity. The V/K/Ca system exhibited the lowest oxidation onset temperature (OOT) of about 359oC with a composition of V/K/Ca =1:1:0.1 where the V and Ca and/or K elements could form a kind of amorphous phase that determined the catalytic activity. The V/Ks/Ce system displayed the lowest OOT of about 350oC with a composition of V/Ks/Ce = 1:2:0.1 where the K2SO4 and K5V2O3(SO4)4 phases could contribute most to the catalytic activity.

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Investigation of Copper-supported Ceria Nanofibers for Catalytic Oxidation of Diesel Soot

10.21203/rs.3.rs-295391/v1 ◽

2021 ◽

Author(s):

Dan Bahadur Pal ◽

Anupama Mishra

Keyword(s):

Photoelectron Spectroscopy ◽

Fixed Bed ◽

Tubular Reactor ◽

Soot Oxidation ◽

Diesel Soot ◽

Air Flow Rate ◽

Reaction Conditions ◽

Tight Contact ◽

Diesel Soot Oxidation ◽

Working Parameters

Abstract In the present research, CeO2 and CuO/CeO2 nanofibers were synthesized by electrospinning at 12 kV DC by maintaining a tip to collector distance of 10 cm. The morphology of the as-synthesized nanofibers was determined by scanning electron microscopy, and their elemental composition was verified by X-ray photoelectron spectroscopy. The activity of the prepared samples for diesel soot oxidation was determined in a bench-scale fixed bed tubular reactor, and effluent gases were analyzed by online gas chromatography. The variations of working parameters (air flow rate, catalyst-soot ratio, catalyst-soot contact type) were evaluated in a range to optimized reaction conditions for diesel soot oxidation. The catalyst with 40% CuO/CeO2 had the highest surface area, the smallest crystallite size, and the best activity for diesel soot oxidation (tight contact) at Tf = 318oC.

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Dipole-moment-driven diesel soot oxidation in the presence of alkali metal chlorides

Catalysis Science & Technology ◽

10.1039/c8cy00031j ◽

2018 ◽

Vol 8 (4) ◽

pp. 970-974 ◽

Cited By ~ 1

Author(s):

Hui Chen ◽

Yexin Zhang ◽

Jian Zhang

Keyword(s):

Electron Transfer ◽

Dipole Moment ◽

Alkali Metal ◽

Dipole Moments ◽

Soot Oxidation ◽

Diesel Soot ◽

Alkali Metal Chlorides ◽

Metal Chlorides ◽

Diesel Soot Oxidation

The dipole moments of alkali metal chlorides drive the oxidation of soot by promoting electron transfer, justifying their excellent activities despite their poor redox abilities.

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