fulltext.study @t Gmail

Synthesis of nano-crystalline La1–xSrxCoO3–δ perovskite oxides by EDTA–citrate complexing process and its catalytic activity for soot oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
40624 45860 2012 7 PDF Available
Title
Synthesis of nano-crystalline La1–xSrxCoO3–δ perovskite oxides by EDTA–citrate complexing process and its catalytic activity for soot oxidation
Abstract

In the present study, La1–xSrxCoO3–δ (x = 0.2, 0.3, 0.4, 0.5) perovskite nano-particles have been successfully prepared by EDTA–citrate complexing process and the catalytic performance was examined for the soot oxidation activity. The physio-chemical properties of these materials were characterized by means of X-ray diffraction (XRD), thermogravimetry–differential thermal (TG–DTA) analysis, BET surface area and X-ray photoelectron spectroscopy (XPS) analysis, scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) analysis. TG–DTA analysis suggested that, in the temperature range of 350–500 °C, the pyrolysis of metal/nitrate/citrate/EDTA complexes takes place and the single phase La1–xSrxCoO3–δ perovskite oxides can be formed at 900 °C and the phase formation has been confirmed by XRD analysis. The surface composition of the samples derived from XPS analysis indicated an impoverishment of lanthanum content at the surface with the increase of strontium content. For La0.6Sr0.4CoO3–δ sample, Sr-enriched perovskite surface has been observed along with the more number of surface oxides (M(Sr, La, Co)O) resulting in higher catalytic activity for soot oxidation than the others.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (127 K)Download as PowerPoint slideHighlights► Soot oxidation over LSC catalysts prepared by EDTA–citrate process was investigated. ► Sr 3d spectra revealed a higher surface component of Sr for LSC64. ► O 1s spectra disclosed more number of surface oxygen species (MO) for LSC64. ► LSC64 showed higher catalytic activity than the other samples.

Keywords
La1–xSrxCoO3–δ perovskite oxides; EDTA–citrate complexing process; Soot oxidation
First Page Preview
Synthesis of nano-crystalline La1–xSrxCoO3–δ perovskite oxides by EDTA–citrate complexing process and its catalytic activity for soot oxidation
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 447–448, 7 December 2012, Pages 100–106
Authors
, , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us