fulltext.study @t Gmail

The synthesis and catalytic performances of three-dimensionally ordered macroporous perovskite-type LaMn1−xFexO3 complex oxide catalysts with different pore diameters for diesel soot combustion

Paper ID Volume ID Publish Year Pages File Format Full-Text
55294 47046 2012 8 PDF Available
Title
The synthesis and catalytic performances of three-dimensionally ordered macroporous perovskite-type LaMn1−xFexO3 complex oxide catalysts with different pore diameters for diesel soot combustion
Abstract

Polymethyl methacrylate (PMMA) microspheres with diameters of 300–800 nm were synthesized by a modified emulsifier-free emulsion polymerization technique with water–oil biphase double initiators. The obtained PMMA microspheres did not aggregate and their size distribution was narrow. Three-dimensionally ordered macroporous (3DOM) LaMn1−xFexO3 (x = 0, 0.05, 0.1, 0.15) with different pore diameters were prepared by the means of colloidal crystal template method using PMMA microspheres with different diameters as templates. The microspheres and 3DOM catalysts were characterized by means of powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transformation infrared spectroscopy (FT-IR), nitrogen adsorption–desorption and laser particle size analysis. All the catalysts possessed 3DOM structure with hexagonal well-ordered array. Their macroporous diameters were in the range of 140–600 nm. The catalytic performances of the catalysts for diesel soot combustion were investigated by temperature-programmed oxidation (TPO) reaction. The 3DOM LaMn1−xFexO3 catalysts had good catalytic performances for diesel soot combustion, and their catalytic activities increased with the increasing of pore diameters.

Graphical abstractThe 3DOM LaMn1−xFexO3 perovskite-type oxide catalysts with different macropore diameters were successfully synthesized by seminal emulsion polymerization technique, and they showed good catalytic performances for soot combustion.Figure optionsDownload full-size imageDownload high-quality image (177 K)Download as PowerPoint slideHighlights► PMMA microspheres with particle diameter above 600 nm are synthesized. ► Perovskite-type oxides with macropore diameters above 400 nm are prepared. ► 3DOM LaMn1−xFexO3 catalysts have good catalytic activity for soot oxidation.

Keywords
Three-dimensionally ordered macroporous oxide; Perovskite catalyst; Pore diameter; PMMA; Colloid crystal template method; Soot combustion
First Page Preview
The synthesis and catalytic performances of three-dimensionally ordered macroporous perovskite-type LaMn1−xFexO3 complex oxide catalysts with different pore diameters for diesel soot combustion
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: Catalysis Today - Volume 191, Issue 1, 15 September 2012, Pages 146–153
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