fulltext.study @t Gmail

Preparation, characterisation and N2O decomposition activity of honeycomb monolith-supported Rh/Ce0.9Pr0.1O2 catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
46717 46446 2011 8 PDF Available
Title
Preparation, characterisation and N2O decomposition activity of honeycomb monolith-supported Rh/Ce0.9Pr0.1O2 catalysts
Abstract

Rh/Ce0.9Pr0.1O2 active phases have been loaded by sequential impregnation into cordierite honeycomb monoliths following the procedure (i) Ce + Pr nitrates impregnation + calcinations and (ii) Rh nitrate impregnation + calcination. The supported catalysts have been characterised by XRD, Raman Spectroscopy, SEM–EDS, TEM–EDS and H2-TPR, and tested for N2O decomposition. Rh is selectively attached to the mixed oxide Ce0.9Pr0.1O2, being 0.2 wt.% the optimum content of Rh. The calcination procedure significantly affects the supported catalyst features. The best catalyst was prepared by flash calcination (introducing the impregnated monolith in a previously heated furnace). Flash calcination yields smaller Rh particles and lowers the temperature for surface Rh–Ce–Pr entities reduction in comparison to ramp calcination, improving both the distribution of active phases on the cordierite substrate and the catalytic activity for N2O decomposition.

Graphical abstract.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights• Flash calcination (impregnated monoliths are introduced in a previously heated furnace) is better than ramp calcination. • Flash calcination improves the distribution of active phases on the cordierite substrate. • Flash calcination produces smaller Rh particles and better noble metal–CePr mixed oxide interaction. • Flash calcination improves the reduction of surface Rh–Ce–Pr entities. • Flash calcination improves the catalytic activity for N2O decomposition.

Keywords
N2O decomposition; Rh; Ceria; Mixed oxide; Honeycomb monolith; Cordierite
First Page Preview
Preparation, characterisation and N2O decomposition activity of honeycomb monolith-supported Rh/Ce0.9Pr0.1O2 catalysts
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 B: Environmental - Volume 107, Issues 1–2, 31 August 2011, Pages 18–25
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