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Characterization of uniform, nanodispersed NOx storage catalyst materials synthesized by successive ionic layer deposition

Paper ID Volume ID Publish Year Pages File Format Full-Text
51517 46845 2010 5 PDF Available
Title
Characterization of uniform, nanodispersed NOx storage catalyst materials synthesized by successive ionic layer deposition
Abstract

A dispersed phase of barium oxide (BaO) supported on alumina has been shown to be primarily responsible for NOx storage in practical lean NOx trap catalysts. Conventional impregnation based catalyst loading techniques generate a mixture of dispersed and less active bulk-like BaO phases on alumina, with the bulk-like phase increasing as weight loading increases. Samples of equivalent BaO weight loading on fused alumina were prepared by successive ionic layer deposition (SILD) and wet impregnation. NO2 temperature programmed desorption experiments demonstrate that SILD is uniquely capable of selectively synthesizing uniform, nanodispersed BaO rafts with high surface coverage. These nanodispersed SILD structures show remarkable thermal stability under high operating temperatures up to 650 °C.

Keywords
NOx storage; Barium oxide; Dispersion; Successive ionic layer deposition (SILD); Nanolayer
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Characterization of uniform, nanodispersed NOx storage catalyst materials synthesized by successive ionic layer deposition
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 10, 11 May 2010, Pages 896–900
Authors
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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