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Titanium-doped nanocomposite of Al2O3 and ZrO2–TiO2 as a support with high sulfur durability for NOx storage-reduction catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
48063 46490 2009 6 PDF Available
Title
Titanium-doped nanocomposite of Al2O3 and ZrO2–TiO2 as a support with high sulfur durability for NOx storage-reduction catalyst
Abstract

A nanocomposite of Al2O3 and a ZrO2–TiO2 solid solution (AZT) doped with Ti (Ti–AZT) was synthesized as a support for a NOx storage-reduction (NSR) catalyst in order to achieve sulfur durability. Ti–AZT maintained the original structure of AZT after the Ti doping step and exhibited lower basicity. Energy dispersive X-ray spectroscopy revealed that the Ti concentration on the Al2O3 particles was more than 10 at.% on average for a sample containing 3.3 at.% of doped titanium. Doped titanium was homogeneously distributed on the surface without the formation of discrete TiO2 particles. SO2-temperature programmed desorption at less than 823 K indicated that the catalyst containing Ti–AZT had larger sulfur desorption than that containing AZT. After sulfur aging tests, the Ti–AZT catalyst provided a large amount of NOx storage. The improved sulfur durability in the NSR catalyst resulted from the presence of TiO2 as a Al2O3–TiO2 solid solution in Ti–AZT.

Keywords
Titanium-doped; Nanocomposite; Solid solution; Sulfur durability; NOx storage-reduction catalyst
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Titanium-doped nanocomposite of Al2O3 and ZrO2–TiO2 as a support with high sulfur durability for NOx storage-reduction catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 86, Issues 1–2, 2 February 2009, Pages 63–68
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