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The catalytic activity of CuO–CeO2 mixed oxides for diesel soot oxidation with a NO/O2 mixture

Paper ID Volume ID Publish Year Pages File Format Full-Text
52491 46875 2007 5 PDF Available
Title
The catalytic activity of CuO–CeO2 mixed oxides for diesel soot oxidation with a NO/O2 mixture
Abstract

Copper doped ceria and ceria–zirconia mixed oxides were synthesized using the citric acid sol–gel method. The temperature-programmed oxidation (TPO) results showed that the Cu modification improved the low-temperature activity and the selectivity to CO2 of ceria for soot oxidation in the presence of NO and excess oxygen even after ageing at 800 °C for 20 h in flow air. Meanwhile, not only the segregation of Cu and sintering of CuO, but also the separation of Ce- and Zr-rich phases worsened the activity of the Cu–Ce–Zr catalyst after the high-temperature calcination.

Keywords
Copper oxide–ceria; Soot; Selectivity; Nitrate storage capacity; Thermal stability
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The catalytic activity of CuO–CeO2 mixed oxides for diesel soot oxidation with a NO/O2 mixture
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 12, December 2007, Pages 2110–2114
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
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Full-text PDF Download
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