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Pd ion substituted CeO2: A superior de-NOx catalyst to Pt or Rh metal ion doped ceria

Paper ID Volume ID Publish Year Pages File Format Full-Text
52259 46867 2008 5 PDF Available
Title
Pd ion substituted CeO2: A superior de-NOx catalyst to Pt or Rh metal ion doped ceria
Abstract

Pd, Pt and Rh ion doped CeO2, Ce1−xMxO2−δ (M = Pd2+, Pt2+, Rh3+) were synthesized by solution combustion synthesis method and the deNOx activity was investigated by NO + CO reaction. Ionically dispersed Pd in CeO2 was found to have better catalytic activity than ionically dispersed Pt or Rh in CeO2. High rates of NO conversion and high selectivity of N2 is observed over Ce0.98Pd0.02O2−δ. A bi-functional reaction mechanism is proposed, which fits very well with the experimental results. The oxide ion vacancy present in the CeO2 matrix seems to play an important role for product selectivity and high rate of reaction.

Keywords
Ionic substitution; de-NOx; Rate; N2 selectivity; Kinetic modeling
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 5, 20 March 2008, Pages 811–815
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
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