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Investigation of the structure and the redox behavior of gadolinium doped ceria to select a suitable composition for use as catalyst support in the steam reforming of natural gas

Paper ID Volume ID Publish Year Pages File Format Full-Text
43583 45978 2007 9 PDF Available
Title
Investigation of the structure and the redox behavior of gadolinium doped ceria to select a suitable composition for use as catalyst support in the steam reforming of natural gas
Abstract

Gadolinium doped cerias with a gadolinium content in the range 0≤xGd≤0.50≤xGd≤0.5 were synthesized using a glycine-nitrate combustion process. The resulting materials are weak agglomerates showing low specific surface area, no microporosity and are stable against sintering. While the addition of gadolinium enhances the surface reactivity and thus the dynamic oxygen exchange capacity (OEC), it depresses bulk reduction. As a result, the total oxygen storage capacity (OSC) is much lower compared to pure ceria. For small-scale hydrogen production using the steam-reforming process, these support properties are expected to be beneficial. The materials with an intermediate gadolinium content of xGd≈0.2xGd≈0.2–0.25 are determined to be especially suitable for use as catalytic support material in this application.

Graphical abstractGadolinium doped cerias in the range 0

Keywords
Ceria; Gadolinium; Combustion synthesis; Structure; OSC; OEC; Redox behavior
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Investigation of the structure and the redox behavior of gadolinium doped ceria to select a suitable composition for use as catalyst support in the steam reforming of natural gas
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 325, Issue 1, 30 May 2007, Pages 41–49
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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