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Characteristics in oxygen storage capacity of ceria–zirconia mixed oxides prepared by continuous hydrothermal synthesis in supercritical water

Paper ID Volume ID Publish Year Pages File Format Full-Text
49046 46543 2007 7 PDF Available
Title
Characteristics in oxygen storage capacity of ceria–zirconia mixed oxides prepared by continuous hydrothermal synthesis in supercritical water
Abstract

Continuous hydrothermal synthesis in supercritical water (supercritical synthesis) is a method to prepare metal oxide nanoparticles rapidly and continuously using supercritical water. Highly crystallized nanoparticles of homogeneous complex metal oxides as well as single metal oxides could be produced easily by the supercritical synthesis. Ceria–zirconia mixed oxide is widely used as oxygen storage material, for example, in the three-way catalysts for the clean up of automotive gases. Ceria–zirconia mixed oxides were prepared by the new supercritical synthesis method and also by the conventional co-precipitation method. The characteristics in oxygen storage capacity (OSC) of ceria–zirconia mixed oxide prepared by the supercritical synthesis were compared with those by the co-precipitation method. It was confirmed through physical characterizations with N2 adsorption, SEM, TPR and O2-uptake that the supercritical synthesis could lead to ceria–zirconia mixed oxides with higher thermal stability and better OSC due to its morphology.

Keywords
Ceria–zirconia mixed oxide; Co-precipitation; Hydrothermal synthesis; Supercritical water; Oxygen storage capacity (OSC); Thermal stability
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Characteristics in oxygen storage capacity of ceria–zirconia mixed oxides prepared by continuous hydrothermal synthesis in supercritical water
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 71, Issues 1–2, 8 February 2007, Pages 57–63
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