Department of Inorganic Materials, School of Minerals Processing & Bioengineering
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DOI:
10.7502/j.issn.1674-3962.2014.06.08
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Abstract:
We reviewed in this part the thermal properties, chemical stability and their mechanism. The ultra-low thermal conducting coefficient of ZrO2 is the key for its application in thermal barrier coatings, the structure and synthesis methodology were introduced, and excellencies of ZrO2 based thermal barrier coatings were described. The surface energy, acidic positions and their originations in ZrO2, the principle, nature, method of preparation and application areas of ZrO2 based super-acids were analyzed. ZrO2 based catalysts can be catalogued into pure ZrO2, loaded and composite ones, respectively. The fairly good chemical stability of ZrO2 is the basic for catalytic application. Some typical catalytic reactions were also listed, elaborating that the composites-based ZrO2 has better catalytic performance. Mechanisms and applications of CeO2-ZrO2 solid solutions as three way catalysts were also introduced. This review provides the systematic knowledge of thermal and catalytic applications of ZrO2, which can help understanding their mechanisms and surface properties.