氧化锆(ZrO<sub>2</sub>)的热、化学性质与应用-中国材料进展

文章信息/Info

Title:: Thermal, chemical properties of zirconia(ZrO₂) and their applications

Author(s):: OUYANG Jing; ZHOU Zheng; LUN Huilin; XIE Yalin; YANG Hua-min; Department of Inorganic Materials, School of Minerals Processing & Bioengineering

摘要:: 本部分重点分析了ZrO₂的热性质、化学稳定性和其理论基础。ZrO₂的导热系数极低是其可用于热障涂层的基本原理，分析了热障涂层的结构和制备方法，说明了ZrO₂作为热障涂层材料的优异特性。分析了ZrO₂的表面能与表面酸性强度，表面酸位来源、固体超强酸的原理、性质、制备方法和应用领域。ZrO₂基催化材料分类为纯ZrO₂催化剂、负载型催化剂和复合型催化剂，ZrO₂的化学稳定性好是其作为催化剂材料基体的根本原因。列举了ZrO₂基固体超强酸的反应方程式，ZrO₂复合型催化剂具有更好的催化性能，详述了以CeO₂-ZrO₂固溶体作为三效催化剂的机理和进展。相关方法和原理可为ZrO₂的热学性质研究提供系统的理论知识，将有助于理解和应用ZrO₂的催化原理和表面性质，并提供系统的相关知识。

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 ZrO₂based 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.