Characteristics, Thermodynamics, and Preparation of Nanocaged 12CaO·7Al2O3 and Its Derivatives

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• 作者：Songyi Liao ; Rui Yao ; Xiaoyu Chen ; Guangrong Wang and Feng Zheng
• 刊名：International Journal of Applied Ceramic Technology
• 出版年：2016
• 出版时间：September/October 2016
• 年：2016
• 卷：13
• 期：5
• 页码：844-855
• 全文大小：685K
• ISSN：1744-7402

文摘

Crystal structures, characteristics, and preparations of 12CaO·7Al₂O₃ family and CaO–Al₂O₃ (C–A) system have been reviewed in detail with relevant thermodynamic parameters being assessed or recalculated. 12CaO·7Al₂O₃ (shortened as C12A7) can form several derivatives of type C12A7:Mⁿ⁻ or C12A7–Mⁿ⁻ through replacing so-called “free oxygen ion” by many anions including OH⁻, H⁻, O⁻, O2−, F⁻, Cl⁻, and e⁻ in their cages, or being adopted by rare earth metals or alkaline earth metal oxides at cation sites (Ca²⁺ or Al³⁺). These doped C12A7 derivatives show unique material properties of transparent conduction, catalysis, and antibacterial with potential applications in fast ion conductors, optoelectronics, oxidants, and catalysts etc.