Reversible Phase Transformation Ionic Liquids Based on Ternary Keggin Polyoxometalates

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• 作者：Yunyan Li ; Xuefei Wu ; Qingyin Wu ; Hong Ding ; Wenfu Yan
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：August 20, 2014
• 年：2014
• 卷：53
• 期：33
• 页码：12920-12926
• 全文大小：392K
• ISSN：1520-5045

文摘

Two new polyoxometalate-based ionic liquids, [TBTP]₄PW₁₁VO₄₀ and [TBTP]₄PMo₁₁VO₄₀, composed of ternary Keggin polyoxometalates and tetraalkylphosphonium cation have been synthesized and characterized. Their layered structures, thermal stability, conductive performance and electrochemical properties are investigated. The two compounds possess layered structures, and both can exhibit a reversible phase transformation process below 100 掳C. Their ionic conductivities are dependent on temperature and follow the Arrhenius behavior. Cyclic voltammetry is carried out to study their electrochemical properties in organic solution. The potential values of redox waves indicate that the oxidability of [TBTP]₄PMo₁₁VO₄₀ is greater than that of [TBTP]₄PW₁₁VO₄₀.