期刊
ULTRASONICS SONOCHEMISTRY
卷 32, 期 -, 页码 173-180出版社
ELSEVIER
DOI: 10.1016/j.ultsonch.2016.03.008
关键词
CaAlFe-layered triple hydroxides; IR; NEXAFS-EXAFS; Thermogravimetric analysis; Oxyhalides
资金
- National Science Fund of Hungary [NKFI 106234]
The combination of mechanochemical and ultrasonic treatment was applied to synthesize CaAlFe-layered triple hydroxides with carbonate or chloride anions in the interlamellar space. The optimal parameters of the preparation were explored by altering the initial ratio of the metal ions and the temperature of ultrasonic irradiation. The resulting triple hydroxides were characterized by X-ray diffractometry, infrared and X-ray absorption spectroscopies, thermogravimetric analysis and scanning electron microscopy. The products were close-to-phase-pure CaAlFe-layered triple hydroxides. Elevation of the temperature transformed the CaAlFe-Cl--layered triple hydroxide to rare oxyhalides (Ca2FeO3Cl and Ca12Al14O32Cl2). (C) 2016 Elsevier B.V. All rights reserved.
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