CF₄ decomposition without water over a solid ternary mixture consisting of NaF, silicon and one metal oxide

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• 作者：Xiufeng Xu  ; ;   ; ^{xxf@ytu.edu.cn} ; Xianjun Niu ; Jie Fan ; Yanan Wang ; Ming Feng
• 关键词：CF₄ decomposition without water ; solid ternary mixture ; defluorinated reagent ; reactivity
• 刊名：Journal of Natural Gas Chemistry
• 出版年：2011
• 出版时间：September 2011
• 年：2011
• 卷：20
• 期：5
• 页码：543-546
• 全文大小：346 K

文摘

A solid ternary mixture consisting of NaF, silicon and one of the metal oxides such as AI₂O₃, MgO, CaO, SrO, BaO was prepared and used as a defluorinated reagent for CF₄ decomposition. The results show that the initial conversion of CF₄ reached 100 % over NaF-Si-MgO and NaF-Si-CaO at 850 ¡ãC, and the reagent with NaF/Si/MgO molar ratio of 33/34/33 exhibited a high reactivity with a full conversion of CF₄ lasting for 57 min. The plausible paths of CF₄ decomposition over NaF-Si-Al₂0₃, NaF-Si-MgO, NaF-Si-CaO, NaF-Si-SrO and NaF-Si-BaO are proposed.