Decomposition of chlorofluorocarbons over metal phosphate catalysts part I. Decomposition of CCI2F2 over metal phosphate catalysts

Yusaku Takita, Maiko Ninomiya, Rie Matsuzaki, Hironori Wakamatsu, Hiroyasu Nishiguchi, Tatsumi Ishihara

研究成果: Contribution to journalArticle査読

35 被引用数 (Scopus)

抄録

In the decomposition of chlorofluorocarbons (CFCs), HF produced in the decomposition reacts with and deactivates the catalyst. Metal phosphates were chosen as the catalyst from ΔG calculations. Zr-P-O and AlPO4 showed high catalytic activity for the decomposition of CCl2F2 above 350°C. The essential reaction of the decomposition is hydrolysis. On increasing the CCl2F2 concentration in the feed, the formation of CClF3 as a by-product is promoted. ALPO4 has both weak acid sites and those of intermediate strength and these acid sites may participate in the hydrolysis of CCl2F2. No reaction between AlPO4 and formed HF was observed during 1000 h reaction at 400°C, ALPO4 promises to be of practical use.

本文言語英語
ページ(範囲)2367-2372
ページ数6
ジャーナルPhysical Chemistry Chemical Physics
1
9
DOI
出版ステータス出版済み - 5 1 1999
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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