| 摘要 |
PROBLEM TO BE SOLVED: To enable continuous decomposition of a fluorine-contg. compd., especially a perfluorocompd. by bringing a gaseous fluorine-contg. compd. into contact with molecular oxygen and water in the presence of a catalyst prepared by depositing inorg. acid on a carrier. SOLUTION: When a gaseous fluorine-contg. compd. (such as perfluoro compds. and fluorinated hydrocarbons) is to be decomposed, the fluorine-contg. compd. is brought into contact with molecular oxygen and water in the presence of a catalyst which is prepared by depositing an inorg. acid on a carrier. As for the inorg. acid, sulfuric acid, phosphoric acid, and as for the carrier, for example, a alumina such as γ-alumina are preferably used. The shape of the alumina is not limited and properly selected according to the reactor and the reaction method. The inorg. acid is deposited on the carrier, for example, by 0.01 to 20 wt.% of the carrier, and especially preferably 0.1 to 10 wt.%. As for the molecular oxygen, a gas prepared by diluting oxygen gas with inert gas such as nitrogen can be used, however, air is preferably used. |
