Azeotropic composition of carbonyl fluoride and carbon dioxide

The invention discloses an azeotropic or azeotrope-like composition containing an effective amount of carbonyl fluoride and carbon dioxide, and a method for separating and purifying carbonyl fluoridefrom a mixture containing carbonyl fluoride and carbon dioxide. A mixture of carbonyl fluoride and carbon dioxide is separated to form azeotropic or azeotrope-like distillate which can be used as a reaction intermediate. 本发明公开了一种包含有效量的碳酰氟和二氧化碳的共沸或类共沸组合物，以及从含有碳酰氟及二氧化碳的混合物中分离提纯碳酰氟的方法。碳酰氟与二氧化碳的混合物分离形成共沸或类共沸馏出物可作为反应中间体。