Production method for fluoro-ethane and production method for fluoro-olefin

A method for producing a fluoroolefin, the method comprising:

• conducting a reaction of a fluoroethylene represented by the following formula (3):
• CX9F═CX10X11 (3),
• 10 wherein X9, X10, and X11 are the same or different and each represents a hydrogen atom, a fluorine atom, or a chlorine atom,
• in the presence of catalysts to obtain a product comprising a fluoroethane, wherein the fluoroethane is 1,1,2-trifluoroethane,
• wherein each catalyst is formed by supporting a noble metal on a carrier;
• a reactor for performing the reaction is filled with a catalyst having a noble metal concentration of C1 mass % based on the entire catalyst, and a catalyst having a noble metal concentration of C2 mass % based on the entire catalyst to form an upstream portion and a downstream portion, respectively, C1<C2, 0.01≤C1≤10, and 1≤C2≤15;
• the reaction is performed by bringing the fluoroethylene represented by formula (3) and hydrogen gas into contact with the upstream portion and the downstream portion in this order;
• the fluoroethylene represented by formula (3) comprising chlorotrifluoroethylene, and the product comprising trifluoroethylene in an amount of 40 mol % or less based on the total amount of the product;
• and conducting a dehydrofluorination reaction of the fluoroethane to obtain the fluoroolefin.