US 11,691,935 B2
Production method for fluoro-ethane and production method for fluoro-olefin
Tomoyuki Iwamoto, Osaka (JP); Takashi Usui, Osaka (JP); Takehiro Chaki, Osaka (JP); Tsubasa Nakaue, Osaka (JP); and Kazuhiro Takahashi, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Jun. 17, 2021, as Appl. No. 17/350,664.
Application 17/350,664 is a continuation of application No. PCT/JP2019/049595, filed on Dec. 18, 2019.
Claims priority of application No. JP2018-237658 (JP), filed on Dec. 19, 2018.
Prior Publication US 2021/0317054 A1, Oct. 14, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C07C 17/354 (2006.01); C07C 17/23 (2006.01); B01J 23/44 (2006.01); C07C 17/25 (2006.01)
CPC C07C 17/23 (2013.01) [B01J 23/44 (2013.01); C07C 17/25 (2013.01); C07C 17/354 (2013.01)] 4 Claims
 
1. A method for producing a product comprising a fluoroethane, wherein the fluoroethane is 1,1,2-trifluoroethane,
the method comprising obtaining the product comprising the fluoroethane from a fluoroethylene comprising chlorotrifluoroethylene, wherein the fluoroethylene is represented by the following formula (3) by a reaction in the presence of catalysts:
CX9F═CX10X11  (3),
 wherein X9, X10, and X11 are the same or different and each represents a hydrogen atom, a fluorine atom, or a chlorine atom,
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, and
the product comprising trifluoroethylene in an amount of 40 mol % or less based on the total amount of the product.