PROCESSES FOR PRODUCING 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE AND 2,3,3,3-TETRAFLUOROPROPENE
申请人:KAWAGUCHI Satoshi
公开号:US20110237846A1
公开(公告)日:2011-09-29
To provide processes for efficiently and economically producing 2-chloro-1,1,1,2-tetrafluoropropane (R244bb) and 2,3,3,3-tetrafluoropropene (R1234yf) in an industrially practical manner.
A process for producing 2-chloro-1,1,1,2-tetrafluoropropane, which comprises a chlorination step of reacting 1,2-dichloro-2-fluoropropane and chlorine in the presence of a solvent under irradiation with light to obtain 1,1,1,2-tetrachloro-2-fluoropropane, and a fluorination step of reacting the 1,1,1,2-tetrachloro-2-fluoropropane obtained in the chlorination step and hydrogen fluoride in the presence of a catalyst to obtain 2-chloro-1,1,1,2-tetrafluoropropane, and a process for producing 2,3,3,3-tetrafluoropropene, which comprises dehydrochlorinating it in the presence of a catalyst.
提供一种在工业上实用的方式高效经济地生产2-氯-1,1,1,2-四氟丙烷(R244bb)和2,3,3,3-四氟丙烯(R1234yf)的工艺。
一种生产2-氯-1,1,1,2-四氟丙烷的工艺,包括在溶剂存在下,在光照作用下,通过氯化步骤使1,2-二氯-2-氟丙烷和氯气反应以获得1,1,1,2-四氯-2-氟丙烷,以及通过在氟化催化剂存在下,使氯化步骤中获得的1,1,1,2-四氯-2-氟丙烷与氢氟酸反应以获得2-氯-1,1,1,2-四氟丙烷的氟化步骤,以及一种生产2,3,3,3-四氟丙烯的工艺,包括在催化剂存在下进行脱氯化。