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    • 67. 发明申请
    • A METHOD FOR MITIGATING HFC-245CB FORMATION DURING HCFO-1233XF HYDROFLUORINATION TO HCFC-244BB
    • 在HCFO-1233XF氢化HCFC-244BB中减缓HFC-245CB形成的方法
    • WO2014164611A1
    • 2014-10-09
    • PCT/US2014/023000
    • 2014-03-11
    • HONEYWELL INTERNATIONAL INC.
    • WANG, HaiyouMERKEL, Daniel C.TUNG, Hsueh SungKOPKALLI, Haluk
    • C07C17/25C07C17/42C07C19/08
    • C07C17/23C07C17/087C07C17/206C07C17/25C07C19/10C07C21/18
    • The present process relates to a method for minimizing the formation of 1,1,1,2,2-pentafluoropropane in a liquid phase reaction of 2-chloro-3,3,3-trifluoropropene and HF in the presence of a hydrofluorination catalyst comprising: (a) reacting HF with sufficient amount of 2-chloro-3,3,3-trifluoropropene in the presence of a hydrofluorination catalyst under conditions effective to form 2-chloro-1,1,1,2-tetrafluoropropane, the hydrofluorination catalyst being present in sufficient amounts to catalyze said reaction and the 2-chloro-1,1,1,2-tetrafluoropropane being formed with both a conversion of greater than 80% and a 1,1,1,2,2-pentafluoropropane selectivity lower than 20%; and (b) maintaining the 2-chloro-1, 1, 1, 2-tetrafluoropropane being formed with both a conversion of about 80% or more and a 1,1,1,2,2-pentafluoropropane selectivity of about 20% or less by adding said hydrofluorination catalyst to the reactor in small increments.
    • 本方法涉及在含氟氢化催化剂存在下,在2-氯-3,3,3-三氟丙烯和HF的液相反应中使1,1,1,2,2-五氟丙烷的形成最小化的方法,包括 :(a)在氢氟化催化剂存在下,在有效形成2-氯-1,1,1,2-四氟丙烷的条件下,使HF与足够量的2-氯-3,3,3-三氟丙烯反应,氢氟化催化剂 以足够的量存在以催化所述反应,形成的2-氯-1,1,1,2-四氟丙烷的转化率大于80%,1,1,1,2,2-五氟丙烷选择性降低 超过20%; 和(b)保持2-氯-1,1,1,2-四氟丙烷的转化率为约80%以上,1,1,1,2,2-五氟丙烷选择性为约20%,或 较少的是通过以小的增量将所述氢氟化催化剂加入到反应器中。