The present invention provides an economically advantageous method for efficiently producing a fluorine-containing compound while ensuring high conversion of the starting compound, reducing production of 245cb, and reducing equipment costs and energy costs. Specifically, the present invention provides a method for producing a fluorine-containing compound represented by Formula (3): CF
3
CFY
n
CH
2
Z
n
(wherein n is 0 or 1, one of Y and Z is H, and the other is F or Cl) by successively reacting at least one chlorine-containing compound selected from the group consisting of chlorine-containing fluoroalkane represented by Formula (1): CX
3
CHClCH
2
Cl (wherein X is independently F or Cl, with the proviso that at least one X is F) and chlorine-containing fluoroolefin represented by Formula (2): CX
3
CCl═CH
2
(wherein X is independently F or Cl, with the proviso that at least one X is F) with anhydrous hydrogen fluoride in the presence of a fluorination catalyst, wherein the concentration of hydrogen chloride in a reactor inlet gas is not less than 0.01 vol % and not more than 10 vol %.
本发明提供了一种经济优势的方法,可以在确保起始化合物高转化率的同时,高效地生产含
氟化合物,减少产生245cb,降低设备成本和能源成本。具体而言,本发明提供了一种通过在
氟化催化剂存在下,依次反应选择自
氯代氟烷类化合物和
氯代
氟烯类化合物中至少一种的方法,所述
氯代氟烷类化合物由式(1)表示:CX3CHCl Cl(其中X独立地为F或Cl,但至少一个X为F),和
氯代
氟烯类化合物由式(2)表示:CX3CCl═
CH2(其中X独立地为F或Cl,但至少一个X为F),来生产由式(3)表示的含
氟化合物:CF3CFYn Zn(其中n为0或1,Y和Z中的一个为H,另一个为F或Cl),其中反应器入口气体中
氯化氢的浓度不低于0.01体积%且不高于10体积%。