公开(公告)号：US20170342003A1

公开(公告)日：2017-11-30

申请号：US15535220

申请日：2015-02-05

Applicant: XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE

Inventor： Jian LV ,  Hui MA ,  Yujie GU ,  Bo WANG ,  Yue QIN ,  Zhenhua ZHANG ,  Zhijun HAO ,  Chunying LI ,  Fengxian LI ,  Jing LV ,  Yanbo BAI

IPC: C07C17/20 ,  C07C21/18 ,  C07C17/358 ,  B01J23/00

CPC classification number: C07C17/20 ,  B01D2255/2045 ,  B01D2255/2047 ,  B01D2255/20715 ,  B01D2255/20723 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01J23/00 ,  B01J23/002 ,  B01J23/78 ,  B01J23/80 ,  B01J23/83 ,  B01J23/8472 ,  B01J23/8892 ,  B01J37/03 ,  B01J37/04 ,  B01J37/08 ,  B01J37/26 ,  B01J2523/00 ,  C07C17/206 ,  C07C17/23 ,  C07C17/25 ,  C07C17/35 ,  C07C17/358 ,  C07C21/18 ,  C07C19/10 ,  B01J2523/27 ,  B01J2523/31 ,  B01J2523/845 ,  B01J2523/22 ,  B01J2523/23 ,  B01J2523/48 ,  B01J2523/847 ,  B01J2523/3706 ,  B01J2523/72 ,  B01J2523/842 ,  B01J2523/36 ,  B01J2523/25 ,  B01J2523/17 ,  B01J2523/55

Abstract: Disclosed is a process for the preparation of 1,3,3,3-tetrafluoropropene, comprising: (a) a compound having the formula CF3-xClxCHClCHF2-yCly and in the presence of a compound catalyst, undergoes, through n serially-connected reactors, gas-phase fluorination with hydrogen fluoride, producing 1,2,3-trichloro-1,1,3-trifluoropropane, and 1,2-dichloro-1,1,3,3-tetrafluoropropane; in said formula, x=1, 2 or 3; y=1 or 2, and 3≦x+y≦5; (b) 1,2,3-trichloro-1,1,3-trifluoropropane, and 1,2-dichloro-1,1,3,3-tetrafluoropropane undergo, in the presence of a dehalogenation catalyst, gas-phase dehalogenation with hydrogen, producing 3-chloro-1,3,3-trifluoropropene, and 1,1,3,3-tetrafluoropropene; (c) 3-chloro-1,3,3-trifluoropropene and 1,1,3,3-tetrafluoropropene undergo, in the presence of a fluorination catalyst, gas-phase fluorination with hydrogen fluoride, producing 1,3,3,3-tetrafluoropropene. The present invention is primarily used to produce 1,3,3,3-tetrafluoropropene.

公开(公告)号：US20170320797A1

公开(公告)日：2017-11-09

申请号：US15535260

申请日：2015-02-05

Applicant: XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE

Inventor： Jian LV ,  Hui MA ,  Bo WANG ,  Wei ZHANG ,  Zhiqiang YANG ,  Yujie GU ,  Wei MAO ,  Jijun ZENG ,  Xiaobo TANG ,  Zhenhua ZHANG

IPC: C07C17/20 ,  C07C17/23 ,  B01J37/26 ,  B01J23/745 ,  B01J37/08 ,  B01J37/03 ,  C07C17/383 ,  C07C17/21

CPC classification number: C07C17/206 ,  B01J23/745 ,  B01J37/035 ,  B01J37/08 ,  B01J37/26 ,  C07C17/21 ,  C07C17/23 ,  C07C17/383 ,  C07C21/18 ,  C07C19/10 ,  C07C21/22

Abstract: A process for the joint preparation of 1,3,3,3-tetrafluoropropene and 2,3,3,3-tetrafluoropropene, comprising: (a) starting materials comprising at least one compound having the structure of formula I, II or III is reacted with hydrogen fluoride, producing 1,2,3-trichloro-3,3-difluoropropene, 1,2,3-trichloro-1,1,2-trifluoropropane, and 1,2,3-trichloro-1,1,3-trifluoropropane; in the compounds of said formulae CF2−mClm=CCl-CHF2−nCln (Formula I), CF3−pClpCHCl=CH2Cl (Formula II), and CF3−xClxCF2−yClyCHF2−zClz (Formula III), m=0, 1, 2; n=1, 2; p=2, 3; x=1, 2, 3; y=1, 2; z=1, 2 and 4≦x+y+z≦6; (b) the 1,2,3-trichloro-3,3-difluoropropene, 1,2,3-trichloro-1,1,2-trifluoropropane and 1,2,3-trichloro-1,1,3-trifluoropropane undergo dechlorination, producing 3-chloro-3,3-difluoropropyne, 3-chloro-2,3,3-trifluoropropene and 3-chloro-1,3,3-trifluoropropene; and (c) the 3-chloro-3,3-difluoropropyne, 3-chloro-2,3,3-trifluoropropene and 3-chloro-1,3,3-trifluoropropene are reacted with hydrogen fluoride, simultaneously yielding 1,3,3,3-tetrafluoropropene and 2,3,3,3-tetrafluoropropen.FIG. 1 is designated as the drawing of the Abstract.