Process for the preparation of 1,3,3,3-tetrafluoropropene

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United States of America Patent

PATENT NO 9878969
SERIAL NO

15535220

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Abstract

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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.

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Patent OwnerAddress
XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE710065 NO EIGHT NO 168 EAST ROAD YANTA DISTRICT SHAANXI XI'AN XI'AN CITY SHAANXI PROVINCE 710065

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bai, Yanbo Shaanxi, CN 2 0
Gu, Yujie Shaanxi, CN 6 1
Hao, Zhijun Shaanxi, CN 4 2
Li, Chunying Shaanxi, CN 9 12
Li, Fengxian Shaanxi, CN 4 2
Lv, Jian Shaanxi, CN 20 7
Lv, Jing Shaanxi, CN 161 1121
Ma, Hui Shaanxi, CN 76 307
Qin, Yue Shaanxi, CN 20 490
Wang, Bo Shaanxi, CN 734 4273
Zhang, Zhenhua Shaanxi, CN 217 919

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