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公开(公告)号：US20220219146A1
公开(公告)日：2022-07-14
申请号：US17609771
申请日：2020-06-01
IPC分类号： B01J23/755 , B01J21/08 , B01J21/18 , B01J27/138 , B01J27/125 , B01J23/28 , B01J23/883 , B01J23/30 , B01J35/10 , C07C17/25
摘要： Disclosed is a catalyst for preparing 2,3,3,3-tetrafluoropropene by gas-phase hydrodechlorination, which solves the problem of the high costs and easy deactivation of traditional chlorofluorocarbon hydrodechlorination catalysts. The disclosed catalyst is characterized in consisting of an active component and a carrier, wherein the active component is a combination of one or more of the metals: Ni, Mo, W, Co, Cr, Cu, Ce, La, Mn and Fe. The catalyst in the present invention has excellent performance, high activity, good stability and a low reaction temperature, effectively reduces reaction energy consumption, and has industrial application value.
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公开(公告)号：US11833489B2
公开(公告)日：2023-12-05
申请号：US17609771
申请日：2020-06-01
IPC分类号： B01J23/755 , B01J21/08 , B01J21/18 , B01J23/28 , B01J23/30 , B01J23/883 , B01J27/125 , B01J27/138 , B01J35/10 , C07C17/25
CPC分类号： B01J23/755 , B01J21/08 , B01J21/18 , B01J23/28 , B01J23/30 , B01J23/883 , B01J27/125 , B01J27/138 , B01J35/1014 , B01J35/1019 , B01J35/1023 , B01J35/1028 , C07C17/25
摘要： Disclosed is a catalyst for preparing 2,3,3,3-tetrafluoropropene by gas-phase hydrodechlorination, which solves the problem of the high costs and easy deactivation of traditional chlorofluorocarbon hydrodechlorination catalysts. The disclosed catalyst is characterized in consisting of an active component and a carrier, wherein the active component is a combination of one or more of the metals: Ni, Mo, W, Co, Cr, Cu, Ce, La, Mn and Fe. The catalyst in the present invention has excellent performance, high activity, good stability and a low reaction temperature, effectively reduces reaction energy consumption, and has industrial application value.
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公开(公告)号：US10087125B2
公开(公告)日：2018-10-02
申请号：US15806138
申请日：2017-11-07
发明人： Jian Lu , Bo Wang , Yue Qin , Wei Mao , Liangang Kou , Zhenhua Zhang , Fei He , Wei Zhang , Hui Ma , Yangbo Ma , Zhijun Hao , Chunying Li , Yongmei Du , Fengxian Li , Sheng Han
摘要： Disclosed in the present invention are a chromium-free gas phase fluorination catalyst and an application thereof. The precursor of the related chromium-free gas phase fluorination catalyst consists of a compound containing iron element, a compound containing rare earth metal element and a compound containing element A, wherein element A is one selected from Ca, Al, Mg and Ti, the precursor is subjected to roasting and fluorination treating to obtain the chromium-free gas phase fluorination catalyst. The precursor of the catalyst is roasted at 400-500° C. and fluoridized with hydrogen fluoride at 350-450° C. to obtain the chromium-free gas phase fluorination catalyst. The catalyst has characteristics of being chromium-free and environment-friendly, good catalytic activity and long life etc. The catalyst can be used for preparing hydrofluoroolefins or hydrochlorofluoroolefins from halohydrocarbons.
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4.发明授权公开(公告)号：US09873649B2
公开(公告)日：2018-01-23
申请号：US15535260
申请日：2015-02-05
发明人： Jian Lv , Hui Ma , Bo Wang , Wei Zhang , Zhiqiang Yang , Yujie Gu , Wei Mao , Jijun Zeng , Xiaobo Tang , Zhenhua Zhang
IPC分类号： C07C17/20 , C07C17/21 , C07C17/23 , C07C17/383 , B01J37/26 , B01J37/08 , B01J23/745 , B01J37/03
CPC分类号： C07C17/206 , B01J23/745 , B01J37/035 , B01J37/08 , B01J37/26 , C07C17/21 , C07C17/23 , C07C17/383 , C07C21/18 , C07C19/10 , C07C21/22
摘要： 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 are 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.
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公开(公告)号：US09845274B2
公开(公告)日：2017-12-19
申请号：US15103803
申请日：2014-08-05
发明人： Jian Lu , Bo Wang , Yue Qin , Wei Mao , Liangang Kou , Zhenhua Zhang , Fei He , Wei Zhang , Hui Ma , Yangbo Ma , Zhijun Hao , Chunying Li , Yongmei Du , Fengxian Li , Sheng Han
CPC分类号： C07C17/206 , B01J23/83 , B01J27/128 , B01J37/26 , C07C17/25 , C07C21/18
摘要： Disclosed in the present invention is a chromium-free catalyst for gas-phase fluorination and an application thereof. The precursor of the related chromium-free catalyst for gas-phase fluorination consists of a compound containing iron element, a compound containing rare earth metal element and a compound containing element A, wherein element A is one selected from Ca, Al, Mg and Ti, the precursor is subjected to calcination and fluorination treatment to obtain the chromium-free catalyst for gas-phase fluorination. The precursor of the catalyst is calcined at 400-500° C. and fluorinated with hydrogen fluoride at 350-450° C. to obtain the chromium-free fluorinated catalyst. The catalyst has characteristics of being chromium-free and environment-friendly, good catalytic activity and long life etc. The catalyst can be used for preparing hydrofluoroolefins or hydrochlorofluoroolefins from halohydrocarbons.
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