1645-83-6Relevant academic research and scientific papers
METHOD FOR PRODUCING 1-CHLORO-3,3,3-TRIFLUOROPROPENE
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Paragraph 0050; 0052-0053; 0060; 0066, (2020/02/10)
A method for manufacturing 1-chloro-3,3,3-trifluoropropene (1230zd) is provided. The method includes contacting a halogenated hydrocarbon compound having a carbon number of 3 and represented by a general formula (1) with a metal catalyst in a gas phase. [in-line-formulae]CFaCl3-a—CH2—CHFbCl2-b ??(1)[/in-line-formulae] In the formula, a is an integer from 0 to 2, b is 1 or 2 when a=0, b is 0 or 1 when a=1, and b is 0 when a=2.
COMPOSITIONS OF CHROMIUM OXYFLUORIDE OR FLUORIDE CATALYSTS, THEIR PREPARATION AND THEIR USE IN GAS-PHASE PROCESSES
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Paragraph 0168, (2019/06/14)
The present invention relates to a process for modifying the fluorine distribution in a hydrocarbon compound in the presence of a catalyst, characterized by the use, as catalyst, of a solid composition comprising at least one component containing chromium oxyfluoride or fluoride of empirical formula CrxM(1-x)OrFs, where 2r+s is greater than or equal to 2.9 and less than 6, M is a metal chosen from columns 2 to 12 of the Periodic Table of the Elements, x has a value from 0.9 to 1, s is greater than 0 and less than or equal to 6 and r is greater than or equal to 0 and less than 3, the said solid composition having a crystallinity of less than 20% by weight. The present invention also relates to the solid composition per se.
Dry etching gas and dry etching method
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Page/Page column 8-9, (2019/11/11)
What is disclosed is a dry etching gas containing 1,3,3,3-tetrafluoropropene, wherein 1,3,3,3-tetrafluoropropene has purity of 99.5 mass % or more, and a total of concentration of each mixed metal component of Fe, Ni, Cr, Al, and Mo is 500 mass ppb or less. Furthermore, regarding to the dry etching gas, it is preferable that a content of nitrogen is 0.5 volume % or less, and that a content of water is 0.05 mass % or less. In a dry etching with a plasma gas obtained by making a dry etching gas into plasma, the dry etching gas of the present invention can improve etching selectivity of silicon-based material with respect to a mask.
METHOD FOR PRODUCING 1,3,3,3-TETRAFLUOROPROPENE (HFO-1234ze) FROM 1-CHLORO-3,3,3-TRIFLUOROPOPENE (HCFO-1233zd)
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Paragraph 0041-0042, (2019/06/07)
A method for producing 1,3,3,3-tetrafluoropropene (HFO-1234ze, or 1234ze) from 1-chloro-3,3,3-trifluoropopene (HCFO-1233zd, or 1233zd). In one embodiment, HFO-1233zd is subjected to a disproportionation reaction in the presence of a catalyst at an elevated temperature to produce HFO-1234ze as well as 3,3-dichloro-1,1-difluoropropene (HCFO-1232zc). The catalyst may be at least one of a chromium oxyfluoride catalyst, a chromium oxide catalyst, or a metal fluoride catalyst. The reaction may be conducted in the vapor phase at a temperature between 100° C. and 450° C. Advantageously, in the present method, substantially no hydrogen fluoride (HF) is used as a reactant, and substantially no HF is produced as a product.
Cogeneration process for preparing 1, 3, 3, 3 - tetrafluoropropene and/or 2, 3, 3, 3 - tetrafluoropropene process
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Paragraph 0039; 0040, (2017/08/25)
The present invention discloses a new process for co-producing 1,3,3,3-tetrafluoropropene and/or 2,3,3,3-tetrafluoropropene, wherein only a raw material 2-chloro-3,3,3-trifluoropropene is used to concurrently obtain two low-GFP alternative commercial products such as HFO-1234ze and HFO-1234yf.
METHOD FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE AND 1,3,3,3-TETRAFLUOROPROPENE
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Page/Page column 0050-0052, (2017/11/29)
A method for preparing 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene, including: providing a first reactor including a first section, a second section, and a third section, with each section being filled with different catalysts, preheating hexafluoropropylene and hydrogen, and introducing the hexafluoropropylene and the hydrogen to the first reactor to yield a first mixture including: 1,1,1,2,3-pentafluoropropane, 1,1,1,2,3,3-hexafluoropropane, and hydrogen fluoride; introducing the first mixture to a first distillation column to yield 1,1,1,2,3,3-hexafluoropropane at a top of the first distillation column and 1,1,1,2,3-pentafluoropropane and hydrogen fluoride at a bottom of the first distillation column, recycling the 1,1,1,2,3,3-hexafluoropropane to a lower part of the first section of the first reactor, and introducing the 1,1,1,2,3-pentafluoropropane and the hydrogen fluoride to a second reactor to yield a second mixture including: 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, hydrogen fluoride, and 1,1,1,2,3-pentafluoropropane; and performing water washing, alkaline washing, drying, and distillation on the second mixture to yield 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene.
PROCESS FOR PRODUCING FLUORINE-CONTAINING OLEFIN
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Paragraph 0090-0092; 0097, (2016/12/22)
In the production of fluorine-containing olefins using a chlorine-containing alkane or a chlorine-containing alkene as a starting material, a process for producing a plurality of useful fluorine-containing olefins with high selectivity using the same raw material, the same equipment, and the same conditions is provided. The present invention provides a process for producing fluorine-containing olefins, the process comprising reacting a chlorine-containing compound represented by a specific formula and anhydrous hydrogen fluoride in the presence of oxidative gas and a fluorination catalyst, wherein the fluorination catalyst is a catalyst in which at least one metal element M selected from the group consisting of Group VIII and Group IX is present together with chromium. This production process can simultaneously produce two or more fluorine-containing olefin compounds, including HFO-1234yf and HFO-1234ze, with high selectivity.
PROCESS FOR THE PREPARATION OF TETRAFLUOROPROPENE
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Page/Page column 9, (2016/09/15)
A process for producing at least one tetrafluoropropene, the process comprising (i) converting Z-1233zd to TFMA in the presence of at least one base, wherein the process is conducted in the presence of water, and (ii) contacting the TFMA produced in step (i) with hydrogen fluoride (HF) in the presence of a Lewis acid metal halide catalyst to produce reaction product comprising at least one tetrafluoropropene.
A method of manufacturing a fluorine-containing phenylpropene
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Paragraph 0065-0067, (2020/06/20)
PROBLEM TO BE SOLVED: To provide a method for easily and efficiently producing a fluorine-containing propene represented by the general formula: CF3CH=CHZ (wherein, Z is Cl or F), compatible also with industrial-scale production. SOLUTION: The method for producing the fluorine-containing propene represented by general formula (4): CF3CH=CHZ (wherein, Z is Cl or F) is characterized by comprising conducting a reaction, in a vapor-phase state under heating, in the absence of any catalyst, between hydrogen fluoride and at least one chlorine-containing compound selected from the group consisting of chlorine-containing propane represented by general formula (1): CClX2CH2CHClY (wherein, the X groups are the same as or different from each other, and are each Cl or F; and Y is Cl or F); chlorine-containing propene represented by general formula (2): CClX2CH=CHY (wherein, X groups are the same as or different from each other, and are each Cl or F; and Y is Cl or F); and chlorine-containing propene represented by general formula (3): CX2=CHCHClY (wherein, X groups are the same as or different from each other, and are each Cl or F; and Y is Cl or F). COPYRIGHT: (C)2012,JPO&INPIT
1, 3, 3, 3-TETRAFLUOROPROPENE PREPARATION PROCESS
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Paragraph 0030; 0031; 0032; 0033; 0035; 0036; 0037; 0038, (2015/11/11)
Disclosed is an HFO-1234ze preparation process. The present invention is realized by loading two fluorination catalysts into the same reactor, and controlling the temperature in each section. The preparation process of the present invention is of moderate reaction condition, stable catalyst activity, and simple process.
