JPH0358946A - Production of 1,1-dichloro-1,2,2,2-tetrafluoroethane - Google Patents
Production of 1,1-dichloro-1,2,2,2-tetrafluoroethaneInfo
- Publication number
- JPH0358946A JPH0358946A JP1191546A JP19154689A JPH0358946A JP H0358946 A JPH0358946 A JP H0358946A JP 1191546 A JP1191546 A JP 1191546A JP 19154689 A JP19154689 A JP 19154689A JP H0358946 A JPH0358946 A JP H0358946A
- Authority
- JP
- Japan
- Prior art keywords
- reaction
- trifluoroethane
- dichloro
- tetrafluoroethane
- chlorine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- BAMUEXIPKSRTBS-UHFFFAOYSA-N 1,1-dichloro-1,2,2,2-tetrafluoroethane Chemical compound FC(F)(F)C(F)(Cl)Cl BAMUEXIPKSRTBS-UHFFFAOYSA-N 0.000 title claims description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000460 chlorine Substances 0.000 claims abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 10
- UJPMYEOUBPIPHQ-UHFFFAOYSA-N 1,1,1-trifluoroethane Chemical compound CC(F)(F)F UJPMYEOUBPIPHQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007791 liquid phase Substances 0.000 claims abstract description 8
- 239000012071 phase Substances 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 150000004820 halides Chemical class 0.000 claims abstract description 4
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 claims abstract 3
- 238000003682 fluorination reaction Methods 0.000 claims description 16
- 238000005660 chlorination reaction Methods 0.000 claims description 8
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- 239000012808 vapor phase Substances 0.000 abstract 4
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 229910019804 NbCl5 Inorganic materials 0.000 abstract 1
- 229910004546 TaF5 Inorganic materials 0.000 abstract 1
- VMPVEPPRYRXYNP-UHFFFAOYSA-I antimony(5+);pentachloride Chemical compound Cl[Sb](Cl)(Cl)(Cl)Cl VMPVEPPRYRXYNP-UHFFFAOYSA-I 0.000 abstract 1
- YHBDIEWMOMLKOO-UHFFFAOYSA-I pentachloroniobium Chemical compound Cl[Nb](Cl)(Cl)(Cl)Cl YHBDIEWMOMLKOO-UHFFFAOYSA-I 0.000 abstract 1
- YRGLXIVYESZPLQ-UHFFFAOYSA-I tantalum pentafluoride Chemical compound F[Ta](F)(F)(F)F YRGLXIVYESZPLQ-UHFFFAOYSA-I 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 2
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- FRCHKSNAZZFGCA-UHFFFAOYSA-N 1,1-dichloro-1-fluoroethane Chemical compound CC(F)(Cl)Cl FRCHKSNAZZFGCA-UHFFFAOYSA-N 0.000 description 1
- DDMOUSALMHHKOS-UHFFFAOYSA-N 1,2-dichloro-1,1,2,2-tetrafluoroethane Chemical compound FC(F)(Cl)C(F)(F)Cl DDMOUSALMHHKOS-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical class CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
- RXPRRQLKFXBCSJ-GIVPXCGWSA-N vincamine Chemical compound C1=CC=C2C(CCN3CCC4)=C5[C@@H]3[C@]4(CC)C[C@](O)(C(=O)OC)N5C2=C1 RXPRRQLKFXBCSJ-GIVPXCGWSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、１．１−ジクロロ−１，２，２，２−テトラ
フルオロエタンの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing 1,1-dichloro-1,2,2,2-tetrafluoroethane.
［従来の技術及び発明が解決しようとする課題］１．１
−ジクロロ−１，２，２，２−テトラフルオロエタン（
Ｒ−１１４ａ）の製造方法としては、１，１．２−トリ
クロロ−１，２，２−トリフルオロエタン（Ｒ−１１３
）等のハロエタンをフッ素化する方法がある。この場合
、反応生成物は、１．１−ジクロロ−１，２，２゜２−
テトラフルオロエタン（Ｒ−１１４ａ）と１．２−ジク
ロロ−１，１，２，２−テトラフルオロエタン（Ｒ−１
１４）の混合物となる。更にこの両者の沸点はそれぞれ
３．０℃、３．８℃であって、生成物の分離には困難を
伴う。そのため現在、１．１−ジクロロ−１，２゜２．
２−テトラフルオロエタン（Ｒ−ＩＬ４ａ）の高純度品
を安価に入手することは困難である。[Prior art and problems to be solved by the invention] 1.1
-dichloro-1,2,2,2-tetrafluoroethane (
As a method for producing R-114a), 1,1,2-trichloro-1,2,2-trifluoroethane (R-113
There is a method of fluorinating haloethane such as ). In this case, the reaction product is 1,1-dichloro-1,2,2°2-
Tetrafluoroethane (R-114a) and 1,2-dichloro-1,1,2,2-tetrafluoroethane (R-1
14) becomes a mixture. Furthermore, the boiling points of both are 3.0°C and 3.8°C, respectively, making it difficult to separate the products. Therefore, currently 1,1-dichloro-1,2゜2.
It is difficult to obtain a highly purified product of 2-tetrafluoroethane (R-IL4a) at a low cost.
［課題を解決するための手段］
本発明は、高純度の１．１−ジクロロ−１，２，２，２
−テトラフルオロエタン（Ｒ−１１４ａ）の製造方法を
新規に提供することを目的とするものである。[Means for Solving the Problems] The present invention provides highly purified 1,1-dichloro-1,2,2,2
The object of the present invention is to provide a new method for producing -tetrafluoroethane (R-114a).
すなわち、本発明は１． ｌ、 １−１−リフロロエタ
ン（Ｒ−１４３ａ）と塩素との塩素化により得られる１
、 １．１− トリクロロ−２，２，２−トリフルオロ
エタン（Ｒ−１１３ａ）をフッ酸でフッ素化反応せしめ
ることにより１．１−ジクロロ−１，２，２，２−テト
ラフルオロエタンを得ることを特徴とする１、１−ジク
ロロ−１，２，２，２−テトラフルオロエタン（Ｒ−１
１４ａ）の製造方法を提供するものである。That is, the present invention has 1. l, 1 obtained by chlorination of 1-1-lifluoroethane (R-143a) and chlorine
, Obtain 1.1-dichloro-1,2,2,2-tetrafluoroethane by subjecting 1.1-trichloro-2,2,2-trifluoroethane (R-113a) to a fluorination reaction with hydrofluoric acid. 1,1-dichloro-1,2,2,2-tetrafluoroethane (R-1
14a).
１．１．１−）リフロロエタン（Ｒ−１４３ａ）は種々
の方法により生成又は副生されるが、例えば１．１゜１
−トリクロロエタンをフッ酸を用いてフッ素化反応せし
めて、１．１−ジクロロ−１−フロロエタン（Ｒ−１４
１ｂ）や１−クロロ−１，１−ジクロロエタン（Ｒ−１
４２ｂ ）を経由する反応ルートでも得ることができ、
又、トリクロルエチレンをフッ酸とのフッ素化反応によ
る１−り四ロー２．２．２− トリフルオロエタン（Ｒ
−１３３ａ）を水素還元反応せしめても得られる。1.1.1-) Refluoroethane (R-143a) is produced or by-produced by various methods, for example 1.1゜1
- Trichloroethane is subjected to a fluorination reaction using hydrofluoric acid, and 1,1-dichloro-1-fluoroethane (R-14
1b) and 1-chloro-1,1-dichloroethane (R-1
42b) can also be obtained by a reaction route via
In addition, 1-tri-4-2-2-trifluoroethane (R
It can also be obtained by subjecting -133a) to a hydrogen reduction reaction.
本発明において、フッ素化触媒としては、Ａｌ、 Ｃｒ
、 Ｍｇ、 Ｃａ、 Ｓｒ、 Ｂａ、 Ｆｅ、 Ｎｉ
、 Ｃｏ、 Ｓｂ、 Ｎｂ及びＴａからなる群から選ば
れる少なくとも１個の元素を含むハロゲン化物または酸
化物が使用できる。気相フッ素化方法を採用するならば
、Ａｌ２Ｏ３゜Ｃｒ２Ｏ２，ＭｇＯ，ＣａＯなどの酸化
物及びこれらの複合酸化物を、液相フッ素化方法を採用
するならば、ＴａＦ５ 、ＮｂＣ１ｇ 、Ｓｂ（：Ｉｓ
等のハロゲン化物を使用することが好ましい。In the present invention, the fluorination catalyst includes Al, Cr
, Mg, Ca, Sr, Ba, Fe, Ni
A halide or oxide containing at least one element selected from the group consisting of , Co, Sb, Nb and Ta can be used. If a gas phase fluorination method is adopted, oxides such as Al2O3°Cr2O2, MgO, CaO, etc. and their composite oxides are
It is preferable to use halides such as.
上記の触媒は、反応に供せられる前にフッ化水素やＲ−
１１（トリクロロフルオロメタン）。The above catalyst can be used for hydrogen fluoride or R-
11 (trichlorofluoromethane).
Ｒ−１２（ジクロロジフルオロメタン）など、少なくと
もフッ素原子を１個含むハロゲン化メタン、ハロゲン化
エタン等により活性化しておくことが望ましい。It is desirable to activate with halogenated methane, halogenated ethane, etc. containing at least one fluorine atom, such as R-12 (dichlorodifluoromethane).
塩素化反応は気相中常圧もしくは加圧下で、また液相加
圧下で、５０℃〜５５０℃、特に ２００℃〜４５０℃
の温度範囲で行なうことが適当である。The chlorination reaction is carried out in the gas phase at normal pressure or under pressure, or in the liquid phase under pressure at 50°C to 550°C, especially 200°C to 450°C.
It is appropriate to carry out the test within a temperature range of .
接触時間は、通常０．１〜３００秒、特に５〜６０秒の
範囲が好ましい。塩素とＲ−１４３ａの割合は大幅に変
動させ得る。しかしながら、通常、化学量論量の塩素を
使用して水素原子を置換する。The contact time is generally preferably in the range of 0.1 to 300 seconds, particularly 5 to 60 seconds. The proportions of chlorine and R-143a can vary widely. However, stoichiometric amounts of chlorine are usually used to replace hydrogen atoms.
出発物質の全モル数に対して、化学量論量よりかなり多
い量、例えば１０倍モルまたはそれ以上の塩素を使用し
得る。Significantly more than stoichiometric amounts of chlorine may be used, for example 10 times the moles or more, relative to the total number of moles of starting materials.
フッ素化反応は気相中常圧もしくは加圧下で、また液相
加圧下で、５０℃〜５５０℃、特に好ましくは、５０℃
〜４５０℃の温度範囲で行なうことが適当である。フッ
化水素とＲ−１１３ａの割合は大幅に変動させ得る。し
かしながら、通常、化学量論量のフッ化水素を使用して
塩素原子を置換する。出発物質の全モル数に対して、
化学量論量よりかなり多い量、例久ば、４倍モルまたは
それ以上のフッ化水素を使用し得る。接触時間は、反応
を気相で行なう場合には、通常、０．１〜３００秒、特
に好ましくは、５〜３０秒であり、液相で行なう場合に
は、通常０．１分から１［１０００分、特に好ましくは
、１０分から１０００分程度０反応器内滞留時間が必要
である。The fluorination reaction is carried out in the gas phase at normal pressure or under pressure, or in the liquid phase under pressure at 50°C to 550°C, particularly preferably at 50°C.
Suitably, the temperature range is between 450°C and 450°C. The proportions of hydrogen fluoride and R-113a can vary widely. However, stoichiometric amounts of hydrogen fluoride are usually used to replace the chlorine atoms. Based on the total number of moles of starting materials,
Significantly greater than stoichiometric amounts of hydrogen fluoride may be used, for example, 4 times the mole or more. The contact time is usually 0.1 to 300 seconds, particularly preferably 5 to 30 seconds when the reaction is carried out in a gas phase, and is usually 0.1 minute to 1[1000 seconds when carried out in a liquid phase. The residence time in the reactor is preferably about 10 minutes to 1000 minutes.
触媒活性維持のため、酸素または塩素をＲ−１１３ａに
対して０．１〜１０ｖｏ１％共存させることが好ましい
。In order to maintain catalytic activity, it is preferable to coexist oxygen or chlorine in an amount of 0.1 to 10 vol% relative to R-113a.
反応形式は、液相、気相いずれでも構わないが、連続反
応器とするならば塩素化反応、フッ素化反応、ともに気
相反応に統一する事で装置は簡易なものとなる。本発明
の所望の生成物は慣用の方法、例えば、分別蒸留により
分離し得る。The reaction format may be either liquid phase or gas phase, but if a continuous reactor is used, the apparatus will be simplified by unifying the chlorination reaction and fluorination reaction into gas phase reactions. The desired products of the invention may be separated by conventional methods, such as fractional distillation.
以上の如く、本発明はＲ−１４３ａを塩素化後、フッ素
化することにより高純度の１．１−ジクロロ−１，２，
２，２−テトラフルオロエタン（Ｒ−１１４ａ）を製造
する方法を提供するものである。As described above, the present invention produces highly purified 1,1-dichloro-1,2,
A method for producing 2,2-tetrafluoroethane (R-114a) is provided.
［実施例］ 以下に本発明の実施例を示す。[Example] Examples of the present invention are shown below.
調製例
１１００ｇ （７）特級試薬Ａｌ（ＮＯ３）３−９Ｈ２
０、１２５ｇ （７）Ｃｒ（ＮＯ，）、・９Ｈ，Ｏと４
０ｇのＭｇ（ＮＯｓ）ｚ・６Ｈａｏを ２．５リツトル
の水に溶解し、これと２８％の水酸化アンモニウムの水
溶液２０００ｇを撹拌しながら加熱した４リツトルの水
に添加して水酸化物の沈殿を得た。これを濾別し、純水
による洗浄、および乾燥を行なった後、４５０℃で５時
間焼成して酸化物の粉末を得た。これを打錠成型機を用
いて直径５ｍｍ、高さ５ｍｍの円筒状に成型した。こう
して得た触媒を反応前にフッ化水素／窒素の混合ガス気
流中、２００〜４００℃でフッ素化して活性化した。Preparation example 1100g (7) Special grade reagent Al(NO3)3-9H2
0, 125g (7) Cr(NO,), 9H, O and 4
0 g of Mg(NOs)z・6Hao was dissolved in 2.5 liters of water, and 2000 g of a 28% ammonium hydroxide aqueous solution was added to 4 liters of water heated with stirring to precipitate the hydroxide. I got it. This was filtered, washed with pure water, and dried, and then calcined at 450° C. for 5 hours to obtain an oxide powder. This was molded into a cylindrical shape with a diameter of 5 mm and a height of 5 mm using a tablet molding machine. The catalyst thus obtained was activated by fluorination at 200 to 400° C. in a hydrogen fluoride/nitrogen mixed gas stream before the reaction.
実施例１
内径２．５４ｃｍ 、長さ１００ｃｍのニッケル製円筒
反応管を塩素化反応器およびフッ素化反応器とした。空
筒の反応管を前段の塩素化反応器とし、調製例で示した
ように調製したフッ素化触媒を２００ｍ１充填した反応
管を後段のフッ素化反応器として連続反応させた。前段
には、ガス化させた１、１．１−トリフルオロエタンを
７０ｍ１／ｍｉｎで、塩素を５２５ｍ１ ／ｍｉｎで供
給し、４００℃に保持した。後段にはさらにフッ化水素
をｌｏＯｍｌ ／ｍｉｎで供給し、３２０℃に保持した
。酸分を除去した後のガス組成をガスクロ及び” Ｆ−
ＮＭＲを用いて分析した。結果を第１表に示す。Example 1 A nickel cylindrical reaction tube with an inner diameter of 2.54 cm and a length of 100 cm was used as a chlorination reactor and a fluorination reactor. An empty reaction tube was used as the first-stage chlorination reactor, and a reaction tube filled with 200 ml of the fluorination catalyst prepared as shown in the preparation example was used as the second-stage fluorination reactor for continuous reaction. Gasified 1,1,1-trifluoroethane was supplied at a rate of 70 ml/min and chlorine was supplied at a rate of 525 ml/min to the former stage, and the temperature was maintained at 400°C. Hydrogen fluoride was further supplied to the latter stage at a rate of lOml/min, and the temperature was maintained at 320°C. The gas composition after removing the acid content was analyzed using gas chromatography and "F-
Analyzed using NMR. The results are shown in Table 1.
第１表
実施例２
塩素化反応温度を４００℃、フッ素化反応温度を３５０
℃とする他は実施例１と同様の条件で反応を行なった。Table 1 Example 2 Chlorination reaction temperature: 400°C, fluorination reaction temperature: 350°C
The reaction was carried out under the same conditions as in Example 1 except that the temperature was changed to .degree.
酸分を除去した後のガス組成を分析した。結果を第２表
に示す。The gas composition was analyzed after acid content was removed. The results are shown in Table 2.
第２表
比較例１
内径２．５４ｃｍ 、長さ１００ｃｍのインコネル６０
０製Ｕ字型反応管をフッ素化反応器とした。調製例で示
したように調製した触媒を２００ｍ１充填した反応管を
フッ素化反応器とした。ガス化させた１、１．２−トリ
クロロ−１，２，２−トリフルオロエタンを１００ｍ１
／ ｍｉｎで、塩素を２ｍｌ／ｍｉｎで、フッ化水素
を１００ｍ１ ／ｍｉｎで供給し、３２０ ’Ｃに保持
した。酸分を除去した後のガス組成を分析した。結果を
第３表に示す。Table 2 Comparative Example 1 Inconel 60 with inner diameter of 2.54 cm and length of 100 cm
A U-shaped reaction tube manufactured by 0 was used as a fluorination reactor. A reaction tube filled with 200 ml of the catalyst prepared as shown in the preparation example was used as a fluorination reactor. 100ml of gasified 1,1,2-trichloro-1,2,2-trifluoroethane
/min, chlorine was supplied at 2 ml/min, hydrogen fluoride was supplied at 100 ml/min, and the temperature was maintained at 320'C. The gas composition was analyzed after acid content was removed. The results are shown in Table 3.
第３表
［発明の効果］
本発明は、実施例に示した如く、従来高純度品の入手が
困難であった１、１−ジクロロ−１，２，２゜２−テト
ラフルオロエタン（Ｒ−１１４ａ）を、Ｒ−１４３ａを
出発原料として高収率で製造し得るという効果を有する
。Table 3 [Effects of the Invention] As shown in the Examples, the present invention can be applied to 1,1-dichloro-1,2,2°2-tetrafluoroethane (R- 114a) can be produced in high yield using R-143a as a starting material.
Claims (4)
化反応により１，１，１−トリクロロ−２，２，２−ト
リフルオロエタンを生成せしめた後、これと フッ酸とのフッ素化反応により１，１−ジクロロ−１，
２，２，２−テトラフルオロエタンを得ることを特徴と
する１，１−ジクロロ−１，２，２，２−テトラフルオ
ロエタンの製造方法。(1) After producing 1,1,1-trichloro-2,2,2-trifluoroethane through a chlorination reaction between 1,1,1-trifluoroethane and chlorine, the fluorine reaction between this and hydrofluoric acid 1,1-dichloro-1,
A method for producing 1,1-dichloro-1,2,2,2-tetrafluoroethane, which comprises obtaining 2,2,2-tetrafluoroethane.
℃〜５５０℃の温度範囲で行なう請求項１に記載の製造
方法。(2) Perform the chlorination reaction in the gas phase at normal pressure or under pressure for 50
The manufacturing method according to claim 1, which is carried out at a temperature range of 550°C to 550°C.
Ｂａ、Ｆｅ、Ｎｉ、Ｃｏ、Ｓｂ、Ｎｂ及びＴａからなる
群から選ばれる少なくとも１個の元素を含むハロゲン化
物または酸化物からなるフッ素化触媒の存在下に行なう
請求項１に記載の製造方法。(3) Fluorination reaction with Al, Cr, Mg, Ca, Sr,
2. The manufacturing method according to claim 1, which is carried out in the presence of a fluorination catalyst consisting of a halide or oxide containing at least one element selected from the group consisting of Ba, Fe, Ni, Co, Sb, Nb and Ta.
たは液相加圧下で５０℃〜５５０℃の温度範囲で行なう
請求項１に記載の製造方法。(4) The production method according to claim 1, wherein the fluorination reaction is carried out in a gas phase under normal pressure or pressure, or in a liquid phase under pressure in a temperature range of 50°C to 550°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1191546A JP2737276B2 (en) | 1989-07-26 | 1989-07-26 | Method for producing 1,1-dichloro-1,2,2,2-tetrafluoroethane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1191546A JP2737276B2 (en) | 1989-07-26 | 1989-07-26 | Method for producing 1,1-dichloro-1,2,2,2-tetrafluoroethane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0358946A true JPH0358946A (en) | 1991-03-14 |
| JP2737276B2 JP2737276B2 (en) | 1998-04-08 |
Family
ID=16276475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1191546A Expired - Fee Related JP2737276B2 (en) | 1989-07-26 | 1989-07-26 | Method for producing 1,1-dichloro-1,2,2,2-tetrafluoroethane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2737276B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5120883A (en) * | 1991-08-26 | 1992-06-09 | E. I. Du Pont De Nemours And Company | Catalytic process for producing CCl3 CF3 |
| US5302765A (en) * | 1992-05-29 | 1994-04-12 | E. I. Du Pont De Nemours And Company | Catalytic process for producing CF3 CHClF |
| WO1995013996A1 (en) * | 1993-11-15 | 1995-05-26 | E.I. Du Pont De Nemours And Company | Hf-resistant ceramics and use thereof |
| US5602288A (en) * | 1992-05-29 | 1997-02-11 | E. I. Du Pont De Nemours And Company | Catalytic process for producing CF3 CH2 F |
| JP2002504528A (en) * | 1998-02-26 | 2002-02-12 | ソルヴェイ | Method for hydrofluorination of chlorohydrocarbons |
| JP2006512392A (en) * | 2002-12-30 | 2006-04-13 | ピーシービーユー サービス，インク． | Materials and methods for the conversion of hydrofluorocarbons |
| US9771309B2 (en) | 2005-04-08 | 2017-09-26 | Mexichem Amanco Holding S.A. De C.V. | Chromia based fluorination catalyst |
-
1989
- 1989-07-26 JP JP1191546A patent/JP2737276B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5120883A (en) * | 1991-08-26 | 1992-06-09 | E. I. Du Pont De Nemours And Company | Catalytic process for producing CCl3 CF3 |
| US5302765A (en) * | 1992-05-29 | 1994-04-12 | E. I. Du Pont De Nemours And Company | Catalytic process for producing CF3 CHClF |
| US5602288A (en) * | 1992-05-29 | 1997-02-11 | E. I. Du Pont De Nemours And Company | Catalytic process for producing CF3 CH2 F |
| WO1995013996A1 (en) * | 1993-11-15 | 1995-05-26 | E.I. Du Pont De Nemours And Company | Hf-resistant ceramics and use thereof |
| EP0729444A1 (en) * | 1993-11-15 | 1996-09-04 | E.I. Du Pont De Nemours And Company | Process using hf-resistant ceramics |
| JP2002504528A (en) * | 1998-02-26 | 2002-02-12 | ソルヴェイ | Method for hydrofluorination of chlorohydrocarbons |
| JP2006512392A (en) * | 2002-12-30 | 2006-04-13 | ピーシービーユー サービス，インク． | Materials and methods for the conversion of hydrofluorocarbons |
| US9771309B2 (en) | 2005-04-08 | 2017-09-26 | Mexichem Amanco Holding S.A. De C.V. | Chromia based fluorination catalyst |
| US10189757B2 (en) | 2005-04-08 | 2019-01-29 | Mexichem Amanco Holding S.A. De C.V. | Chromia based fluorination catalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2737276B2 (en) | 1998-04-08 |
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