Method for producing 1-chloro-2, 3, 3-trifluoropropene
A technology for the production of trifluoropropene, which is applied in the fields of chemical instruments and methods, preparation of halogenated hydrocarbons, preparation of dehydrohalogenation, etc., can solve the problem of removing water without record, and achieve the effect of high-efficiency manufacturing
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 Embodiment approach ＞
[0028] The method for producing 1233yd as the first embodiment of the present invention is to make 1233yd and one or more compounds selected from water, 1-chloro-3,3-difluoro-1-propyne, oxides, and HCFC-244ca A method for producing 1233yd in which a composition is contacted with a solid adsorbent to remove one or more compounds selected from the group consisting of water, 1-chloro-3,3-difluoro-1-propyne, oxides, and HCFC-244ca. Hereinafter, "one or more compounds selected from water, 1-chloro-3,3-difluoro-1-propyne, oxides, and HCFC-244ca" is also referred to as "impurity (A)", which contains 1233yd and impurity The composition of (A) is also referred to as "the composition for purification". By bringing the purification composition into contact with a solid adsorbent, the impurity (A) is removed from the purification composition, 1233yd is purified, and high-purity 1233yd can be produced. Here, with regard to the removal of the impurity (A), some or all of it may be removed....
no. 2 Embodiment approach ＞
[0139] The method for producing 1233yd according to the second embodiment of the present invention includes the step of producing a purification composition containing 1233yd.
[0140] In the production method of this embodiment, the reaction product obtained in the 1233yd production process shown in (I) or (II) or a mixed composition obtained by removing acidic substances and the like from the reaction product can be used as a purification composition . In this manner, the impurity (A) can be efficiently removed from the composition containing 1233yd and the impurity (A) by performing the purification described in the first embodiment on the purification composition.
[0141] (1) using chromium oxide as a catalyst to make HCFC-244ca react with hydrogen fluoride in the gas phase under a nitrogen stream
[0142] A raw material composition containing HCFC-244ca and hydrogen fluoride was reacted in a gas phase in a reactor having a catalyst layer filled with chromium oxide to pr...
Embodiment
[0150] Hereinafter, although an Example demonstrates this invention, this invention is not limited to these Examples.
[0151] (Analytical method)
[0152] The content (content ratio) of components other than water and hydroperoxide in the composition to be analyzed was analyzed by gas chromatography. DB-1301 (length 60 m x inner diameter 250 μm x thickness 1 μm, manufactured by Agilent Technologies Co., Ltd.) was used as a column. The water content was analyzed by a Karl Fischer moisture meter and the hydroperoxide content by the hydroperoxide assay described above.
[0153] In addition, using the analysis results of the above-mentioned gas chromatography, Karl Fischer moisture meter, and hydroperoxide measurement method, the amount of 1-chloro-3,3-difluoro-1-propane relative to the total amount of the composition to be analyzed was calculated. The ratio (mass %) of alkyne, the ratio (mass %) of water, the ratio (mass ppm) of oxide, and the ratio (mass %) of HCFC-244ca.
...
PUM
| Property | Measurement | Unit |
|---|---|---|
| boiling point | aaaaa | aaaaa |
| boiling point | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More