Supercharge Your Innovation With Domain-Expert AI Agents!

Method for producing hydrochlorofluoroolefin and method for producing 2,3,3,3-tetrafluoropropene

A technology for hydrochlorofluoroolefins and a manufacturing method, which is applied to the preparation of halogenated hydrocarbons, organic chemistry methods, chemical instruments and methods, etc., can solve the problems that only one geometric isomer is not suitable for use, and achieves the suppression of by-products. Generating, Efficiently Manufactured Effects

Active Publication Date: 2020-12-18
ASAHI GLASS CO LTD
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, among these methods, HCFO-1224yd is usually obtained as a mixture of E-body and Z-body, which is not suitable for the case of using only one geometric isomer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing hydrochlorofluoroolefin and method for producing 2,3,3,3-tetrafluoropropene
  • Method for producing hydrochlorofluoroolefin and method for producing 2,3,3,3-tetrafluoropropene
  • Method for producing hydrochlorofluoroolefin and method for producing 2,3,3,3-tetrafluoropropene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0115] Examples are described below, but the present invention is not limited thereto. Examples 1-20 and Examples 24-25 are examples, and Examples 21-23 are reference examples.

[0116] (catalyst preparation example 1)

[0117] 81.5 mL of chromium-magnesium composite oxide catalyst (Cr 2 o 3 : 98% by mass, MgO: 2% by mass, AG-23, Sakai Chemical Industry Co., Ltd. (Sakai Chemical)), nitrogen (N 2 ) while heating to 200°C. The temperature was maintained to dry the catalyst until no outflow of water was observed at the outlet of the reactor. After drying of the catalyst, the N 2 The gas and HCFC-22 circulate together in the reactor, and when the hot spot caused by the activation of the filled catalyst reaches the outlet end of the reactor, the temperature of the reactor is raised to 250°C, and the state is maintained for 8 hours, and the catalyst activation treatment is carried out , Catalyst 1 was obtained.

[0118] (catalyst preparation example 2)

[0119] Catalyst 2 wa...

Synthetic example 1

[0132] (Synthesis Example 1: Production of HCFO-1224yd)

[0133] HCFO-1224yd was produced by the same method as the method described in Patent Document 3. In a tubular reactor made of stainless steel (SUS316), palladium-supported activated carbon obtained by supporting palladium on activated carbon was filled to form a catalyst layer. Thereafter, the reactor was kept at 80° C. in a heating furnace, and hydrogen (H 2 ) / CFO-1214ya molar ratio = 1 / 1 mixed gas mixture of CFO-1214ya and hydrogen. At this time, the above mixed gas was supplied into the reactor so that the residence time of the mixed gas of CFO-1214ya and hydrogen in the catalyst layer was 25 seconds.

[0134] The outlet gas obtained from the above reactor was passed through a 10% by mass potassium hydroxide (KOH) aqueous solution to remove acidic components, and then passed through a dehydration tower filled with synthetic zeolite (Molecular Sieve 4A (Molecular Sieve 4A)). dehydration. The dehydrated outlet gas ...

example 1

[0136] A tubular reactor made of stainless steel (SUS316) with an inner diameter of 23.4 mm and a height of 400 mm (hereinafter also referred to as a reactor) was filled with 81.5 mL of the catalyst 1 . With the raw material composition A of 27.9NmL / min and the nitrogen (N 2 ) ratio, and preheated to 50°C through a heating furnace. Thereafter, a mixed gas of the preheated raw material composition A and nitrogen was circulated in the reactor kept at 50° C. by a heating furnace under conditions close to atmospheric pressure. The outlet gas was collected from the reactor and analyzed by GC (gas chromatography). As a result, the composition of the outlet gas was 88.2 (GC area %) for HCFO-1224yd(Z) in terms of area percentage in GC (GC area %) ), HCFO-1224yd(E) was 11.1% (GC area %). In addition, the reaction time (the residence time of the raw material composition A in the reactor) was 49.5 seconds.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to View More

Abstract

The present invention provides an industrially advantageous and efficient method for isomerizing the E-form of HCFO-1224yd or HCFO-1223xd to produce its Z-form. This method is a method of producing HCFO (Z body) by isomerizing the HCFO (E body) contained in the raw material composition under specific isomerization conditions of HCFO (E body) .

Description

technical field [0001] The present invention relates to a method for producing hydrochlorofluoroolefins and a method for producing 2,3,3,3-tetrafluoropropene. Background technique [0002] (Z)-1-chloro-2,3,3,3-tetrafluoropropene (HCFO-1224yd(Z)) and (Z)-1,2-dichloro-3,3,3-trifluoropropene (HCFO-1224yd(Z)) -1223xd(Z)) can be used as foaming agent for rigid polyurethane foam, solvent, detergent, refrigerant, working fluid, propellant, raw material of fluororesin, etc. [0003] In this specification, for halogenated hydrocarbons, the abbreviation of the compound is written in parentheses after the compound name, and the abbreviation is used instead of the compound name as necessary. In addition, a compound having a double bond in the molecule and having an E-body and a Z-body is indicated by adding (E) and (Z) at the end of the abbreviations of the respective compound names of the E-body and the Z-body. In addition, the absence of (E) and (Z) at the end of the abbreviation of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07C17/358C07C17/23C07C21/18B01J21/06B01J23/06B01J23/26B01J27/122B01J27/125B01J27/128C07B61/00
CPCB01J21/06B01J23/06B01J23/26B01J27/122B01J27/125B01J27/128C07B61/00C07C17/23C07C21/18C07C17/358B01J21/04B01J23/44B01J37/08
Inventor 竹内优冈本秀一
Owner ASAHI GLASS CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com