Check patentability & draft patents in minutes with Patsnap Eureka AI!

1, 1, 2, 2, 3, 3, 4-heptafluorocyclopentane as well as preparation method and application thereof

A technology of heptafluorocyclopentane and contact reaction, which is applied to the preparation of halogenated hydrocarbons, preparation of dehalogenation, chemical instruments and methods, etc., to achieve the effect of easy to obtain raw materials, not easy to deposit carbon, and mild reaction conditions

Pending Publication Date: 2022-06-10
STATE GRID HUNAN ELECTRIC POWER +2
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to solve the existing reaction in the synthetic method of 1,1,2,2,3,3,4-heptafluorocyclopentane in the prior art Problems of harsh conditions, low reaction yield and difficult access to raw materials

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
  • 1, 1, 2, 2, 3, 3, 4-heptafluorocyclopentane as well as preparation method and application thereof
  • 1, 1, 2, 2, 3, 3, 4-heptafluorocyclopentane as well as preparation method and application thereof
  • 1, 1, 2, 2, 3, 3, 4-heptafluorocyclopentane as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] S1. Contact the first solution with the carrier to perform impregnation treatment to obtain a catalyst precursor; the first solution is composed of at least Pd, Pt, Ru, Co, Ni, Cu, Bi, Zn, B, P a salt solution of an element;

[0034] S2. performing a reduction reaction on the catalyst precursor and a reducing agent.

[0035] Preferably, in step S1, the conditions of the immersion treatment at least include: a temperature of 20-40° C. and a time of 6-12 hours.

[0036] Preferably, in step S2, the reducing agent is at least one selected from hydrogen, potassium borohydride, and sodium borohydride.

[0037] Preferably, in step S2, the reduction reaction conditions at least include: a temperature of 50-200° C. and a time of 1-15 h.

[0038] Preferably, in step S2, the preparation method of the catalyst A further includes: before performing the reduction treatment, first drying the catalyst precursor.

[0039] Preferably, the drying treatment conditions at least include: ...

preparation example 1

[0067] S1. At 25°C, dissolve 0.83g of palladium chloride in 20mL of hydrochloric acid, and add 100g of AlF 3 , stand still for 12h, and filter to obtain the catalyst precursor;

[0068] S2. At 60°C, reduce all the catalyst precursors obtained above with 17.5 g of 1 wt% sodium borohydride solution for 2 hours to obtain catalyst A1;

[0069] In catalyst A1, the content of active metal element Pd is 0.5wt%, the content of promoter element B is 0.05wt%, and the balance is AlF 3 carrier.

[0070] Preparation example 2

preparation example 2

[0072] S1. At 25°C, add 0.86g of platinum tetrachloride into deionized water, and add 100g of AlF 3 , stand still for 12h, and filter to obtain the catalyst precursor;

[0073] S2. At 80°C, reduce all the catalyst precursors obtained above with 17.5 g of 1 wt% sodium borohydride solution for 2 hours to obtain catalyst A2;

[0074] In catalyst A2, the content of active metal element Pt is 0.5wt%, the content of promoter element B is 0.05wt%, and the balance is AlF 3 carrier.

[0075] Preparation example 3

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

No PUM Login to View More

Abstract

The invention relates to the technical field of organic synthesis, and discloses 1, 1, 2, 2, 3, 3, 4-heptafluorocyclopentane as well as a preparation method and application thereof. The method comprises the following steps: in the presence of a catalyst A, carrying out first contact reaction on a compound as shown in a formula (I) and hydrogen; the catalyst A comprises a carrier and active metal elements loaded on the carrier; in the catalyst A, the carrier is activated carbon or AlF3, and the active metal element is selected from at least one of Pd, Pt and Ru; in formula (I), R is Br or I. The method provided by the invention has the advantages of easily available raw materials, mild reaction conditions, high reaction yield and high target product selectivity.

Description

technical field [0001] The invention relates to the technical field of organic synthesis, in particular to 1,1,2,2,3,3,4-heptafluorocyclopentane and its preparation method and application. Background technique [0002] 1,1,2,2,3,3,4-Heptafluorocyclopentane (F7A) is a zero ozone depletion potential (ODP=0), low global warming potential (GWP100=274), low toxicity, non-flammable Environmentally friendly hydrofluorocyclic hydrocarbons (c-HFC) substances. Because of its excellent environmental performance, F7A is recognized as the fourth-generation ideal halon substitute after chlorofluorocarbons, hydrofluorocarbons, and perfluorocarbons. [0003] So far, among the known synthetic methods of F7A, there have been many reports using the catalytic hydrogenation process. [0004] Among them, GB1046095A, WO1994007829A1, and WO98051650A1 all disclose methods for synthesizing F7A by catalytic hydrogenation using octafluorocyclopentene as a starting material. However, the product obta...

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 Applications(China)
IPC IPC(8): C07C17/23C07C23/08B01J27/13B01J23/644B01J23/44A62D1/00
CPCC07C17/23C07C17/208B01J27/13B01J23/44B01J23/6447A62D1/00A62D1/0092C07C2601/08C07C23/08
Inventor 梁平陈宝辉吴传平周天念潘碧宸刘毓
Owner STATE GRID HUNAN ELECTRIC POWER
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