CN101570532A - Method for preparing vinyl ethylene carbonate - Google Patents
Method for preparing vinyl ethylene carbonate Download PDFInfo
- Publication number
- CN101570532A CN101570532A CNA200910115523XA CN200910115523A CN101570532A CN 101570532 A CN101570532 A CN 101570532A CN A200910115523X A CNA200910115523X A CN A200910115523XA CN 200910115523 A CN200910115523 A CN 200910115523A CN 101570532 A CN101570532 A CN 101570532A
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- China
- Prior art keywords
- ethylene carbonate
- vinyl ethylene
- reaction
- thinner
- epoxy butylene
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- 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.)
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a method for preparing vinyl ethylene carbonate; epoxybutene and excessive carbon dioxide gas are used as raw materials; vinyl ethylene carbonate is obtained by a reaction under a catalyst. The invention is characterized in that tetraethylammonium bromide is used as the catalyst, the reaction temperature is 120-180 DEG C, the reaction pressure is 3.0-5 MPa and vinyl ethylene carbonate which accounts to 10-50 wt% of epoxybutene is used as a diluent. The invention enjoys mild reaction condition, simple operation, high yield and purity of reaction product and low manufacturing cost.
Description
Technical field
The present invention relates to a kind of preparation method of vinyl ethylene carbonate.
Background technology
Vinyl ethylene carbonate is the novel lithium-ion battery electrolytes additive of a clock, adds this material of trace in lithium-ion battery electrolytes, can effectively improve the cycle charge discharge electrical property of lithium ion battery.In the prior art, vinyl ethylene carbonate is mainly reacted under the effect of sodium hydroxide catalyst by epoxy butylene and carbonic acid gas and makes, but this method condition harshness, and contain a large amount of by products in the products obtained therefrom, yield is low.
Summary of the invention
Technical problem to be solved by this invention is in order to overcome the deficiencies in the prior art, provides a kind of yield height, purity is good and the preparation method of the simple vinyl ethylene carbonate of technological operation.
For solving above technical problem, the present invention takes following technical scheme:
A kind of preparation method of vinyl ethylene carbonate, with epoxy butylene and excess carbon dioxide gas is raw material, reaction generates vinyl ethylene carbonate under the effect of catalyzer, particularly, described catalyzer is the tetraethyl-amine bromide, carry out under the described existence that is reflected at 120 ℃-180 ℃ of temperature, pressure 3.0MPa-5MPa and thinner vinyl ethylene carbonate, catalyst consumption is the 0.1%-1% of the weight of epoxy butylene, is the 10%-50% of the weight of epoxy butylene as the amount of the vinyl ethylene carbonate of thinner.
Be preferably the 30%-50% of the weight of epoxy butylene as the amount of the vinyl ethylene carbonate of thinner.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
The present invention adopts cheap tetraethyl-amine bromide as catalyzer, and under relatively low temperature and pressure, carry out, and before reaction is carried out, add a certain amount of product in advance as thinner, on the one hand, and the reaction conditions gentleness, technological operation is simple; On the other hand, improve the yield (greater than 85%) and the purity (greater than 98%) of reaction product.
Embodiment
The present invention is further detailed explanation below in conjunction with specific embodiment, but be not limited to these embodiment.
Embodiment 1
In 500 milliliters autoclave, add the epoxy butylene of 105 grams and the tetraethyl-amine bromide of 0.2 gram, the vinyl ethylene carbonate of 31.5 grams, behind the nitrogen replacement, be warming up to 120 ℃, feed carbonic acid gas to pressure 4.5MPa, after do not heat, reaction system can oneself heat up, be warming up to 160 ℃ of top temperatures, top pressure 4.8MPa reacts after 1 hour, finish reaction, obtain colourless transparent liquid 185 grams in 120 ℃ of left and right sides underpressure distillation and be vinyl ethylene carbonate, GC purity 98%, yield 88%.
Embodiment 2
In 500 milliliters autoclave, add the epoxy butylene of 105 grams and the tetraethyl-amine bromide of 0.8 gram, the vinyl ethylene carbonate of 31.5 grams, behind the nitrogen replacement, be warming up to 120 ℃, feed carbonic acid gas to 4.5MPa, after do not heat, reaction system can own intensification, is warming up to 165 ℃ of top temperatures, top pressure 4.9MPa, react after 1 hour, finish reaction, obtain colourless transparent liquid 187 grams in 120 ℃ of left and right sides underpressure distillation and be vinyl ethylene carbonate, GC purity 99%, yield 90%.
Embodiment 3
In 500 milliliters autoclave, add the epoxy butylene of 105 grams and the tetraethyl-amine bromide of 0.8 gram, the vinyl ethylene carbonate of 52.5 grams, behind the nitrogen replacement, be warming up to 120 ℃, feed carbonic acid gas to 4.5MPa, after do not heat, reaction system can own intensification, is warming up to 158 ℃ of top temperatures, top pressure 4.7MPa, react after 1 hour, finish reaction, obtain colourless transparent liquid 209 grams in 120 ℃ of left and right sides underpressure distillation and be vinyl ethylene carbonate, GC purity 99%, yield 90%.
Above-described only is preferred implementation of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from patent principle of the present invention, can also make some distortion and improvement, these also should be considered as belonging to protection scope of the present invention.
Claims (2)
1, a kind of preparation method of vinyl ethylene carbonate, with epoxy butylene and excess carbon dioxide gas is raw material, reaction generates vinyl ethylene carbonate under the effect of catalyzer, it is characterized in that: described catalyzer is the tetraethyl-amine bromide, carry out under the described existence that is reflected at 120 ℃-180 ℃ of temperature, pressure 3.0MPa-5MPa and thinner vinyl ethylene carbonate, described catalyst consumption is the 0.1%-1% of the weight of epoxy butylene, is the 10%-50% of the weight of epoxy butylene as the amount of the vinyl ethylene carbonate of thinner.
2, the preparation method of a kind of vinyl ethylene carbonate according to claim 1 is characterized in that: the amount as the vinyl ethylene carbonate of thinner is the 30%-50% of the weight of epoxy butylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910115523XA CN101570532A (en) | 2009-06-11 | 2009-06-11 | Method for preparing vinyl ethylene carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910115523XA CN101570532A (en) | 2009-06-11 | 2009-06-11 | Method for preparing vinyl ethylene carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101570532A true CN101570532A (en) | 2009-11-04 |
Family
ID=41230030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200910115523XA Pending CN101570532A (en) | 2009-06-11 | 2009-06-11 | Method for preparing vinyl ethylene carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101570532A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116496243A (en) * | 2023-05-08 | 2023-07-28 | 大连华一锂电科技有限公司 | Method for efficiently synthesizing vinyl ethylene carbonate |
-
2009
- 2009-06-11 CN CNA200910115523XA patent/CN101570532A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116496243A (en) * | 2023-05-08 | 2023-07-28 | 大连华一锂电科技有限公司 | Method for efficiently synthesizing vinyl ethylene carbonate |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091104 |