CN101376632A - Method for synthesizing propylene carbonate ester from CO2 and 1, 2-propanediol - Google Patents
Method for synthesizing propylene carbonate ester from CO2 and 1, 2-propanediol Download PDFInfo
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- CN101376632A CN101376632A CNA2008101573147A CN200810157314A CN101376632A CN 101376632 A CN101376632 A CN 101376632A CN A2008101573147 A CNA2008101573147 A CN A2008101573147A CN 200810157314 A CN200810157314 A CN 200810157314A CN 101376632 A CN101376632 A CN 101376632A
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- Prior art keywords
- propylene glycol
- solvent
- reaction
- propylene carbonate
- catalyzer
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a method for synthesizing propylene carbonate from CO2 and 1,2-propylene glycol and belongs to the fine chemical product synthesis field. The method is characterized in that 1,5,7-tri-aza-bicyclo-dec-5-ene is adopted as a catalyst; acetonitrile is adopted as an solvent; in a reactor, the mole ratio of the catalyst to 1,2-propylene glycol is 0.025, and the mole ratio of the solvent to 1,2-propylene glycol is 2; and 1,2-propylene glycol and the introduced CO2 gas under 12 to 14 MPa at 215 to 235 DEG C for 12 to 15 hours. The method has the characteristics that the process is simple, and easy in operation and control, no special process for processing catalyst is required, the industrial production is easily implemented, and during the reaction process, the conversion of propylene glycol is up to 67%, and the yield of propylene carbonate is 82.7%..
Description
Technical field
The present invention relates to a kind of CO in fine chemistry product synthetic method field
2With 1, the method for 2-propylene glycol synthesizing acrylic ester.Be widely used in textile printing and dyeing, high polymer synthesis industry, gas separating technology and electrochemical field.
Background technology
Propylene carbonate (PC) is a kind of organic solvent and fine chemicals synthetic intermediate of excellent property.Synthetic method mainly contains phosgenation, chlorohydrination, ester-interchange method and carbonic acid gas and propylene oxide cycloaddition method, wherein is the most effective synthetic method at present with carbonic acid gas and propylene oxide synthesizing acrylic ester.The catalyzer that by the key problem in technology of carbonic acid gas and propylene oxide cycloaddition reaction synthesizing acrylic ester is.Chinese patent (CN1421431) discloses the method for a kind of synthesizing acrylic ester or NSC 11801, it is to be raw material with urea and propylene glycol (PG) or ethylene glycol (EG), in the presence of solid base catalyst, under the condition of decompression or drum nitrogen, react, react the ammonia that generates to remove, thereby reach the synthesizing acrylic ester of low cost, high conversion, highly selective, reaction conditions gentleness or the method for NSC 11801.The concrete preparation method of the present invention comprises the steps: that the mol ratio with propylene glycol or ethylene glycol and urea is 100-1: 1, solid base catalyst and urea mol ratio are that the ratio of 0.001-10 adds in the reactor, in temperature of reaction is 100-200 ℃, under vacuum tightness 50mmHg-600mmHg or the drum condition of nitrogen gas, the flow velocity of nitrogen is under the condition of 1-1000ml/ml cat.min, reaction 0.5h-20h.The major defect of this invention shows in the preparation of solid base catalyst, causes the entire synthesis process complex process.
Summary of the invention
The purpose of this invention is to provide the CO that a kind of technological process is simple, cost is low, transformation efficiency is high, reaction conditions is gentle
2With 1, the method for 2-propylene glycol synthesizing acrylic ester.
The present invention is with 1,5, and 7-three azabicyclos certain herbaceous plants with big flowers-5-alkene is that catalyzer, second eyeball are solvent, presses catalyzer and 1 in the reactor, and the mol ratio of 2-propylene glycol is 0.025, solvent and 1, and 2-propylene glycol mol ratio is 2 to prepare burden, and injects CO simultaneously
2Gas, at temperature of reaction 215-235 ℃, under the condition of reaction pressure 12-14MPa, reaction times 12-15 hour.
Characteristics of the present invention are: technological process is simple, is easy to operate and control, and need not the processing of special process implementing catalyzer, realizes industrial production easily; The transformation efficiency of raw material propylene glycol is up to 67% in the reaction process, and the propylene carbonate yield is 82.7%.
Embodiment:
Embodiment 1:1,5,7-three azabicyclos certain herbaceous plants with big flowers-5-alkene is that catalyzer, second eyeball are solvent, presses catalyzer and 1 in the reactor, the mol ratio of 2-propylene glycol is 0.025, solvent and 1,2-propylene glycol mol ratio is 2 to prepare burden, and injects CO simultaneously
2Gas, 215 ℃ of temperature of reaction, under the condition of reaction pressure 12MPa, 15 hours reaction times.
Embodiment 2:1,5,7-three azabicyclos certain herbaceous plants with big flowers-5-alkene is that catalyzer, second eyeball are solvent, presses catalyzer and 1 in the reactor, the mol ratio of 2-propylene glycol is 0.025, solvent and 1,2-propylene glycol mol ratio is 2 to prepare burden, and injects CO simultaneously
2Gas, 235 ℃ of temperature of reaction, under the condition of reaction pressure 13MPa, 12 hours reaction times.
Claims (1)
1, a kind of CO
2With 1, the method for 2-propylene glycol synthesizing acrylic ester is characterized in that: with 1,5,7-three azabicyclos certain herbaceous plants with big flowers-5-alkene is that catalyzer, second eyeball are solvent, presses catalyzer and 1 in the reactor, and the mol ratio of 2-propylene glycol is 0.025, solvent and 1,2-propylene glycol mol ratio are 2 to prepare burden, and inject CO simultaneously
2Gas, at temperature of reaction 215-235 ℃, under the condition of reaction pressure 12-14MPa, reaction times 12-15 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101573147A CN101376632A (en) | 2008-09-23 | 2008-09-23 | Method for synthesizing propylene carbonate ester from CO2 and 1, 2-propanediol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101573147A CN101376632A (en) | 2008-09-23 | 2008-09-23 | Method for synthesizing propylene carbonate ester from CO2 and 1, 2-propanediol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101376632A true CN101376632A (en) | 2009-03-04 |
Family
ID=40420377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101573147A Pending CN101376632A (en) | 2008-09-23 | 2008-09-23 | Method for synthesizing propylene carbonate ester from CO2 and 1, 2-propanediol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101376632A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117536A (en) * | 2016-11-30 | 2018-06-05 | 中国科学院大连化学物理研究所 | A kind of method of 1,2-PD and carbon dioxide synthesizing acrylic ester |
| CN110078702A (en) * | 2019-05-30 | 2019-08-02 | 中国科学院过程工程研究所 | A kind of method of poly ion liquid frame catalyst preparation cyclic carbonate |
-
2008
- 2008-09-23 CN CNA2008101573147A patent/CN101376632A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117536A (en) * | 2016-11-30 | 2018-06-05 | 中国科学院大连化学物理研究所 | A kind of method of 1,2-PD and carbon dioxide synthesizing acrylic ester |
| CN108117536B (en) * | 2016-11-30 | 2020-10-02 | 中国科学院大连化学物理研究所 | Method for synthesizing propylene carbonate from 1, 2-propylene glycol and carbon dioxide |
| CN110078702A (en) * | 2019-05-30 | 2019-08-02 | 中国科学院过程工程研究所 | A kind of method of poly ion liquid frame catalyst preparation cyclic carbonate |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20090304 |