CN101092406A - Method for preparing propylene oxide from epoxidation of propylene - Google Patents
Method for preparing propylene oxide from epoxidation of propylene Download PDFInfo
- Publication number
- CN101092406A CN101092406A CNA2006100279138A CN200610027913A CN101092406A CN 101092406 A CN101092406 A CN 101092406A CN A2006100279138 A CNA2006100279138 A CN A2006100279138A CN 200610027913 A CN200610027913 A CN 200610027913A CN 101092406 A CN101092406 A CN 101092406A
- Authority
- CN
- China
- Prior art keywords
- propylene
- grams per
- per liter
- epoxidation
- content
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Epoxy Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
This invention relates to a method for preparing propylene oxide by epoxidation of propylene. The present technique utilizes H2O2 aqueous solution as the oxidant, and quaternary ammonium salt of phosphor-tungstic heteropoly acid as the catalyst to prepare propylene oxide. Due to the acidity of phosphor-tungstic heteropoly acid, and the acidity produced by combination of H2O2 and the catalyst, propylene oxide undergoes ring-opening reaction, which may deteriorate the selectivity of propylene oxide. The method in this invention utilizes propylene and H2O2 aqueous solution as the raw materials, quaternary ammonium salt of phosphor-tungstic heteropoly acid as the catalyst, and at least one of toluene, benzene, ethylbenzene, cumene and chloroform as the solvent, and adds an alkaline additive into the reaction system to solve the above problem. The method can be used in industrial production of propylene oxide.
Description
Technical field
The present invention relates to a kind of method of preparing epoxypropane by epoxidation of propene.
Background technology
Propylene oxide is important basic chemical industry raw material, is the third-largest organic chemical industry's product that output is only second to polypropylene and vinyl cyanide in the acryloyl derivative.
Chlorohydrination and conjugated oxidation (Halcon method) are the main method of present industrial production PO.These two kinds of methods account for more than 99% of world's overall throughput, and wherein conjugated oxidation surpasses about 60%.Chlorohydrination is a raw material with propylene and chlorine, and flow process is shorter, technical maturity, operational load elasticity is big, product selectivity is good, yield is high, produce safer, less demanding to raw material propylene purity, less investment.Shortcoming is that equipment is had corrosion, produces the waste water that contains calcium chloride.Domestic each production of propylene oxide enterprise all adopts this method at present.
Conjugated oxidation has been that the conjugated oxidation of raw material has been obtained development rapidly with Trimethylmethane or ethylbenzene, and has become one of major industry method of present production propylene oxide since 1969 realize industrialization.The advantage of this method is the pollution that overcome chlorohydrination, corrode and need shortcomings such as chlorine resource; Shortcoming is that long flow path, investment are big, the co-product amount is big.
Document " influence factor of reaction control phase transfer catalyst catalytic epoxidation of propone reaction " (catalysis journal, 2005,26 (11): 1005～1010) aqueous solution that discloses with hydrogen peroxide is oxygenant, on phosphorus heteropoly tungstic acid catalyzer epoxidation of propylene is become propylene oxide.Yet, when the aqueous solution with hydrogen peroxide is oxygenant, because the acidity of phosphorus heteropoly tungstic acid itself, and, cause the propylene oxide selectivity to descend, less than 30% because hydrogen peroxide and catalyzer in conjunction with the acidity that produces, make the propylene oxide generation open loop of reaction generation.
Summary of the invention
Technical problem to be solved by this invention is with H in the prior art
2O
2The aqueous solution is oxygenant, when being the Preparation of Catalyst propylene oxide with the quaternary ammonium salt phosphor-tungstic heteropoly acid, because the acidity of phosphorus heteropoly tungstic acid itself, and hydrogen peroxide and catalyzer are in conjunction with the acidity that produces, the propylene oxide generation open loop that reaction is generated, and the problem that causes the propylene oxide selectivity to descend provides a kind of method of new preparing epoxypropane by epoxidation of propene.This method has the ring opening hydrolysis reaction that suppresses propylene oxide, improves optionally characteristics of propylene oxide.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of method of preparing epoxypropane by epoxidation of propene, with propylene and aqueous hydrogen peroxide solution is raw material, to be selected from least a in toluene, benzene, ethylbenzene, isopropyl benzene or the chloroform is solvent, with the quaternary ammonium salt phosphor-tungstic heteropoly acid is catalyzer, in the presence of alkaline assistant, be 20～100 ℃ in temperature of reaction, reaction pressure is counted to react under 0～3.0MPa condition with gauge pressure and was got propylene oxide in 0.5～24 hour; Be benchmark wherein with the reaction solution volume, the content of propylene is 50～200 grams per liter reaction solutions, the content of hydrogen peroxide is 5～100 grams per liter reaction solutions, and the content of quaternary ammonium salt phosphor-tungstic heteropoly acid is 1～20 grams per liter reaction solution, and the content of alkaline assistant is 0.01～10 grams per liter reaction solution; Described alkaline assistant is selected from least a in Tetramethylammonium hydroxide, tetraethyl ammonium hydroxide, TPAOH, TBAH, triethylamine, diethylamine, Trimethylamine 99, tripropyl amine, Tributylamine, alkaline carbonate, alkaline earth metal carbonate, alkali metal hydrocarbonate or the alkali metal bicarbonates.
In the technique scheme, the preferred version of propylene is for being selected from chemical grade propylene or polymerization-grade propylene.Quaternary ammonium salt phosphor-tungstic heteropoly acid is selected from least a in octadecyl trimethyl ammonium Lin Wusuanyan, cetyltrimethyl ammonium Lin Wusuanyan or the dodecyl trimethyl ammonium Lin Wusuanyan.With the reaction solution volume is benchmark, the content preferable range of propylene is 70～150 grams per liter reaction solutions, the content preferable range of hydrogen peroxide is 10～50 grams per liter reaction solutions, the content preferable range of quaternary ammonium salt phosphor-tungstic heteropoly acid is 2～10 grams per liter reaction solutions, and the content preferable range of alkaline assistant is 0.1～5 grams per liter reaction solution.The temperature of reaction preferable range is 25～80 ℃, and the reaction times preferable range is 1～12 hour.
The supporting use of alkaline assistant among the present invention and heteropolyacid salt catalyst, because when heteropolyacid salt catalyst exists, catalystic converter system departs from neutrality, so the product propylene oxide easily and water generation hydrolysis reaction and open loop.And when an amount of alkaline assistant joined catalystic converter system, they had just formed buffered soln with heteropolyacid salt, thus make reaction system be tending towards neutral state and to a certain extent maintenance system pH value within the specific limits.Therefore the ring opening hydrolysis of propylene oxide reacts and oxygenant H
2O
2Pyrolysis can be inhibited, improved the selectivity of propylene oxide, obtained better technical effect.
The invention will be further elaborated below by embodiment.
Embodiment
[embodiment 1]
Take by weighing 10.0 gram wolframic acids and join 40 milliliter of 30 (weight) %H
2O
2In the aqueous solution, stir and be heated to 60 ℃, kept 60 minutes, obtain colourless transparent solution.In this solution, add 2.45 milliliters of phosphate aqueous solutions (containing 40 milliliters of phosphoric acid in 100 milliliters of phosphate aqueous solutions), stirred 30 minutes with dilution of 80 ml distilled waters and continuation.6.9 gram palmityl trimethyl ammonium chlorides and 3.0 are restrained the mixed solution that octadecyl trimethyl ammonium chloride are dissolved in 160 milliliters of ethylene dichloride, be added drop-wise to fast in the above-mentioned solution, and 60 minutes generation precipitations are stirred in continuation, the pH value that is precipitated to filtrate with distilled water wash is about 4, filter cake is placed Rotary Evaporators, obtain catalyst prod 60 ℃ of vacuum-dryings.
[embodiment 2]
In 300 milliliters of tank reactors, add 120 milliliters of toluene, 10 gram 30.0 (weight) %H
2O
2, 0.5 gram [embodiment 1] synthetic catalyzer and 0.1 gram Tetramethylammonium hydroxide, feed 40 gram propylene, reaction is 5 hours under 55 ℃, 2.0MPa condition, reaction result sees Table 1.
[embodiment 3]
In 300 milliliters of tank reactors, add 120 milliliters of chloroforms, 10 gram 40.0 (weight) %H
2O
2, 0.5 gram [embodiment 1] synthetic catalyzer and 0.08 gram sodium bicarbonate, feed 35 gram propylene, reaction is 3 hours under 55 ℃, 2.8MPa condition, reaction result sees Table 1.
[embodiment 4]
In 300 milliliters of tank reactors, add 120 milliliters of chloroforms, 6 gram 50.0 (weight) %H
2O
2, 0.5 gram [embodiment 1] synthetic catalyzer and 0.04 gram saleratus, feed 25 gram propylene, reaction is 8 hours under 60 ℃, 2.5MPa condition, reaction result sees Table 1.
[embodiment 5]
In 300 milliliters of tank reactors, add 120 milliliters of toluene, 5 gram 60.0 (weight) %H
2O
2, 0.5g gram [embodiment 1] synthetic catalyzer and 0.1 gram sodium hydrogen phosphate, feed 30 gram propylene, reaction is 5 hours under 45 ℃, 2.2MPa condition, reaction result sees Table 1.
[embodiment 6]
In 300 milliliters of tank reactors, add 300 milliliters of chloroforms, 10 gram 30.0% (weight) H
2O
2, 0.5 gram [embodiment 1] synthetic catalyzer and 0.08 gram tetraethyl ammonium hydroxide, feed 20 gram propylene, reaction is 10 hours under 40 ℃, 2.5MPa condition, reaction result sees Table 1.
[embodiment 7]
In 300 milliliters of tank reactors, add 120 milliliters of toluene, 10 gram 30.0 (weight) %H
2O
2, 0.5 gram [embodiment 1] synthetic catalyzer and 0.06 gram Tetramethylammonium hydroxide, feed 30 gram propylene, reaction is 5 hours under 40 ℃, 2.5MPa condition, reaction result sees Table 1.
[comparative example 1]
In 300 milliliters of tank reactors, add 120 milliliters of toluene, 10 gram 30.0 (weight) %H
2O
2, 0.5 gram [embodiment 1] synthetic catalyzer, feed 40 gram propylene, reaction is 5 hours under 60 ℃, 2.5MPa condition, reaction result sees Table 1.
Table 1
| Embodiment | The propylene oxide concentrations grams per liter | Propylene oxide selectivity % | H 2O 2Transformation efficiency % |
| Embodiment 2 | 34 | 93.6 | 93.3 |
| Embodiment 3 | 44 | 90.5 | 92.8 |
| Embodiment 4 | 36 | 93.1 | 96.8 |
| Embodiment 5 | 35 | 92.3 | 90.9 |
| Embodiment 6 | 21 | 92.6 | 93.6 |
| Embodiment 7 | 34 | 90.8 | 95.7 |
| Comparative example 1 | 10 | 26.9 | 92.0 |
Claims (6)
1, a kind of method of preparing epoxypropane by epoxidation of propene, with propylene and aqueous hydrogen peroxide solution is raw material, to be selected from least a in toluene, benzene, ethylbenzene, isopropyl benzene or the chloroform is solvent, with the quaternary ammonium salt phosphor-tungstic heteropoly acid is catalyzer, in the presence of alkaline assistant, in temperature of reaction is 20～100 ℃, and reaction pressure is counted to react under 0～3.0MPa condition with gauge pressure and got propylene oxide in 0.5～24 hour; Be benchmark wherein with the reaction solution volume, the content of propylene is 50～200 grams per liter reaction solutions, the content of hydrogen peroxide is 5～100 grams per liter reaction solutions, and the content of quaternary ammonium salt phosphor-tungstic heteropoly acid is 1～20 grams per liter reaction solution, and the content of alkaline assistant is 0.01～10 grams per liter reaction solution; Described alkaline assistant is selected from least a in Tetramethylammonium hydroxide, tetraethyl ammonium hydroxide, TPAOH, TBAH, triethylamine, diethylamine, Trimethylamine 99, tripropyl amine, Tributylamine, alkaline carbonate, alkaline earth metal carbonate, alkali metal hydrocarbonate or the alkali metal bicarbonates.
2, the method for preparing epoxypropane by epoxidation of propene according to claim 1 is characterized in that propylene is chemical grade propylene or polymerization-grade propylene.
3, the method for preparing epoxypropane by epoxidation of propene according to claim 1 is characterized in that described quaternary ammonium salt phosphor-tungstic heteropoly acid is selected from least a in octadecyl trimethyl ammonium Lin Wusuanyan, cetyltrimethyl ammonium Lin Wusuanyan or the dodecyl trimethyl ammonium Lin Wusuanyan.
4, the method for preparing epoxypropane by epoxidation of propene according to claim 1, it is characterized in that with the reaction solution volume be benchmark, the content of propylene is 70～150 grams per liter reaction solutions, the content of hydrogen peroxide is 10～50 grams per liter reaction solutions, the content of quaternary ammonium salt phosphor-tungstic heteropoly acid is 2～10 grams per liter reaction solutions, and the content of alkaline assistant is 0.1～5 grams per liter reaction solution.
5, the method for preparing epoxypropane by epoxidation of propene according to claim 1 is characterized in that temperature of reaction is 25～80 ℃.
6, the method for preparing epoxypropane by epoxidation of propene according to claim 1 is characterized in that the reaction times is 1～12 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100279138A CN100532371C (en) | 2006-06-21 | 2006-06-21 | Method for preparing propylene oxide from epoxidation of propylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100279138A CN100532371C (en) | 2006-06-21 | 2006-06-21 | Method for preparing propylene oxide from epoxidation of propylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092406A true CN101092406A (en) | 2007-12-26 |
| CN100532371C CN100532371C (en) | 2009-08-26 |
Family
ID=38990862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100279138A Active CN100532371C (en) | 2006-06-21 | 2006-06-21 | Method for preparing propylene oxide from epoxidation of propylene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100532371C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564697B (en) * | 2008-04-24 | 2010-12-22 | 中国石油化工股份有限公司 | Reaction control phase transfer catalyst and application thereof in epoxidation reaction |
| CN102746257A (en) * | 2012-07-03 | 2012-10-24 | 淮阴工学院 | Method for preparing epichlorohydrin by chloropropene epoxidation |
| CN103880780A (en) * | 2012-12-20 | 2014-06-25 | 中国科学院大连化学物理研究所 | Epoxidation method for preparing epoxy propane from liquid propylene |
| WO2019196681A1 (en) * | 2018-04-10 | 2019-10-17 | 江苏扬农化工集团有限公司 | Process for preparing epichlorohydrin by means of direct epoxidation of chloropropene, modified heteropolyacid immobilized catalyst and preparation method therefor |
| CN111253340A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Method for preparing propylene oxide by propylene epoxidation |
| CN111253342A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Method for catalyzing olefin epoxidation by heteropoly acid quaternary ammonium salt |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880782B (en) * | 2012-12-20 | 2016-08-24 | 中国科学院大连化学物理研究所 | A kind of method preparing expoxy propane |
-
2006
- 2006-06-21 CN CNB2006100279138A patent/CN100532371C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564697B (en) * | 2008-04-24 | 2010-12-22 | 中国石油化工股份有限公司 | Reaction control phase transfer catalyst and application thereof in epoxidation reaction |
| CN102746257A (en) * | 2012-07-03 | 2012-10-24 | 淮阴工学院 | Method for preparing epichlorohydrin by chloropropene epoxidation |
| CN103880780A (en) * | 2012-12-20 | 2014-06-25 | 中国科学院大连化学物理研究所 | Epoxidation method for preparing epoxy propane from liquid propylene |
| CN103880780B (en) * | 2012-12-20 | 2016-06-15 | 中国科学院大连化学物理研究所 | A kind of method that propylene liquid phase epoxidation prepares expoxy propane |
| WO2019196681A1 (en) * | 2018-04-10 | 2019-10-17 | 江苏扬农化工集团有限公司 | Process for preparing epichlorohydrin by means of direct epoxidation of chloropropene, modified heteropolyacid immobilized catalyst and preparation method therefor |
| CN111253340A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Method for preparing propylene oxide by propylene epoxidation |
| CN111253342A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Method for catalyzing olefin epoxidation by heteropoly acid quaternary ammonium salt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100532371C (en) | 2009-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100532371C (en) | Method for preparing propylene oxide from epoxidation of propylene | |
| CN101045716B (en) | Production method of epoxy propane | |
| CN103265405B (en) | Method for preparing 1,2-cyclohexanediol through carrying out catalytic oxidation on cyclohexene by using phase transfer catalyst | |
| CN101045717A (en) | Method of directly catalytic epoxidation | |
| CN102558100A (en) | Method for catalyzing propene epoxidation by taking Titanium Silicalite-1(TS-1) as catalyst | |
| CN101613424A (en) | A kind of method for preparing polybutadiene epoxy resin | |
| CN101279897B (en) | Method for synthesizing butanediol ethere | |
| CN101279961B (en) | Method for preparing epoxy chloropropane by epoxidation of propylene chloride | |
| CN103880782B (en) | A kind of method preparing expoxy propane | |
| CN113559925B (en) | Heteropoly acid catalyst, preparation method thereof and application thereof in preparing adipic acid by cyclohexane oxidation | |
| CN103418434A (en) | Homogeneous molybdenum base epoxidation catalyst | |
| CN102671702A (en) | Method for preparing zinc oxide ionic bond grafting and coordination supported tetra(4-carboxyl phenyl) metalloporphyrin catalyst | |
| CN106865553B (en) | A kind of activation method for the resin catalyst preparing trichlorosilane | |
| CN109126890B (en) | Preparation method of olefin epoxidation catalyst of polyaniline-loaded heteropoly acid | |
| CN100575349C (en) | The method of preparing epichlorohydrin by chloropropene epoxidation | |
| US9873653B2 (en) | Heterogeneous catalyst for production of 3-hydroxypropionic acid from allyl alcohol, and method for preparation of 3-hydroxypropionic acid from allyl alcohol using the same | |
| CN103880780B (en) | A kind of method that propylene liquid phase epoxidation prepares expoxy propane | |
| CN103288065A (en) | Process for preparing disodium hydrogen phosphate from glyphosate | |
| CN111068781A (en) | Preparation of heteropolyacid catalyst and application of heteropolyacid catalyst in chloropropene epoxidation | |
| CN111138383B (en) | Alicyclic epoxy resin and preparation method thereof | |
| CN101564697B (en) | Reaction control phase transfer catalyst and application thereof in epoxidation reaction | |
| CN103044234A (en) | Method and catalyst for preparing adipic acid | |
| CN102050751A (en) | Synthesis as well as tail gas treatment technology and device of iminodiacetate | |
| CN115646488B (en) | Application of catalyst in preparation of 1, 5-pentanediamine through decarboxylation of L-lysine | |
| CN112521348B (en) | Method for synthesizing epoxy succinic acid by maleic anhydride catalytic epoxidation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |