CN1793112A - Process for producing oxime - Google Patents
Process for producing oxime Download PDFInfo
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- CN1793112A CN1793112A CN 200510112159 CN200510112159A CN1793112A CN 1793112 A CN1793112 A CN 1793112A CN 200510112159 CN200510112159 CN 200510112159 CN 200510112159 A CN200510112159 A CN 200510112159A CN 1793112 A CN1793112 A CN 1793112A
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- ketone
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- hydrogen peroxide
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Abstract
The invention relates to a method to produce oxime. Putting ketone, ammonia, hydrogen peroxide into the solvent that contains catalyst Ti-ECNU-1 molecular sieve, whisking and heating to take catalyzing compounding reaction, ketone would be gained. It has good catalyzing effect, no harmful to environment, easy post process, etc.
Description
Technical field
The present invention relates to a kind of method of producing oxime, specifically, relate to and a kind ofly be respectively catalyzer and reaction system, produce the method for oxime, belong to the organic chemistry synthesis technical field with HTS and ketone, ammonia, hydrogen peroxide.
Background technology
At present, oxime mainly is to utilize the reaction of hydroxylammonium salt and ketone to synthesize.This technology has two main drawbacks: the hydroxylammonium salt consumption that (1) is high; (2) generate a large amount of by-product inorganic salts simultaneously.This technology belongs to the unfriendly process of environment.
In order to address the above problem, people have developed the synthesis technique of eco-friendly oxime: be catalyzer with the HTS, make ketone oxamidinating produce the method for oxime with hydrogen peroxide and ammonia.U.S. Pat 4,745,221 mixtures that disclose with HTS or silicon-dioxide and HTS are the method for catalyzer synthesizing cyclohexane 1 ketoxime, but the selectivity of oxime is lower, has only 79.45%, hydrogen peroxide utilization ratio only 68.7%.U.S. Pat 6,462,235 to disclose a kind of be catalyzer with the titanium-silicon molecular sieve TS-1, under the condition of ammonium salt or substituted ammonium salt coexistence, with aldehydes or ketones, ammonia and hydrogen peroxide is the method for the liquid phase method production oxime of raw material, this method is very effective to macromole cyclic ketone, but needs to add the promotor ammonium salt or substituted ammonium salt could obtain high transformation efficiency and selectivity in the reaction, and this has increased the cost that reacts and the difficulty of product separation and purification.To sum up, the method for background technology can not obtain the selectivity of the transformation efficiency and the sufficiently high generation oxime of sufficiently high ketone.
Summary of the invention
The technical problem to be solved in the present invention is to release a kind of method of producing oxime, and this method has that catalytic performance is good, environmental friendliness, aftertreatment are easy, hydrogen peroxide utilization ratio height, ketone reactant transformation efficiency height, advantage that product oxime selectivity is high.
The inventor has invented a kind of new titanium-silicone molecular sieve (CN 1594087A), is designated the Ti-ECNU-1 molecular sieve, and its XRD spectra contains the spectral line shown in the table 1.Further discover, have excellent catalytic performance in the process of this molecular sieve to amidoxime production oxime in ketone, ammonia and hydrogen peroxide system, can be easy, be used in the green reaction process of hydrogen peroxide utilization ratio height, ketone reactant transformation efficiency height, amidoxime production oxime that product oxime selectivity is high in a kind of environmental friendliness, aftertreatment.
Table 1
| 2θ/° | d/A° | I/Io×100 |
| 3.24±0.20 6.46±0.15 7.22±0.14 7.90±0.15 9.64±0.20 12.00±0.29 12.92±0.27 14.04±0.29 14.42±0.29 14.74±0.27 16.14±0.30 19.34±0.38 20.18±0.37 20.58±0.41 21.70±0.46 21.94±0.39 22.64±0.45 23.12±0.40 23.72±0.38 25.08±0.35 26.14±0.37 26.94±0.40 27.28±0.41 | 27.25±1.50 13.67±0.30 12.23±0.20 11.18±0.20 9.17±0.18 7.37±0.16 6.85±0.14 6.30±0.12 6.14±0.12 6.00±0.10 5.49±0.10 4.59±0.09 4.40±0.08 4.31±0.08 4.09±0.08 4.05±0.07 3.92±0.07 3.84±0.06 3.75±0.06 3.55±0.05 3.41±0.05 3.31±0.05 3.27±0.05 | w-m m-vs vs m-vs s-vs w w-m w m w w w w w w w m w w w m w w |
| 28.78±0.48 | 3.10±0.05 | w |
*w：＜20；m：20～70；s：70～90；vs：90～100。
For solving above-mentioned technical problem, the present invention adopts following technical scheme: ketone reactant, ammonia, hydrogen peroxide are joined successively in the solvent that contains catalyzer Ti-ECNU-1 molecular sieve, carry out catalytic synthesis under stirring and the intensification, get the product oxime.
Now describe technical scheme of the present invention in detail.
A kind of production method of oxime is characterized in that, operation steps:
The first step is successively with catalyzer, solvent, ketone and ammonia are added in the reactor, stir, get reaction system, ketone: catalyzer: the weight ratio of solvent is 1: 0.03～0.15: 1～10, ketone: the mol ratio of ammonia is 1: 1～3, ammonia is gaseous ammonia or liquid ammonia, concentration is 1～100%, ketone is aliphatic ketone, alicyclic ketone, aromatic ketone or its mixture, catalyzer is Ti-ECNU-1 molecular sieve or the molectron that contains the Ti-ECNU-1 molecular sieve, solvent is water and methyl alcohol, ethanol, the trimethyl carbinol, n-propyl alcohol, the mixture of one of Virahol and sec-butyl alcohol, the content of water are 10～100%;
Under second step 30～150 ℃ and the 1～5atm, dripping concentration to the reaction system of the first step is 1～50% hydrogen peroxide, ketone: the mol ratio of hydrogen peroxide=1: 1～2, and the dropping time is 1～5 hour, dropwises the back and continues to react 0～3 hour;
The 3rd goes on foot routinely filter method isolates catalyzer, distillation procedure routinely then, separate product, oxime.
Technical scheme of the present invention is further characterized in that reaction process realizes by following mode, with behind ketone, solvent, the catalyzer adding reactor, adds ammonia and hydrogen peroxide continuously when intermittent mode carries out; Or, adding hydrogen peroxide continuously with behind ketone, solvent, the catalyzer adding reactor, ammonia then intermittently adds in batches; When carrying out, continuous mode adopts fixed bed or slurry bed reactor, will catalyzer, solvent making beating back adds ketone, ammonia and hydrogen peroxide continuously, and continuous separated product simultaneously.
Technical scheme of the present invention is further characterized in that in the first step, ketone: catalyzer: the weight ratio of solvent is 1: 0.05～0.10: 1～5, ketone: the mol ratio of ammonia is 1: 1～1.3, the concentration of ammonia is 20～30%, and ketone is aliphatic ketone or alicyclic ketone, and solvent is a water; Temperature of reaction and pressure are respectively 60～90 ℃ and 1～2atm, ketone in second step: the mol ratio of hydrogen peroxide is 1: 1～1.3, and concentration of hydrogen peroxide is 20～40%, and the dropping time is 1～2 hour, after dropwising, continues reaction 0～1 hour.
Technical scheme of the present invention is further characterized in that catalyzer is the molectron of Ti-ECNU-1 molecular sieve and silicon-dioxide.
Technical scheme of the present invention is further characterized in that catalyzer is the molectron of Ti-ECNU-1 molecular sieve and other titaniferous molecular sieves.
Technical scheme of the present invention is further characterized in that catalyzer is the molectron of Ti-ECNU-1 molecular sieve and other titaniferous molecular sieves and silicon-dioxide.
Compared with prior art, the present invention has following remarkable advantage:
1, adopting the novel texture molecular sieve (Ti-ECNU-1 molecular sieve) with excellent catalytic activity is catalyzer;
2, ketone reactant transformation efficiency height, generation oxime selectivity height, hydrogen peroxide utilization ratio height;
3, be solvent with water, last handling process is simple;
4, reaction process environmental friendliness.
Embodiment
All embodiment all operate by the operation steps of technique scheme.
Among the embodiment, the Ti-ECNU-1 molecular sieve prepares according to patent documentation (CN 1594087A) disclosed method; Gas-chromatography (Tianjin, island GC 14B, DB-1 capillary column 30m * 0.25mm * 0.25 μ m) is adopted in the analysis of reactant and product, is interior mark with toluene, and the method for temperature programming is come quantitatively.
Embodiment 1
Ketone is alicyclic ketone: pimelinketone
The first step ketone: catalyzer: the weight ratio of solvent is 1: 0.05: 5, ketone: the mol ratio of ammonia is 1: 1.15, and catalyzer is the Ti-ECNU-1 molecular sieve, and ammonia is liquid ammonia, and concentration is 25%, and solvent is a water;
The second step temperature of reaction and pressure are respectively 73 ℃ and 1atm, ketone: the mol ratio of hydrogen peroxide is 1: 1.06, and the concentration of hydrogen peroxide is 30%, and the dropping time is 1 hour, dropwises the back and continues reaction 0.5 hour.
Analytical results shows that the ketone transformation efficiency is 98.5%, and the oxime selectivity is 99.8%.
Embodiment 2
Except for the following differences, all the other are all same with embodiment 1:
In the first step, ketone: catalyzer: the weight ratio of solvent is 1: 0.05: 10; In second step, ketone: the mol ratio of hydrogen peroxide is 1: 1.
Analytical results shows that the ketone transformation efficiency is 97.3%, and the oxime selectivity is 99.5%.
Embodiment 3
Except for the following differences, all the other are all same with embodiment 1:
Ketone is alicyclic ketone: cyclooctanone
In the first step, ketone: catalyzer: the weight ratio of solvent is 1: 0.1: 10, ketone: the mol ratio of ammonia is 1: 1.3; In second step, temperature of reaction is 80 ℃, ketone: the mol ratio of hydrogen peroxide is 1: 1.3, and the dropping time is 2 hours, dropwises the back and continues reaction 1 hour.
Analytical results shows that the ketone transformation efficiency is 97.8%, and the ketoxime selectivity is 99.3%.
Embodiment 4
Except for the following differences, all the other are all same with embodiment 1:
In the first step, ketone: catalyzer: the weight ratio of solvent is 1: 0.1: 2, and catalyzer is the composition of Ti-ECNU-1 molecular sieve and silicon-dioxide, and the weight ratio of Ti-ECNU-1 molecular sieve and silicon-dioxide is 7: 3.
Analytical results shows that the ketone transformation efficiency is 96.7%, and the oxime selectivity is 99.8%.
Embodiment 5
Except for the following differences, all the other are all same with embodiment 4:
The TS-1 molecular sieve is synthetic according to embodiment 1 disclosed method of patent documentation (CN 1488438).
In the first step, ketone: catalyzer: the weight ratio of solvent is 1: 0.1: 1, and catalyzer is the composition of Ti-ECNU-1 molecular sieve and TS-1 molecular sieve, silicon-dioxide, and the weight ratio of Ti-ECNU-1 molecular sieve, TS-1 molecular sieve and silicon-dioxide is 6: 1: 3.
Analytical results shows that the ketone transformation efficiency is 96.2%, and the oxime selectivity is 99.5%.
Embodiment 6
Except for the following differences, all the other are all same with embodiment 1:
In the first step, do not add earlier ammonia; In second step, ammonia and hydrogen peroxide are slowly dripped respectively, the dropping time is 1 hour.
Analytical results shows that the ketone transformation efficiency is 98.0%, and the oxime selectivity is 99.5%.
Embodiment 7
Except for the following differences, all the other are all same with embodiment 1:
In the first step, do not add earlier ketone and ammonia; In second step, ketone, ammonia and hydrogen peroxide are slowly dripped respectively, the dropping time is 1 hour.
Analytical results shows that the ketone transformation efficiency is 96.5%, and the oxime selectivity is 99.3%.
Embodiment 8
Except for the following differences, all the other are all same with embodiment 1:
Ketone is aliphatic ketone: butanone
The first step ketone: catalyzer: the weight ratio of solvent is 1: 0.1: 5, ketone: the mol ratio of ammonia is 1: 1.3;
The second step temperature of reaction is 70 ℃, and ketone: the mol ratio of hydrogen peroxide is 1: 1.2, and the dropping time is 1.5 hours.
Analytical results shows that the ketone transformation efficiency is 98.5%, and the oxime selectivity is 99.5%.
Claims (6)
1, a kind of production method of oxime is characterized in that, operation steps:
The first step is successively with catalyzer, solvent, ketone and ammonia are added in the reactor, stir, get reaction system, ketone: catalyzer: the weight ratio of solvent is 1: 0.03～0.15: 1～10, ketone: the mol ratio of ammonia is 1: 1～3, ammonia is gaseous ammonia or liquid ammonia, concentration is 1～100%, ketone is aliphatic ketone, alicyclic ketone, aromatic ketone or its mixture, catalyzer is Ti-ECNU-1 molecular sieve or the molectron that contains the Ti-ECNU-1 molecular sieve, solvent is water and methyl alcohol, ethanol, the trimethyl carbinol, n-propyl alcohol, the mixture of one of Virahol and sec-butyl alcohol, the content of water are 10～100%;
Under second step 30～150 ℃ and the 1～5atm, dripping concentration to the reaction system of the first step is 1～50% hydrogen peroxide, ketone: the mol ratio of hydrogen peroxide=1: 1～2, and the dropping time is 1～5 hour, dropwises the back and continues to react 0～3 hour;
The 3rd goes on foot routinely filter method isolates catalyzer, distillation procedure routinely then, separate product, oxime.
2, the production method of oxime according to claim 1 is characterized in that, reaction process realizes by following mode, with behind ketone, solvent, the catalyzer adding reactor, adds ammonia and hydrogen peroxide continuously when intermittent mode carries out; Or, adding hydrogen peroxide continuously with behind ketone, solvent, the catalyzer adding reactor, ammonia then intermittently adds in batches; When carrying out, continuous mode adopts fixed bed or slurry bed reactor, will catalyzer, solvent making beating back adds ketone, ammonia and hydrogen peroxide continuously, and continuous separated product simultaneously.
3, the production method of oxime according to claim 1, it is characterized in that, in the first step, ketone: catalyzer: the weight ratio of solvent is 1: 0.05～0.10: 1～5, ketone: the mol ratio of ammonia is 1: 1～1.3, the concentration of ammonia is 20～30%, and ketone is aliphatic ketone or alicyclic ketone, and solvent is a water; Temperature of reaction and pressure are respectively 60～90 ℃ and 1～2atm, ketone in second step: the mol ratio of hydrogen peroxide is 1: 1～1.3, and concentration of hydrogen peroxide is 20～40%, and the dropping time is 1～2 hour, after dropwising, continues reaction 0～1 hour.
According to the production method of claim 1 or 3 described oximes, it is characterized in that 4, catalyzer is the molectron of Ti-ECNU-1 molecular sieve and silicon-dioxide.
According to the production method of claim 1 or 3 described oximes, it is characterized in that 5, catalyzer is the molectron of Ti-ECNU-1 molecular sieve and other titaniferous molecular sieves.
According to the production method of claim 1 or 3 described oximes, it is characterized in that 6, catalyzer is the molectron of Ti-ECNU-1 molecular sieve and other titaniferous molecular sieves and silicon-dioxide.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130203A (en) * | 2011-11-29 | 2013-06-05 | 岳阳昌德化工实业有限公司 | Preparation method of nitrous oxide |
| CN103497123A (en) * | 2013-09-13 | 2014-01-08 | 华东师范大学 | Preparation method for ketoxime |
| CN112479925A (en) * | 2020-11-30 | 2021-03-12 | 中国天辰工程有限公司 | Large naphthenone ammoximation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106694027B (en) * | 2016-12-30 | 2019-02-01 | 华东师范大学 | A kind of amine oxidation prepares the preparation and its application of the transition-metal catalyst of oxime |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT1214622B (en) * | 1985-07-10 | 1990-01-18 | Montedipe Spa | CATALYTIC PROCESS FOR THE PRODUCTION OF CYCLOHEXANONE. |
| DE10047435A1 (en) * | 2000-09-26 | 2002-04-11 | Degussa | Process for the production of oximes |
| DE10103581A1 (en) * | 2001-01-26 | 2002-08-01 | Degussa | Process for the preparation of oximes co-catalyzed by ammonium salts or substituted ammonium salts |
| CN1246301C (en) * | 2002-05-31 | 2006-03-22 | 中国石油化工股份有限公司 | Oxaamidination method of oxo-compound |
| CN1280193C (en) * | 2004-06-24 | 2006-10-18 | 华东师范大学 | Titanium silicon molecular sieve and synthesis method thereof |
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2005
- 2005-12-28 CN CNB2005101121593A patent/CN1328248C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130203A (en) * | 2011-11-29 | 2013-06-05 | 岳阳昌德化工实业有限公司 | Preparation method of nitrous oxide |
| CN103130203B (en) * | 2011-11-29 | 2014-08-20 | 岳阳昌德化工实业有限公司 | Preparation method of nitrous oxide |
| CN103497123A (en) * | 2013-09-13 | 2014-01-08 | 华东师范大学 | Preparation method for ketoxime |
| CN112479925A (en) * | 2020-11-30 | 2021-03-12 | 中国天辰工程有限公司 | Large naphthenone ammoximation method |
| WO2022110930A1 (en) * | 2020-11-30 | 2022-06-02 | 中国天辰工程有限公司 | Method for ammoximation of macrocycloalkanone |
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