CN1680254A - Oxosynthesis of azelaic acid and nonoic acid with mixed ozone solvent - Google Patents
Oxosynthesis of azelaic acid and nonoic acid with mixed ozone solvent Download PDFInfo
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Abstract
A synthesis of anchoic acid and nonanoic acid by mixed solvent ozone oxidation is carried out by agitating material oleic acid, water, nonanoic acid with acetic acid, inducing O3, oxidizing reacting, heating, adding catalyst, inducing oxygen, oxidizing and cracking reacting, laying aside, freezing and crystallizing water phase from first separating, extracting and leaking, separating out anchoic acid, extracting oil phase by boiled water, freezing and crystallizing, extracting and leaking, obtaining anchoic acid, washing, drying, and obtaining product. Its advantages include high productivity, moderate reaction, simple separation and purification, and no environmental pollution.
Description
Technical field
The present invention relates to a kind of method of using mixed solvent through synthetic nonane diacid of ozone oxidation-catalytic oxidative cracking method and n-nonanoic acid.
Background technology
Nonane diacid (Azelaic acid) be lepargylic acid again, is white plates or Powdered crystal.Molecular formula C
9H
16O
4, molecular weight 188.22, proportion 1.0291 (4 ℃), 1.225 (25 ℃), 106.5 ℃ of fusing points, 286.5 ℃ of boiling points (13.33kPa), specific refractory power 1.4303 (111 ℃).
Nonane diacid is a kind of important organic synthesis intermediate, can be used to products such as synthetic dioctyl azelate (DOZ) softening agent, synthetic perfume, lubricating oil and polymeric amide.Dioctyl azelate, nonane diacid didecyl ester, the two tridecane esters of nonane diacid all are good lubricants.Nonane diacid also is used for the production of nylon 69 and nylon 9.Nonane diacid makes amino-nonanoic acid through amination, hydrogenation, and the amino-nonanoic acid direct condensation can be produced nylon 9.Nonane diacid can improve the snappiness of unsaturated polyester, can be used as the properties-correcting agent of terephthalic acid-polyglycol ester.In addition, other of nonane diacid used and also comprised dielectric liquid, emulsion splitter, mothproofing agent, urethane methyl ester foam, hydraulic efficiency oil, high molten coating, tackiness agent and water soluble resin etc.The discovered in recent years nonane diacid has superior electrical property, is used for manufacturing (fine chemistry industry, 1994,11 (1): 56-58) of electrical condenser.Nonane diacid also is used to dermopathic control.The too much disease of acne, rosacea, chloasma and cutaneous pigmentation (Chinese Hospitals pharmaceutical journal, 2002,22 (4): 242-243) have been used for the treatment of clinically
At present, the production method of nonane diacid mainly is the oxidation style of unsaturated fatty acidss such as oleic acid, and used oxygenant has potassium permanganate, nitric acid, chromic acid, hydrogen peroxide, hypochlorite, ozone etc.But the selectivity of nitric acid oxidation method reaction is not high, and serious to equipment corrosion.With potassium permanganate is the thickened oil acid system of oxygenant, and yield is low, consumes a large amount of sulfuric acid and potassium permanganate again, cost height not only, and also seriously polluted.Although can improve the technology of potassium permanganate process with emulsion process, the consumption of potassium permanganate is still very big, and aftertreatment is very numerous and diverse, and is inadvisable economically., cost an arm and a leg as oxygenant with chromic acid, and make the oxidation products degradation easily, produce the low carbon chain diprotic acid, resulting product purity is not high.This shows in many prior arts, some method contaminate environment, the method steps that has is more numerous and diverse, and the method that has need support noble metal catalyst, and needs long-time logical oxygen, length consuming time, cost height.Some method needs high pressure, the implementation condition harshness, and the cost costliness is difficult to carry out large-scale production.And the ozone oxidation method is a kind of very good production method, and it has, and raw material is cheap and easy to get, energy consumption is low, environmental pollution is little, productive rate height, good product quality, advantages such as easy scale operation.
Domestic money has carried out the research of oleic acid through the synthetic nonane diacid of ozone oxidation method first for the group waits, they adopt oleic acid: the weight ratio of water is that 1: 1 system is reacted, and two kinds of catalyzer (unexposed) in the dioxygen oxidation decomposition step, have been adopted, the maximum output that obtains nonane diacid under laboratory scale is 46.5% (fine chemistry industry, 1994,11 (1): 56-58).
Big strange the grade with Oleum Gossypii semen soap stock lipid acid of king is raw material, makees solvent with acetic acid, adopts the ozone oxidation method to make nonane diacid, and they have mainly explored and have respectively gone on foot the influence of temperature of reaction to productive rate, and not to the exploration of solvent system and catalyzer.Fact proved that temperature is not the most critical factor that influences productive rate.(research and development of natural products, 1997,9 (2): 39-42).
The Emery Industries Inc (U.S. Pat 2,813,113) of the U.S. at first produces n-nonanoic acid and nonane diacid as oxygenant from oleic acid with ozone on industrial production.Their production method is roughly as follows: the mixture that at first makes oleic acid and n-nonanoic acid generates oleic ozonization product by the ozonization device; Then the ozonization product is heated to 80 ℃-100 ℃ reactions 1.5-3.0 hour, logical oxygen carries out oxicracking.Distill above oxidation mixture and obtain n-nonanoic acid, remaining resistates is used the water hot extraction, obtains product of nonane diacid with evaporation or crystalline method again.
On the research basis of U.S. Emery, the descendant is in choice of Solvent, selection of catalysts, the contact method of material, reactor design, aspects such as the separation and purification of product carried out improving (referring to patent US 2813113, GB757455, GB841653, GB810571, US2450858, US 3979450, US6362368B1, US 6512131, and US 20030032825), and the report of relevant mechanism research is arranged in recent years, and (referring to document: U.S. oil chemistry man can will JAOCS, 1995,72 (6), 745-740, the meeting will JAOCS of U.S. oil chemistry man, 1992,69 (2), 159-165), yet these improve the technology of still continuing to use traditional ozonization: carry out ozonization in 25-46 ℃ of temperature range, then temperature is raised to 75-120 ℃ of logical oxygen and carries out cracking.Also relevant for the report of ozonization product catalytic oxidative cracking, mainly use the catalyzer (referring to patent US 5399749, US 5420316) of molecular sieve and molecular sieve supported manganese salt in recent years.Simultaneously, what nearly all adopt in these documents is single homogeneous solvent system, and productive rate all is no more than 70%.
Summary of the invention
The object of the invention is, a kind of method of using synthetic nonane diacid of mixed solvent ozone oxidation and n-nonanoic acid is provided, and this method is that violent stirring is even with raw material oleic acid, water, n-nonanoic acid and vinegar stock, logical O
3Carry out ozonization, heating, add catalyzer, change logical oxygen and carry out oxidative cracking reaction, leave standstill, after the water freezing and crystallizing that separation first obtains is taken out leakage, isolate nonane diacid, oil phase is with boiling water extraction back freezing and crystallizing, also obtains nonane diacid after taking out leakage, and the nonane diacid head product that obtains for twice can be obtained product after washing, oven dry.This method makes oleic acid be tending towards gentle through the reaction of the synthetic nonane diacid of ozone oxidation method, productive rate greatly improves, and separation and purification of products is simple, avoided homogeneity not fully simultaneously with water as solvent, solved with acetic acid do solvent to equipment corrosion the critical problem that large-scale industrial production was faced such as serious and big for environment pollution.
A kind of method of synthetic nonane diacid of mixed solvent ozone oxidation and n-nonanoic acid of using of the present invention follows these steps to carry out:
A, raw material oleic acid, water, n-nonanoic acid and vinegar stock are added in the reactor, wherein volume feed is an oleic acid: water: n-nonanoic acid: acetic acid=50: 30-350: 30-250: 20-200, and violent stirring mixes, and controlled temperature is at 0-40 ℃, logical O
3Carry out ozonization, the concentration of the ozone 1%-7% that is weight percentage wherein, the air-flow velocity of ozonize is 0.1-0.4m
3/ h, the ozonization time is 1.0-3.0 hour;
B, be heated to 80-130 ℃ then, add catalyst weight per-cent 0.005-0.2%, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.1-0.4m
3/ h, the reaction times is 1.5-3.0 hour;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, and oil phase extracts the back freezing and crystallizing 5-7 time with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase underpressure distillation that has extracted, obtaining the n-nonanoic acid productive rate is 60%-75%, can make solvent again;
E, the nonane diacid head product that obtains for twice can be obtained product after washing, oven dry, productive rate is 70%-87%, fusing point 106-108 ℃.
Catalyzer adopts single the kind or several mixtures in the manganese salt, molysite, cobalt salt, wolframic acid of transition metal: specifically comprise any one the two several mixture in manganese acetate, manganous sulfate, potassium permanganate, iron protochloride, ferrous sulfate, iron(ic) chloride, ferric sulfate, cobalt chloride, cobalt oxide and the wolframic acid.
Mixed solvent reaction system of the present invention has almost absorbed the advantage of various single solvent systems, and has avoided weak point, thereby makes operation obtain simplifying greatly, and productive rate has obtained improving greatly.Such as: if adopt 50ml oleic acid to make raw material.Because the solubleness of ozone in water is bigger, the transformation period is longer, so we adopt 250ml water to make main solvent; In order to prevent in the oil phase superheating phenomenon to occur in oleic excessive concentration and the reaction, we add the 70ml n-nonanoic acid with the dilution oil phase, and n-nonanoic acid can reduce oil phase impurity and enters water in the extracting and separating of back simultaneously, thereby improves the quality of product; Need to add 50ml acetic acid with adjusting pH value, and participate in intermediate reaction, the stopping reaction intermediate state, acetic acid both was soluble in the aqueous phase simultaneously, was dissolved in oil phase again, had promoted the phase exchange interaction greatly, and reaction is carried out thoroughly smoothly.This multi-component hybrid reaction system makes entire reaction course become gentle and stablizes.Reaction system has very powerful anti-external interference ability, in above-mentioned system, any one component can not cause the bigger variation of productive rate than great fluctuation process.Moreover, reaction system is so complicated but can not bring any trouble to product separation.After reaction finished, system left standstill, and oil phase and water just separate, obtain first water take out after freezing Lou isolate nonane diacid after, can be used as solvent again and reuse.Oil phase also obtain nonane diacid behind the suction filtration, and isolated extraction water can extract usefulness next time with 5-7 back of 500-1000ml boiling water extraction freezing and crystallizing.The oil phase that has extracted is at 28Pa, 135 ℃ of left and right sides underpressure distillation, and the recovery n-nonanoic acid that obtains can return and make solvent again.So in the whole process, all components have all obtained repeatedly and fully utilizing, obtain the simple water of productivity ratio of nonane diacid and n-nonanoic acid or make the productive rate of solvent with acetic acid or n-nonanoic acid merely all high, solved homogeneity not fully simultaneously with water as solvent; It is serious and big for environment pollution etc. big to equipment corrosion to make solvent with acetic acid; And make critical problems that large-scale industrial production was faced such as solvent viscosity is bigger with n-nonanoic acid.The result just obtains nonane diacid and byproduct n-nonanoic acid with high yield.
The present invention has developed the new catalyst that a series of oxygen ozone decomposition reaction product prepare nonane diacid.In theory, all transition metal ions can be made the catalyzer that the second step dioxygen oxidation decomposes, but the present invention has mainly developed single the kind or several mixture as catalyst in manganese salt, molysite, cobalt salt, the wolframic acid: specifically comprise one or more the mixture in manganese acetate, manganous sulfate, potassium permanganate, iron protochloride, ferrous sulfate, iron(ic) chloride, ferric sulfate, cobalt chloride, cobalt oxide and the wolframic acid.Catalyst consumption is 0.005-0.2% (wt%).Wherein with manganese acetate and wolframic acid, and the mixed catalyst of manganese acetate and cobalt chloride is preferable combination.
Embodiment
The present invention will be further described below by embodiment.
Embodiment 1
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 250ml water, 70ml n-nonanoic acid, and the mixture of 50ml acetic acid adds in the reactor, violent stirring mixes, and controlled temperature is at 5 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.25m
3/ h carries out ozonization, 2.0 hours time;
B, be heated to 80 ℃ then, add catalyst acetic acid manganese 0.40g and cobalt chloride 0.10g, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.2m
3/ h, the reaction times is 1.5 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 5 times with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase that extracted are at 28Pa, and 135 ℃ of underpressure distillation obtain n-nonanoic acid, and productive rate is 73%, and this n-nonanoic acid can reclaim, and also can return and make solvent again;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 17.6g, productive rate is 86.3% (in oleic acid), fusing point 106-108 ℃.
Embodiment 2
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 30ml water, 30ml n-nonanoic acid, and the mixture of 20ml acetic acid adds in the reactor, violent stirring mixes, and controlled temperature is at 0 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.1m
3/ h carries out ozonization, 3.0 hours time;
B, be heated to 90 ℃ then, add catalyst acetic acid manganese 0.40g and cobalt chloride 0.10g, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.2m
3/ h, the reaction times is 2.0 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 6 times with 500ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase that extracted are at 28Pa, and 135 ℃ of underpressure distillation obtain n-nonanoic acid, and productive rate is 62%, and this n-nonanoic acid can reclaim, and also can return and make solvent again;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 13.5g, productive rate is 66.2% (in oleic acid), fusing point 106-108 ℃.
Embodiment 3
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 350ml water, 250ml n-nonanoic acid, and the mixture of 200ml acetic acid adds in the reactor, violent stirring mixes, and controlled temperature is at 10 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.25m
3/ h carries out ozonization, 2.0 hours time;
B, be heated to 95 ℃ then, add catalyst acetic acid manganese 0.40g and cobalt chloride 0.10g, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.20m
3/ h, the reaction times is 2.0 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 5 times with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase that extracted are at 28Pa, and 135 ℃ of underpressure distillation obtain n-nonanoic acid, and productive rate is 65%, and this n-nonanoic acid can reclaim, and also can return and make solvent again;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 14.2g, productive rate is 69.6% (in oleic acid), fusing point 106-108 ℃.
Embodiment 4
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 250ml water, 70ml, and the mixture of 30ml acetic acid adds in the reactor, violent stirring mixes, controlled temperature is at 25 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.35m
3/ h carries out ozonization, 2.0 hours time;
B, be heated to 95 ℃ then, add catalyst acetic acid manganese 0.40g and cobalt chloride 0.10g, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.3m
3/ h, the reaction times is 1.5 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 5 times with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase that extracted are at 28Pa, and 135 ℃ of underpressure distillation obtain n-nonanoic acid, and productive rate is 70%, and this n-nonanoic acid can reclaim, and also can return and make solvent again;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 17.0g, productive rate is 83.3% (in oleic acid), fusing point 106-108 ℃, obtains the by product n-nonanoic acid simultaneously.
Embodiment 5
A, with 200ml chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), the mixture of 250ml n-nonanoic acid, 150ml acetic acid and 500ml water adds in the reactor, violent stirring mixes, controlled temperature is at 30 ℃, feeds be weight percentage 7% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.40m
3/ h carries out ozonization, 3.0 hours time;
B, be heated to 100 ℃ then, add catalyst acetic acid manganese 1.00g, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.30m
3/ h, the reaction times is 3.0 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, and oil phase repeatedly extracts the back freezing and crystallizing with 2000ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase that extracted are at 28Pa, and 135 ℃ of underpressure distillation obtain n-nonanoic acid, and productive rate is 75%, and this n-nonanoic acid can reclaim, and also can return and make solvent again;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 204g, productive rate is 77.6% (in oleic acid), fusing point 106-108 ℃.
Embodiment 6
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 250ml water, 70ml n-nonanoic acid, and the mixture of 50ml acetic acid adds in the reactor, violent stirring mixes, and controlled temperature is at 35 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.25m
3/ h carries out ozonization, 2.0 hours time;
B, be heated to 110 ℃ then, add catalyst sulfuric acid iron 0.40g and wolframic acid 0.10g, 0.10g changes logical oxygen and carries out oxidative cracking reaction, and the logical oxygen gas flow rate of oxicracking is 0.2m
3/ h, the reaction times is 1.5 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 5 times with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase that extracted are at 28Pa, and 135 ℃ of underpressure distillation obtain n-nonanoic acid, and productive rate is 65%, and this n-nonanoic acid can reclaim, and also can return and make solvent again;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 14.8g, productive rate is 72.3% (in oleic acid), fusing point 106-108 ℃.
Embodiment 7
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 250ml water, 70ml n-nonanoic acid, and the mixture of 50ml acetic acid adds in the reactor, violent stirring mixes, and controlled temperature is at 40 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.25m
3/ h carries out ozonization, 2.0 hours time;
B, be heated to 115 ℃ then, add catalyzer potassium permanganate 0.50g, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.2m
3/ h, the reaction times is 1.5 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 5 times with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase that extracted are at 28Pa, and 135 ℃ of underpressure distillation obtain n-nonanoic acid, and productive rate is 69%, and this n-nonanoic acid can reclaim, and also can return and make solvent again;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 15.5g, productive rate is 76.0% (in oleic acid), fusing point 106-108 ℃.
Embodiment 8
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 250ml water, 70ml n-nonanoic acid, and the mixture of 50ml acetic acid adds in the reactor, violent stirring mixes, and controlled temperature is at 30 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.25m
3/ h carries out ozonization, 2.0 hours time;
B, be heated to 120 ℃ then, add the ferrous 0.30g of catalyst sulfuric acid, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.2m
3/ h, the reaction times is 1.5 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 5 times with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase that extracted are at 28Pa, and 135 ℃ of underpressure distillation obtain n-nonanoic acid, and productive rate is 75%, and this n-nonanoic acid can reclaim, and also can return and make solvent again;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 16.4g, productive rate is 80.4% (in oleic acid), fusing point 106-108 ℃.
Embodiment 9
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 250ml water, 70ml n-nonanoic acid, and the mixture of 50ml acetic acid adds in the reactor, violent stirring mixes, and controlled temperature is at 40 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.25m
3/ h carries out ozonization, 2.0 hours time;
B, be heated to 130 ℃ then, add ferrous 0.30g of catalyst sulfuric acid and cobalt chloride 0.20g, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.2m
3/ h, the reaction times is 1.5 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 5 times with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 11.3g, productive rate is 55.2% (in oleic acid), fusing point 106-108 ℃.
Embodiment 10
A, with 50.0ml (44.6g) chemical pure oleic acid (oleic acid quality percentage composition is 74.1%), 250ml water, 70ml n-nonanoic acid, and the mixture of 50ml acetic acid adds in the reactor, violent stirring mixes, and controlled temperature is at 40 ℃, feeds be weight percentage 4% O of concentration
3/ O
2Gas, the air-flow velocity of ozonize are 0.25m
3/ h carries out ozonization, 2.0 hours time;
B, be heated to 110 ℃ then, add catalyzer cobalt chloride 0.20g, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.2m
3/ h, the reaction times is 1.5 hours;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, freezing and crystallizing after oil phase extracts 5 times with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, weight is 15.0g, productive rate is 73.5% (in oleic acid), fusing point 106-108 ℃.
Claims (2)
1, a kind of method of using synthetic nonane diacid of mixed solvent ozone oxidation and n-nonanoic acid is characterized in that following these steps to carrying out:
A, raw material oleic acid, water, n-nonanoic acid and vinegar stock are added in the reactor, wherein volume feed is an oleic acid: water: n-nonanoic acid: acetic acid=50: 30-350: 30-250: 20-200, violent stirring mixes, controlled temperature is at 0-40 ℃, logical O3 carries out ozonization, the concentration of the ozone 1%-7% that is weight percentage wherein, the air-flow velocity of ozonize is 0.1-0.4m
3/ h, the ozonization time is 1.0-3.0 hour;
B, be heated to 80-130 ℃ then, add the catalyzer of weight percent 0.005-0.2%, change logical oxygen and carry out oxidative cracking reaction, the logical oxygen gas flow rate of oxicracking is 0.1-0.4m
3/ h, the reaction times is 1.5-3.0 hour;
C, after reaction finishes, system is left standstill, after separating the water freezing and crystallizing obtain first and taking out leakage, isolate nonane diacid, water returns and makes solvent usefulness again, and oil phase extracts the back freezing and crystallizing 5-7 time with 800ml boiling water, also obtain nonane diacid after taking out leakage, water is used for again extracting next time;
D, the oil phase underpressure distillation that has extracted, obtaining the n-nonanoic acid productive rate is 60%-75%, can make solvent again, also can make with extra care the product n-nonanoic acid;
E, with the nonane diacid head product that obtains for twice after washing, oven dry finished product, productive rate is 70%-87%, fusing point 106-108 ℃.
2, a kind of method of using synthetic nonane diacid of mixed solvent ozone oxidation and n-nonanoic acid according to claim 1 is characterized in that: catalyzer adopts single the kind or several mixtures in the manganese salt, molysite, cobalt salt, wolframic acid of transition metal: the mixture that specifically comprises any one or two kinds in manganese acetate, manganous sulfate, potassium permanganate, iron protochloride, ferrous sulfate, iron(ic) chloride, ferric sulfate, cobalt chloride, cobalt oxide and the wolframic acid.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102344358A (en) * | 2011-07-25 | 2012-02-08 | 中国科学院成都生物研究所 | Method for preparing C2-C11 organic acid by taking tung oil as raw material |
| CN116836051A (en) * | 2023-07-04 | 2023-10-03 | 青岛金牛油脂科技有限公司 | Safe and environment-friendly azelaic acid production method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244998B (en) * | 2008-03-21 | 2011-09-14 | 四川西普化工股份有限公司 | Method for producing nonandioic acid, pelargonic acid by ozonization-oxidative decomposition of oleic acid |
| CN102085346B (en) * | 2011-01-02 | 2012-02-15 | 刘晓云 | Traditional Chinese medicine composition for treating chronic obstructive pulmonary disease |
| CN102670930B (en) * | 2012-05-24 | 2013-11-13 | 鞠颖 | Chinese decoction for treating allelgic asthma |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566064A (en) * | 2003-06-27 | 2005-01-19 | 中国科学院兰州化学物理研究所 | Process for preparing azelaic acid by oleic acid phase transfer catalytic oxidation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344358A (en) * | 2011-07-25 | 2012-02-08 | 中国科学院成都生物研究所 | Method for preparing C2-C11 organic acid by taking tung oil as raw material |
| CN102344358B (en) * | 2011-07-25 | 2015-07-15 | 中国科学院成都生物研究所 | Method for preparing C2-C11 organic acid by taking tung oil as raw material |
| CN116836051A (en) * | 2023-07-04 | 2023-10-03 | 青岛金牛油脂科技有限公司 | Safe and environment-friendly azelaic acid production method |
| CN116836051B (en) * | 2023-07-04 | 2024-02-09 | 青岛金牛油脂科技有限公司 | Safe and environment-friendly azelaic acid production method |
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| CN1312103C (en) | 2007-04-25 |
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