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CN102199114A - Method for preparing raw material for producing dicumyl peroxide - Google Patents

Method for preparing raw material for producing dicumyl peroxide Download PDF

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Publication number
CN102199114A
CN102199114A CN2011100596726A CN201110059672A CN102199114A CN 102199114 A CN102199114 A CN 102199114A CN 2011100596726 A CN2011100596726 A CN 2011100596726A CN 201110059672 A CN201110059672 A CN 201110059672A CN 102199114 A CN102199114 A CN 102199114A
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cumene
ionic liquid
dcp
mixture
isopropyl benzene
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CN102199114B (en
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黄崇品
吕小林
陈标华
张傑
徐帅
李红坤
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Beijing University of Chemical Technology
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Beijing University of Chemical Technology
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Abstract

本发明公开了一种用于生产过氧化二异丙苯的原料的制备方法,属于异丙苯催化氧化技术领域。本发明采用碱性离子液体和碳酸钠的混合物作为催化剂,以空气作为氧源,将异丙苯经催化氧化制成过氧化氢异丙苯和二甲基苄醇接近1∶1比例的混合物。将本发明所得混合物直接缩合即可生成DCP,省去了DCP原料生产过程中的还原步骤,降低了DCP生产成本。The invention discloses a method for preparing raw materials for producing dicumyl peroxide, and belongs to the technical field of cumene catalytic oxidation. The invention adopts the mixture of alkaline ionic liquid and sodium carbonate as a catalyst, and uses air as an oxygen source to catalyze and oxidize cumene to prepare a mixture of cumene hydroperoxide and dimethyl benzyl alcohol in a ratio close to 1:1. The DCP can be produced by directly condensing the mixture obtained in the present invention, which saves the reduction step in the production process of the DCP raw material and reduces the production cost of the DCP.

Description

A kind of preparation method who is used to produce the raw material of dicumyl peroxide
Technical field
The present invention relates to a kind of preparation method who is used to produce the raw material of dicumyl peroxide, belong to isopropyl benzene catalyzed oxidation technical field.
Background technology
Dicumyl peroxide (DCP) is important novel organo-peroxide auxiliary agent, is optimum good initiator, vulcanizing agent, linking agents of macromolecular materials such as natural gum, synthetical glue, polyvinyl resin, and purposes is widely arranged.
The production process of DCP, it generally is raw material with the isopropyl benzene, yellow soda ash or sodium hydroxide are catalyzer, under the oxidation of air or oxygen, cumene oxidation is become hydrogen phosphide cumene, again hydrogen phosphide cumene is reduced into dimethyl benzyl alcohol with S-WAT, dimethyl benzyl alcohol and hydrogen phosphide cumene are condensed into DCP in 1: 1 ratio under the catalysis of acid.Reaction process is as shown in Figure 1:
At present, about patent and the bibliographical information of DCP fewer, relevant patent also majority concentrates on cumene oxidation decomposition production phenol field, main purpose all is on the selectivity for transformation efficiency that improves isopropyl benzene and hydrogen phosphide cumene, as U.S. Pat 6291718, all mentioned among the US6476276 in the oxidation of alkylbenzene and to have added a kind of special compound that can Mulberry Extract.In the mixture of 144g isopropyl benzene and 36g isopropyl benzene hydroperoxide, add 2,2,6 of 18mg, 6-tetramethyl piperidine oxide compound, all these joins 0.05% the Na of 90g 2CO 3In the aqueous solution, react after 3 hours, the selectivity of isopropyl benzene hydroperoxide is 91mol%.As mentioning with alkali ionic liquid in Chinese patent 200810102379.1 is catalyst oxidation isopropyl benzene and diisopropylbenzene(DIPB), can improve the transformation efficiency of diisopropylbenzene(DIPB) significantly and to the selectivity of hydrogen peroxide product.
Summary of the invention
Purpose of the present invention is reduced into the link of benzylalcohol with hydrogen phosphide cumene in the DCP production process, and a kind of preparation method who is used to produce the raw material of DCP is provided, and the direct condensation of gained mixture of the present invention can be generated DCP.
For achieving the above object, technical scheme of the present invention: the mixture that adopts alkali ionic liquid and yellow soda ash as oxygen source, is made isopropyl benzene the mixture of hydrogen phosphide cumene and dimethyl benzyl alcohol with air as catalyzer through catalyzed oxidation.
Alkali ionic liquid of the present invention is imidazole type, pyridine type, quaternary ammonium or quaternary alkylphosphonium salt type alkali ionic liquid, and concrete structure is as follows:
X-=OH in the following formula -, R, R 1, R 2, R 3, R 4, R ' is C 1-C 18Alkyl, be preferably C 1-C 16Alkyl, R, R 1, R 2, R 3, R 4, R ' can be identical, also can be inequality.
The known art methods preparation that the used alkali ionic liquid of the present invention adopts those skilled in the art to know.
The mass ratio of described alkali ionic liquid and yellow soda ash is 1-100: 1.
Add ion liquid quality in the catalytic oxidation process and be 0.001~1 times of isopropyl benzene, be preferably: 0.002~0.5 times.
The temperature of reaction of catalyzed oxidation is 60~150 ℃, and air flow quantity is 25~120L/ (a hmol isopropyl benzene), and the reaction times is 2~72 hours, is preferably 15~36 hours.
The invention effect: method of the present invention adopts alkali ionic liquid and sodium carbonate mixture as catalyzer, when having improved THE AUTOXIDATION OF CUMENE speed, produce a considerable amount of hydrogen phosphide cumenes and dimethyl benzyl alcohol, being about to cumene oxidation becomes hydrogen phosphide cumene and dimethyl benzyl alcohol ratio near 1: 1 mixture, avoided in the DCP production process hydrogen phosphide cumene being reduced into the link of benzylalcohol, the direct condensation of this mixture can generate DCP.Can directly carry out condensation and obtain DCP, save the reduction step in the DCP raw material production process, reduce the DCP production cost.And adopt the alkali ionic liquid polymkeric substance as catalyzer, not only improve the rate of oxidation of alkylbenzene and the selectivity of raising hydroperoxide, catalyzer separates with reactant flow easily simultaneously, has reduced the shadow to subsequent technique.
Description of drawings
Fig. 1 isopropyl benzene prepares the reaction process of DCP.
Embodiment
Comparative Examples 1
Comparative Examples 1 is the base catalysis method for oxidation that adopts usually.
Getting the 15g isopropyl benzene is put in the there-necked flask of taking back stream device, stirring, add the mass percentage concentration 1.5gNaOH aqueous solution (mass concentration 2%), 90 ℃ of temperature of reaction, bubbling air 200ml/min, react after 24 hours, the transformation efficiency of isopropyl benzene is 30%, and the selectivity of hydrogen phosphide cumene is 90%.
Embodiment 1
Getting the 15g isopropyl benzene is put in the there-necked flask of taking back stream device, stirring, add 0.08g hydroxide 1-methyl, the 3-butyl imidazole, 0.02g yellow soda ash, 60 ℃ of temperature of reaction, bubbling air 200ml/min, react after 24 hours, the transformation efficiency of isopropyl benzene is 80%, and the selectivity of hydrogen phosphide cumene is 45%, the selectivity 40% of dimethyl benzyl alcohol.
Embodiment 2
Getting the 15g isopropyl benzene is put in the there-necked flask of taking back stream device, stirring, add 0.1g hydroxide 1-methyl, 3-hexyl imidazoles, 0.1g yellow soda ash, 90 ℃ of temperature of reaction, bubbling air 150ml/min reacts after 36 hours, the transformation efficiency of isopropyl benzene is 94%, and the selectivity of hydrogen phosphide cumene is 37%.The selectivity 40% of dimethyl benzyl alcohol.
Embodiment 3
Get the 15g isopropyl benzene and be put in the there-necked flask of taking back stream device, stirring, add 6.69g hydroxide butyl-pyridinium, 1.02g yellow soda ash, 90 ℃ of temperature of reaction, bubbling air 150ml/min reacts after 36 hours, the transformation efficiency of isopropyl benzene is 94%, and the selectivity of hydrogen phosphide cumene is 42%.The selectivity 40% of dimethyl benzyl alcohol.
Embodiment 4
Getting the 20g isopropyl benzene is put in the there-necked flask of taking back stream device, stirring, add the 1.54g tetraethyl ammonium hydroxide, 0.62g 100 ℃ of yellow soda ash temperature of reaction, bubbling air 160ml/min, react after 33 hours, the transformation efficiency of isopropyl benzene is 99%, and the selectivity of hydrogen phosphide cumene is 35%, the selectivity 30% of dimethyl benzyl alcohol
Embodiment 5
Getting the 15g isopropyl benzene is put in the there-necked flask of taking back stream device, stirring, add 0.07g hydroxide 1-methyl 3-ethyl imidazol(e), 0.02g yellow soda ash, 105 ℃ of temperature of reaction, bubbling air 100ml/min reacted after 20 hours, and the transformation efficiency of isopropyl benzene is 75%, the selectivity of hydrogen peroxide isopropyl benzene is 46%, the selectivity 42% of dimethyl benzyl alcohol
Embodiment 6
Getting the 15g isopropyl benzene is put in the there-necked flask of taking back stream device, stirring, add 2.00g hydroxide 1-methyl 3-octadecyl imidazoles, 0.02g yellow soda ash, 100 ℃ of temperature of reaction, bubbling air 100ml/min reacted after 16 hours, and the transformation efficiency of isopropyl benzene is 85%, the selectivity of hydrogen peroxide isopropyl benzene is 49%, the selectivity 44% of dimethyl benzyl alcohol.

Claims (7)

1.一种用于生产过氧化二异丙苯的原料的制备方法,其特征在于,采用碱性离子液体和碳酸钠的混合物作为催化剂,以空气作为氧源,将异丙苯经催化氧化制成过氧化氢异丙苯和二甲基苄醇的混合物。1. a preparation method for the raw material of producing dicumyl peroxide, it is characterized in that, adopt the mixture of alkaline ionic liquid and sodium carbonate as catalyzer, with air as oxygen source, cumene is prepared through catalytic oxidation into a mixture of cumene hydroperoxide and dimethyl benzyl alcohol. 2.按照权利要求1的方法,其特征在于,碱性离子液体为咪唑型、吡啶型、季铵或季磷盐型碱性离子液体,具体结构如下:2. according to the method for claim 1, it is characterized in that, basic ionic liquid is imidazole type, pyridine type, quaternary ammonium or quaternary phosphonium salt type basic ionic liquid, and concrete structure is as follows:
Figure FDA0000049754790000011
Figure FDA0000049754790000011
上式中X-=OH-,R,R1,R2,R3,R4,R′为C1-C18的烷基,R,R1,R2,R3,R4,R′可以相同,也可以不相同。In the above formula, X - = OH - , R, R 1 , R 2 , R 3 , R 4 , R' is C 1 -C 18 alkyl, R, R 1 , R 2 , R 3 , R 4 , R ' can be the same or different.
3.按照权利要求1的方法,其特征在于,碱性离子液体与碳酸钠的质量比为1-100∶1。3. according to the method for claim 1, it is characterized in that, the mass ratio of alkaline ionic liquid and sodium carbonate is 1-100: 1. 4.按照权利要求1的方法,其特征在于,离子液体的质量为异丙苯的0.001~1倍。4. according to the method for claim 1, it is characterized in that, the quality of ionic liquid is 0.001~1 times of cumene. 5.按照权利要求4的方法,其特征在于,离子液体的质量为异丙苯的0.002~0.5倍。5. according to the method for claim 4, it is characterized in that, the quality of ionic liquid is 0.002~0.5 times of cumene. 6.按照权利要求1的方法,其特征在于,催化氧化的反应温度为60~150℃,空气流量为25~120L/(h·mol异丙苯),反应时间为2~72小时。6. according to the method for claim 1, it is characterized in that, the reaction temperature of catalytic oxidation is 60~150 ℃, and air flow is 25~120L/(hmol cumene), and reaction time is 2~72 hours. 7.按照权利要求6的方法,其特征在于,反应时间为15~36小时。7. The method according to claim 6, characterized in that the reaction time is 15 to 36 hours.
CN2011100596726A 2011-03-11 2011-03-11 Method for preparing raw material for producing dicumyl peroxide Expired - Fee Related CN102199114B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104860861A (en) * 2015-04-01 2015-08-26 中石化上海工程有限公司 Production method for dicumyl peroxide (DCP)
CN115403446A (en) * 2022-09-01 2022-11-29 山东阳谷华泰化工股份有限公司 Synthetic method of alpha, alpha' -dihydroxy-1, 3-diisopropylbenzene
CN119707768A (en) * 2024-12-30 2025-03-28 常州瑞华化工工程技术股份有限公司 Isobutane oxidation method and system

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB681990A (en) * 1949-01-25 1952-11-05 Distillers Co Yeast Ltd Oxidation of aromatic hydrocarbons
US2681936A (en) * 1950-08-03 1954-06-22 Allied Chem & Dye Corp Sodium carbonate in cumene oxidation
CN101538020A (en) * 2008-03-21 2009-09-23 北京化工大学 Method for producing hydroperoxides by catalytic oxidation of aromatic hydrocarbons containing isopropyl

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB681990A (en) * 1949-01-25 1952-11-05 Distillers Co Yeast Ltd Oxidation of aromatic hydrocarbons
US2681936A (en) * 1950-08-03 1954-06-22 Allied Chem & Dye Corp Sodium carbonate in cumene oxidation
CN101538020A (en) * 2008-03-21 2009-09-23 北京化工大学 Method for producing hydroperoxides by catalytic oxidation of aromatic hydrocarbons containing isopropyl

Non-Patent Citations (2)

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Title
吴俊荣等: "《异丙苯氧化的研究进展 》", 《广州化工》 *
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104860861A (en) * 2015-04-01 2015-08-26 中石化上海工程有限公司 Production method for dicumyl peroxide (DCP)
CN115403446A (en) * 2022-09-01 2022-11-29 山东阳谷华泰化工股份有限公司 Synthetic method of alpha, alpha' -dihydroxy-1, 3-diisopropylbenzene
CN115403446B (en) * 2022-09-01 2023-12-29 山东阳谷华泰化工股份有限公司 Synthesis method of alpha, alpha' -dihydroxyl-1, 3-diisopropylbenzene
CN119707768A (en) * 2024-12-30 2025-03-28 常州瑞华化工工程技术股份有限公司 Isobutane oxidation method and system
CN119707768B (en) * 2024-12-30 2025-07-01 常州瑞华化工工程技术股份有限公司 Isobutane oxidation method and system

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