CN103878021B - Alkyl benzene amine is as the purposes of anthraquinone regenerated catalyst in process for prepairng hydrogen peroxide by anthraquinone process - Google Patents
Alkyl benzene amine is as the purposes of anthraquinone regenerated catalyst in process for prepairng hydrogen peroxide by anthraquinone process Download PDFInfo
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- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 150000004056 anthraquinones Chemical class 0.000 title claims abstract description 100
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 74
- 239000003054 catalyst Substances 0.000 title claims abstract description 25
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N N-phenyl amine Natural products NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 title claims description 14
- 150000004996 alkyl benzenes Chemical class 0.000 title description 4
- 239000012224 working solution Substances 0.000 claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- 150000001875 compounds Chemical class 0.000 claims abstract description 25
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 5
- 125000003282 alkyl amino group Chemical group 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims description 27
- 238000007254 oxidation reaction Methods 0.000 claims description 27
- 230000001186 cumulative effect Effects 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 6
- -1 amido aniline Chemical compound 0.000 claims description 5
- MQXVNXKZFPANHN-UHFFFAOYSA-N 1-butyl-2-methyl-1-phenylhydrazine Chemical compound CNN(C1=CC=CC=C1)CCCC MQXVNXKZFPANHN-UHFFFAOYSA-N 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- SQDOPZMVBHIQLL-UHFFFAOYSA-N n-butyl-n-methoxyaniline Chemical compound CCCCN(OC)C1=CC=CC=C1 SQDOPZMVBHIQLL-UHFFFAOYSA-N 0.000 claims description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims 2
- BNLKGLOEGPAPSP-UHFFFAOYSA-N N-butyl-N-dodecoxyaniline Chemical compound C(CCC)N(C1=CC=CC=C1)OCCCCCCCCCCCC BNLKGLOEGPAPSP-UHFFFAOYSA-N 0.000 claims 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims 1
- 230000008929 regeneration Effects 0.000 abstract description 22
- 238000011069 regeneration method Methods 0.000 abstract description 22
- 150000007530 organic bases Chemical class 0.000 abstract description 16
- 239000007857 degradation product Substances 0.000 abstract description 14
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- 125000000217 alkyl group Chemical group 0.000 abstract description 3
- FZPXKEPZZOEPGX-UHFFFAOYSA-N n,n-dibutylaniline Chemical compound CCCCN(CCCC)C1=CC=CC=C1 FZPXKEPZZOEPGX-UHFFFAOYSA-N 0.000 description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 230000001590 oxidative effect Effects 0.000 description 9
- 230000002123 temporal effect Effects 0.000 description 9
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 8
- 239000003513 alkali Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000035484 reaction time Effects 0.000 description 7
- 230000001172 regenerating effect Effects 0.000 description 6
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229940126680 traditional chinese medicines Drugs 0.000 description 3
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- RGHILYZRVFRRNK-UHFFFAOYSA-N anthracene-1,2-dione Chemical compound C1=CC=C2C=C(C(C(=O)C=C3)=O)C3=CC2=C1 RGHILYZRVFRRNK-UHFFFAOYSA-N 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007115 recruitment Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000002508 compound effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002815 homogeneous catalyst Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- VSHTWPWTCXQLQN-UHFFFAOYSA-N n-butylaniline Chemical compound CCCCNC1=CC=CC=C1 VSHTWPWTCXQLQN-UHFFFAOYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- 238000004704 ultra performance liquid chromatography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Classifications
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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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
The invention provides a kind of compound alkyl phenylamino of general formula I as the purposes of anthraquinone regenerated catalyst in process for prepairng hydrogen peroxide by anthraquinone process, wherein: R represents alkyl, alkoxyl or alkylamino. This compound is applied to the regeneration of anthraquinone degradation products in process for prepairng hydrogen peroxide by anthraquinone process. Inventor finds that this compound has outstanding catalytic performance in reaction after deliberation, and has good stability, has overcome the bad shortcoming of the activated organic base of general tool stability in anthraquinone working solution. The current mechanism of this excellent properties of the present invention is not also very clear and definite, may in the main component heavy aromatics of working solution, can keep relevant compared with stiff stability with this compound.
Description
Technical field
The present invention relates to chemical industry field, be specifically related to alkyl benzene amine as anthracene in process for prepairng hydrogen peroxide by anthraquinone processThe new purposes of quinone regenerated catalyst.
Background technology
Hydrogen peroxide has another name called hydrogen peroxide, be a kind of have stronger oxidability strong oxidizer, after decomposition, only produce waterAnd oxygen. Along with the enhancing of people's environmental consciousness, hydrogen peroxide is extensively recognized as the eco-friendly chemical products of one in recent yearsKnow, can be applicable to the raw material, bactericide, disinfectant, anticorrisive agent of bleaching agent, inorganic or organic peroxide etc. field.
The industrial process of hydrogen peroxide is mainly anthraquinone, and its principle is as 2-EAQ (EAQ) by alkyl-anthraquinoneBe dissolved in the mixed solvent of heavy aromatics and tripolyphosphate composition and make working solution. First working solution carries out hydrogenation, workThe alkyl-anthraquinone of doing in liquid is converted into corresponding alkyl hydrogen anthraquinone (EAQH2) and tetrahydrochysene alkyl hydrogen anthraquinone (H4EAQH2). Then hydrogenAnthraquinone and oxygen or air reaction, hydrogen anthraquinone is converted into corresponding alkyl-anthraquinone and tetrahydrochysene alkyl-anthraquinone (H4EAQ), generate simultaneouslyHydrogen peroxide. After water extraction hydrogen peroxide, working solution recycles.
In above-mentioned hydrogenation and oxidation process, alkyl-anthraquinone inevitably generates some accessory substances, and these lose production energyThe accessory substance of power is referred to as degradation product. The existence of degradation product not only can reduce effective anthraquinone in working solution (alkyl-anthraquinone and tetrahydrochyseneAlkyl hydrogen anthraquinone) content but also can affect hydrogen peroxide product quality, seriously hindered the normal operation of producing. Industry at presentThe a large amount of solid alkaline activated alumina of upper general use is regenerated, but this catalyst regeneration efficiency and less stable makeShort and dry linting rate is higher with the life-span, cause huge financial burden and product safety hidden danger to manufacturing enterprise, therefore preparation regenerationActive high, the novel anthraquinone regenerated catalyst tool of good stability is of great significance.
At present, in prior art, organic alkali catalyst can dissolve each other with anthraquinone working solution, is homogeneous catalyst, in anthraquinone workOxidation stage in process flow is regenerated to anthraquinone degradation products, and such catalyst is saved greatly compared to solid base catalystSpace and cost, but the stability of organic alkali catalyst in anthraquinone working solution is the maximum of this catalyst of restriction development alwaysFactor.
Summary of the invention
The present invention aims to provide new as anthraquinone regenerated catalyst in process for prepairng hydrogen peroxide by anthraquinone process of alkyl benzene aminePurposes.
The compound of general formula I of the present invention is as the purposes of anthraquinone regenerated catalyst in process for prepairng hydrogen peroxide by anthraquinone process,Play palingenesis at the oxidation stage of producing hydrogen peroxide:
I
Wherein:
R represents alkyl, alkoxyl or alkylamino.
2, purposes as claimed in claim 1, wherein:
R represents alkyl, alkoxyl or the alkylamino containing 1-20 carbon atom.
Preferably, one of described compound is following compound: N, N-dibutyl aniline, N-butyl-N-methoxybenzeneAmine, N-methylamino-N-butylaniline.
The consumption of described compound is the 0.5%-20% of anthraquinone working solution cumulative volume.
Described compound adds start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before.
Consumption and the application process of described compound are as follows: for the 0.5%-20% of anthraquinone working solution cumulative volume, anthraquinoneIn production hydrogen peroxide process, the oxidation stage recovery time is controlled as 0.1-200h, and reaction temperature is 30～70 DEG C.
Preferably, consumption and the application process of described compound are as follows: for 5% of anthraquinone working solution cumulative volume, anthraquinoneIn production hydrogen peroxide process, the oxidation stage time is controlled as 2h, and reaction temperature is 40～50 DEG C.
The invention provides the compound of general formula I, this compound is applied to anthraquinone in process for prepairng hydrogen peroxide by anthraquinone processThe catalyst of regeneration. Inventor finds that this compound has outstanding catalytic performance in reaction after deliberation, and has goodStability, overcome the bad shortcoming of the activated organic base of general tool stability in anthraquinone working solution. Of the present invention thisThe current mechanism of one excellent properties is not also very clear and definite, may in the main component heavy aromatics of working solution, can protect with this compoundHold relevant compared with stiff stability.
The present invention is taking the compound of general formula I as catalyst, and the recruitment of its effective anthraquinone can reach 3.61g/L, increases effectObviously, have a good application prospect.
Brief description of the drawings
Accompanying drawing of the present invention is as follows:
Fig. 1 is compound of Formula I of the present invention and the reaction stability of different organic alkali catalysts;
Fig. 2 is the impact of compound amount of the present invention on regenerating anthraquinone degradation products reaction;
Fig. 3 is the impact of differential responses time on regenerating anthraquinone degradation products reaction under compound effects of the present invention;
Fig. 4 is compound of the present invention impact on regenerating anthraquinone degradation products reaction at differential responses temperature.
Detailed description of the invention
Embodiment 1
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volume0.5% N, N-dibutyl aniline, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 0.1h, anti-Answering temperature is 30 DEG C, in working solution, passes into oxygen, starts reaction, and along with the continuation of oxidizing process, the anthraquinone in working solution is notDisconnected regeneration, temporal evolution and constantly increasing, after 0.1h, increment reaches 1.70g/L.
Embodiment 2
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volume20% N, N-dibutyl aniline, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 200h, anti-Answering temperature is 70 DEG C, in working solution, passes into oxygen, starts reaction, and along with the continuation of oxidizing process, the anthraquinone in working solution is notDisconnected regeneration, temporal evolution and constantly increasing, after 2h, increment reaches 3.81g/L.
Embodiment 3
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volume5% N, N-dibutyl aniline, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 2h, reaction temperatureDegree is 40 DEG C, in working solution, passes into oxygen, starts reaction, and along with the continuation of oxidizing process, the anthraquinone in working solution constantly againRaw, temporal evolution and constantly increasing, after 4h, increment reaches 3.21g/L.
Embodiment 4
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volume10% N, N-dibutyl aniline, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 30h, anti-Answering temperature is 50 DEG C, in working solution, passes into oxygen, starts reaction, and along with the continuation of oxidizing process, the anthraquinone in working solution is notDisconnected regeneration, temporal evolution and constantly increasing, after 30h, increment reaches 3.66g/L.
Embodiment 5
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volume15% N, N-dibutyl aniline, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 100h, anti-Answering temperature is 60 DEG C, in working solution, passes into oxygen, starts reaction, and along with the continuation of oxidizing process, the anthraquinone in working solution is notDisconnected regeneration, temporal evolution and constantly increasing, after 100h, increment reaches 3.74g/L.
Embodiment 6
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volumeN-butyl-N-aminoanisole of 1%, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 1h, anti-Answering temperature is 35 DEG C, in working solution, passes into oxygen, starts reaction, and along with the continuation of oxidizing process, the anthraquinone in working solution is notDisconnected regeneration, temporal evolution and constantly increasing, after 1h, increment reaches 3.38g/L.
Embodiment 7
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volumeN-butyl-N-aminoanisole of 8%, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 3h, anti-Answering temperature is 45 DEG C, in working solution, passes into oxygen, starts reaction, and along with the continuation of oxidizing process, the anthraquinone in working solution is notDisconnected regeneration, temporal evolution and constantly increasing, after 3h, increment reaches 3.56g/L.
Embodiment 8
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volumeN-methylamino-N-butylaniline of 12%, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 8h,Reaction temperature is 55 DEG C, in working solution, passes into oxygen, starts reaction, along with the continuation of oxidizing process, and the anthraquinone in working solutionConstantly regeneration, temporal evolution and constantly increasing, after 8h, increment reaches 3.46g/L.
Embodiment 9
Start oxidation stage in process for prepairng hydrogen peroxide by anthraquinone process before, add and be equivalent to anthraquinone working solution cumulative volumeN-methylamino-N-butylaniline of 2%, in process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 20h,Reaction temperature is 65 DEG C, in working solution, passes into oxygen, starts reaction, along with the continuation of oxidizing process, and the anthraquinone in working solutionConstantly regeneration, temporal evolution and constantly increasing, after 20h, increment reaches 3.72g/L.
Experimental example 1
1 experimental section
1.1 experimental raw
Pyridine: analyze pure, Chengdu Ke Long chemical reagent factory; Aniline: analyze pure, Chemical Co., Ltd. of traditional Chinese medicines group; Second twoAmine: analyze pure, Chemical Co., Ltd. of traditional Chinese medicines group; Anthraquinone working solution: industrial goods, the about 20g/L of degradate concentrations, LiuzhouChemical Industry Group Co., Ltd; Alkali alumina regenerative agent, industrial goods, Liuzhou Chemical Industry Group Co., Ltd; OxygenGas: 99.99%, gas studies Co., Ltd of Guangxi China Telecom. N, N-dibutyl aniline, analyze pure, the limited public affairs of traditional Chinese medicines group chemistryDepartment.
Course of reaction
This experiment is to carry out in a laminated glass tower, and tower internal diameter is 30mm, makes to keep permanent in tower by water bath with thermostatic controlFixed temperature, by volume ratio adds each regenerated catalyst, mix rear assaying reaction with 100ml anthraquinone working solution before effectivelyThe concentration of anthraquinone. At the bottom of tower, continue to pass into oxygen, in the differential responses time, respectively get 1ml working solution ThermoFisherThe Ultra Performance Liquid Chromatography of Scientific company is analyzed anthraquinone working solution composition and is changed, and adjusts reaction condition and observe it to againThe impact of raw experimental result.
Result and discussion
The catalytic activity of 2.1 organic bases
40 DEG C of reaction temperatures, add the each catalyst of 5ml in 100ml anthraquinone working solution, different organic bases after reaction 24hTo the regeneration activity of anthraquinone degradation products in table 1. As shown in Table 1, pyridine, aniline, ethylenediamine, N, N-dibutyl aniline is to anthraquinoneThe regeneration of degradation product all has certain catalytic activity, can make degradation product and H4The content of EAQ reduces, and is converted into EAQ and makes its contentRise, finally make effective anthraquinone content be improved. Wherein ethylenediamine and N, N-dibutyl aniline to the increment of EAQ the mostObviously, but the strong basicity of ethylenediamine can cause part H4EAQ is converted into other degradation products, thereby the increment of effective anthraquinone is putSlow, and N, H in N-dibutyl aniline system4The slippage of EAQ is lower, and major part is converted into EAQ, and the increment of effective anthraquinoneHeight, catalytic activity the best.
The working solution that intercepts alkali alumina regeneration front and back in commercial plant is analyzed, and analysis result is also listed in table 1.Known with the contrast of organic base regeneration activity result, N, the regeneration activity of N-dibutyl aniline is better than existing industrial regenerative agent alkalescenceAluminium oxide.
The activity of the different organic base regeneration of table 1 anthraquinone degradation products
| Catalyst | EAQ increment/g.L-1 | H4EAQ increment/g.L-1 | Effective anthraquinone increment/g.L-1 |
| Pyridine | 2.53 | -0.49 | 2.04 |
| Aniline | 1.34 | -0.25 | 1.09 |
| Ethylenediamine | 4.16 | -1.42 | 2.74 |
| N, N-dibutyl aniline | 4.02 | -0.41 | 3.61 |
| Alkali alumina | 3.58 | -0.56 | 3.02 |
The reaction stability of 2.2 organic alkali catalysts
As shown in Figure 1,40 DEG C of reaction temperatures, add 5ml organic alkali catalyst, in 36h in 100ml anthraquinone working solutionEvery 6h gets a sample and analyzes, and the catalyst surplus of different organic bases in anthraquinone working solution changes sees Fig. 1. By Fig. 1Known, pyridine, aniline, ethylenediamine and N, N-dibutyl aniline is in the growth in time of the surplus of anthraquinone working solution and progressivelyDecline, this is that other materials cause because the composition in organic base and anthraquinone working solution reacts formation. Wherein N, N-bis-The slippage of butylaniline is minimum, and after 36h, organic base surplus is 96.43%, in the reaction system of anthraquinone working solution, showsGo out very high stability, this may can keep in the main component heavy aromatics of working solution with this organic base having compared with stiff stabilityClose, in sum, N, the regeneration activity of N-dibutyl aniline and optimal stability.
The investigation of reaction condition
2.2.1 the impact of organic base consumption
As shown in Figure 2,40 DEG C of reaction temperatures, the reaction time is 24h, adds respectively volume fraction in anthraquinone working solutionBe 0.5,1,3,5,10,15,20% N, N-dibutyl aniline, catalyst amount is shown in Fig. 2 to the impact of regeneration effect. By Fig. 2Can find out, along with the raising of organic base consumption, the recruitment of effective anthraquinone also improves thereupon, but after consumption exceedes 5%, effectively anthraceneQuinone increment tends towards stability, and this is the cause that reaction is subject to thermodynamics equilibrium limit, continues to increase catalyst little on reaction impact, because ofThis best organic base addition is 5%.
The impact in reaction time
As shown in Figure 3,40 DEG C of reaction temperatures, N, N-dibutyl aniline addition is 5%, the reaction time is to regeneration effectImpact see Fig. 3. As seen from Figure 3, between 6～24h, along with the prolongation in reaction time, the content of effective anthraquinone significantly increasesAdd, in reaction, 24h reaches maximum, after this extends the reaction time again, and the content of effective anthraquinone is little, and this may be anthraceneQuinone degradation product and H4EAQ is converted into the cause of EAQ reaction arrival thermodynamical equilibrium. Therefore the suitable reaction time is 24h.
The impact of reaction temperature
As shown in Figure 4, N, N-dibutyl aniline addition is 5%, and the reaction time is 24h, and reaction temperature is to regeneration effectImpact see Fig. 4. As seen from Figure 4, in the time that reaction temperature is raised to 40 DEG C by 20 DEG C, the content of effective anthraquinone significantly increases,Illustrate that rising reaction temperature is conducive to the carrying out of reaction. Reaction temperature between 40 DEG C to 50 DEG C, the content of effective anthraquinoneNot quite, illustrate in this temperature section temperature on reaction process impact not quite. But when reaction temperature rises to 50～80 DEG C, effectively anthraceneThe content of quinone but starts to have declined, and this is mainly because EAQ and H4EAQ causes along with the raising of temperature is converted into other degradation productsThe cause that effective anthraquinone content declines. Therefore, suitable reaction temperature is between 40～50 DEG C.
Sum up
Taking organic base as regenerated catalyst, study the anti-of regenerating anthraquinone degradation products in process for prepairng hydrogen peroxide by anthraquinone techniqueShould. Tested the regeneration activity of different organic bases and the stability in anthraquinone working solution, found N, N-dibutyl aniline is generationThe compound of the general formula I of table shows outstanding performance in reaction, has overcome the activated organic base of general tool in anthraquinone workMake the bad shortcoming of stability in liquid.
Claims (7)
1. the compound of general formula I, as the purposes of anthraquinone regenerated catalyst in process for prepairng hydrogen peroxide by anthraquinone process, was being producedThe oxidation stage of hydrogen oxide plays palingenesis:
Wherein: R represents alkoxyl or alkylamino ,-C4H9For the one of normal-butyl, sec-butyl, isobutyl group and the tert-butyl group.
2. purposes as claimed in claim 1, wherein: R represents alkoxyl or the alkylamino containing 1-20 carbon atom.
3. purposes as claimed in claim 1, one of wherein said compound is following compound: N-butyl-N-methoxybenzeneAmine, the N-tert-butyl group-N-amoxy aniline, N-normal-butyl-N-dodecyloxy aniline, N-methylamino-N-butylaniline, N-butylamineBase-N-sec-butyl aniline, N-isobutyl group-N-is amido aniline.
4. purposes as claimed in claim 1, the consumption of wherein said compound is the 0.5%-of anthraquinone working solution cumulative volume20％。
5. purposes as claimed in claim 1, described compound starts oxidation degree in process for prepairng hydrogen peroxide by anthraquinone processBefore section, add.
6. purposes as claimed in claim 1, the consumption of described compound is the 0.5%-20% of anthraquinone working solution cumulative volume,In process for prepairng hydrogen peroxide by anthraquinone process, the oxidation stage recovery time is controlled as 0.1-200h, and reaction temperature is 30～70 DEG C.
7. purposes as claimed in claim 6, the consumption of described compound is 5% of anthraquinone working solution cumulative volume, anthraquinoneIn production hydrogen peroxide process, the oxidation stage time is controlled as 2h, and reaction temperature is 40～50 DEG C.
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| CN201410097020.5A CN103878021B (en) | 2014-03-17 | 2014-03-17 | Alkyl benzene amine is as the purposes of anthraquinone regenerated catalyst in process for prepairng hydrogen peroxide by anthraquinone process |
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| US4668499A (en) * | 1986-01-27 | 1987-05-26 | E. I. Du Pont De Nemours And Company | Process for manufacturing hydrogen peroxide |
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| US4668499A (en) * | 1986-01-27 | 1987-05-26 | E. I. Du Pont De Nemours And Company | Process for manufacturing hydrogen peroxide |
| CN101037190A (en) * | 2007-04-13 | 2007-09-19 | 福州大学 | Working solution prescription and technology for preparing hydrogen peroxide by anthraquinone process |
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