CN104324584A - Method for preparing microemulsion system containing function ion liquid and method for absorbing carbon dioxide by utilizing spontaneous emulsion - Google Patents
Method for preparing microemulsion system containing function ion liquid and method for absorbing carbon dioxide by utilizing spontaneous emulsion Download PDFInfo
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- CN104324584A CN104324584A CN201410615124.0A CN201410615124A CN104324584A CN 104324584 A CN104324584 A CN 104324584A CN 201410615124 A CN201410615124 A CN 201410615124A CN 104324584 A CN104324584 A CN 104324584A
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Abstract
The invention relates to a method for preparing a microemulsion system by adopting function ion liquid, namely aminoethyl buthylimidazole hexafluorophosphate. The method enhances the adsorption of carbon dioxide by utilizing spontaneous emulsion formed by the microemulsion so as to increase the absorption rate of the carbon dioxide. The prepared microemulsion adopts the aminoethyl buthylimidazole hexafluorophosphate as a polar phase, adopts cyclohexane as an oil phase, adopts octylphenyl polyoxyethylene ether as a surfactant and adopts n-butyl alcohol as a cosurfactant to prepare the function-ion-liquid microemulsion containing the function ion liquid. The method has the advantages that the function-ion-liquid microemulsion is dispersed in methyldiethanolamine aqueous solution to form the spontaneous emulsion with the range of average particle diameter being 200-500 nanometers, and the absorption process of the carbon dioxide is enhanced by utilizing microemulsion drops dispersed in the spontaneous emulsion, so that the absorption rate of the carbon dioxide is increased.
Description
Technical field
The present invention relates generally to the method for the preparation of a kind of functional ion liquid microemulsion and strengthening carbon dioxide absorption thereof, particularly relates to a kind of method adopting functional ion liquid aminoethyl butyl imidazole hexafluorophosphate to prepare functional ion liquid microemulsion.
Background technology
Ionic liquid is made up of organic cation and inorganic or organic anion, is the salt in liquid condition below 100 DEG C.The feature that ionic liquid structure is adjustable makes it have designability, can introduce the functional group with property, thus design and synthesis has ionic liquid and the functionalized ion liquid of certain specific function.Functionalized ion liquid has the characteristic of conventional ionic liquid, and as non-volatile, low melting point, higher boiling, good heat endurance and the high-dissolvability etc. to carbon dioxide, functional ion liquid is because of the introducing of different functional groups simultaneously, has been endowed new function.Functional ion liquid can have different functions according to the functional group difference of giving: the functionalized ion liquid as amido increases amine groups in ionic liquid, makes it with alkalescence, improve the absorption efficiency to sour gas; Sulphonic acids functionalized ion liquid is in cation, introduce sulfonic acid (-SO
3h) group, makes it have strong acidity, has very strong effect to alkaline matter; Amino acids functionalized ion liquid, because it has amino acid functional group and can not only dissolve living matter, can also provide stable chiral centre.The applications such as functionalized ion liquid can be widely used in organic synthesis, purification technique, polymerization catalyzed.
Microemulsion is the thermodynamically stable, isotropic of two kinds of immiscible liquids formation, appearance transparent or translucent dispersion, and primarily of oil phase, aqueous phase, surfactant, cosurfactant four components are formed.Decentralized photo particle is spherical, but radius is very little, usually in 10-100nm scope.Microemulsion is divided three classes: water-in-oil type (W/O), oil-in-water type (O/W) and two-arch tunnel structure.Namely in fact the application of microemulsion occur as far back as the thirties.Some floor polishing wax liquid, fuel, machine cut oil, sesame oil, washing agent adopt the form of microemulsion.Research shows, in much industry and technical field, as in the fields such as tertiary oil recovery, washing decontamination, catalyzed chemical reaction medium, drug delivery, synthesizing new nano material, microemulsion all has potential using value.Since the reported first microemulsions such as Schulman, the Theory and applications research of micro emulsion obtains and develops rapidly.Especially, since the nineties, the research and development of microemulsion application aspect obtains faster.The micro emulsion research of China starts from the initial stage eighties, in theory and application study, also obtain suitable achievement.
Preparation about conventional ionic liquid microemulsion has bibliographical information, and the microemulsion system such as prepared mutually using ionic liquid 1-butyl 3 methyl imidazolium tetrafluoroborate for polarity forms the silica sphere of hollow as template; The microemulsion system prepared for nonpolar phase with ionic liquid 1-butyl 3 methylimidazole hexafluorophosphate improves the activity of LiP and laccase two kinds of fungal oxidation enzymes; With ionic liquid 12 alkyl-3 methylimidazole villaumite for surfactant, the synthesizing chlorinated Nano silver grain of reverse micro emulsion constructed with methyl methacrylate and acrylamide mixing oil phase, prepare silver chlorate/(methyl methacrylate and acrylamide) hybridized film by micro-emulsion polymerization, the infiltration evaporation for cyclohexane mixtures is separated.
Although the preparation of conventional ionic liquid microemulsion is concerned, but so far, yet there are no the report of functional ionic liquids microemulsion prepared by relevant the present invention, main cause is that functional ion liquid product category is few, not commercially available, meanwhile, the preparation of functional ion liquid microemulsion system also not easily.Functional ion liquid microemulsion system replaces the component (oil phase, aqueous phase, surfactant) of microemulsion with functionalized ion liquid and forms the novel microemulsion system containing functionalized ion liquid.Owing to having no the functional ion liquid microemulsion system successfully prepared, so its application study is blank.But because such system introduces functional group, its selective and selectivity is in the application strengthened, is expected to be applied to chemical industry, medicine and other fields, especially can plays a role in the preparation of chemical separating, reaction, fine material.
Summary of the invention
Goal of the invention:
The object of the invention is to prepare with functional ionic liquids aminoethyl butyl imidazole hexafluorophosphate the functional ion liquid microemulsion being polarity phase.Due to the existence of functional ion liquid amido, make this system have alkalescence, therefore this system have potential using value in sour gas separation etc.
Technical scheme:
A preparation method for functional ion liquid microemulsion, is characterized in that: with functional ion liquid aminoethyl butyl imidazole hexafluorophosphate for polarity prepares functional ion liquid microemulsion mutually, and this microemulsion is dispersed in water, forms spontaneous microemulsion.
Concrete steps are as follows:
(1) microemulsion prepared: with aminoethyl butyl imidazole hexafluorophosphate for polarity phase, take cyclohexane as oil phase, taking octyl phenyl polyoxyethylene ether as surfactant (Triton x-100), take n-butanol as the functional ion liquid microemulsion that cosurfactant prepares containing functional ion liquid;
(2) spontaneous emulsion system: on basis prepared by step (1) functional ion liquid microemulsion, is put into the emulsion dispersion system of average particle size range at 200-500nm of spontaneous formation in the methyl diethanolamine aqueous solution.
The mass ratio of functional ion liquid aminoethyl butyl imidazole hexafluorophosphate, cyclohexane and surfactant is 1:9.9 ~ 12.3:13.2 ~ 15.2; The mass ratio of surfactant octyl phenyl polyoxyethylene ether and cosurfactant n-butanol is 1.5 ~ 1.8:1.
In the methyl diethanolamine aqueous solution, the mass concentration scope of methyl diethanolamine is at 5-10%.
By a method for the spontaneous emulsion strengthening carbon dioxide absorption of the functional ion liquid microemulsion of above-mentioned preparation, it is characterized in that: adopt above-mentioned obtained spontaneous emulsion strengthening absorption rate of carbon dioxide process as follows:
The three mouthfuls of containers adopted are as the absorber of carbon dioxide, and three mouths are respectively carbon dioxide input port, absorbent charging aperture and stirring port; Store the carbon dioxide inputted from gas cylinder as surge tank with stainless steel cylinder; Absorber and surge tank are placed in water bath with thermostatic control; Utilize vavuum pump that air is discharged from absorber; Carbon dioxide is passed into surge tank from gas cylinder through pressure maintaining valve; Carbon dioxide in surge tank is passed into absorber until pressure reaches 0.1MP, ensures to be full of carbon dioxide in absorber; Loaded in reactor by the spontaneous emulsion system of preparation, starting to stir and arranging agitator revolution is 110-300 rev/min again; Along with carbon dioxide is absorbed by absorbent, the pressure drop in absorber, U-shaped pipe differential manometer can produce pressure reduction, when pressure reduction registration no longer changes, namely close to absorption equilibrium.
Advantage and effect:
The present invention proposes the method for the preparation of a kind of functional ion liquid microemulsion and strengthening carbon dioxide absorption thereof, have the following advantages:
(1) microemulsion has potential application in nano material, medical medicine carrying and separation etc., the present invention relates to the preparation of functional ion liquid microemulsion, has expanded that this microemulsion applies in above field, especially in separation.
(2) the functional ion liquid aminoethyl butyl imidazole hexafluorophosphate that the present invention relates to, be different from conventional ionic liquid, because containing amido functional group, this molecule is made to have alkalescence, therefore to sour gas, as carbon dioxide has selective absorbing, so to the uptake of carbon dioxide with selectively all to strengthen.Because the price of functional ion liquid is more expensive, and in the microemulsion of preparation, the content of functional ion liquid is few, so financial cost is lower.
(3) dispersion can strengthen Gas-Liquid Absorption process, spontaneous emulsion prepared by the functional ion liquid microemulsion that the present invention relates to, determine that functional ion liquid is adsorbed on profit surface after deliberation, this is conducive to absorbing carbon dioxide gas, and improves the selective of carbon dioxide.So spontaneous emulsion prepared by functional ion liquid microemulsion can strengthen the absorption of carbon dioxide.This does not report in existing document, and patent of the present invention has confirmed that this system can strengthen the absorption rate of carbon dioxide.
Accompanying drawing explanation
Fig. 1 is the ternary phase diagrams of functional ion liquid microemulsion system; I.e. [NH
2ebim] [PF
6]/water/Triton X-100/ n-butanol/cyclohexane system ternary phase diagrams; In figure: Two-phase region-two-phase section, O/W-oil-in-water type, BIP-two-arch tunnel structure, W/O-water-in-oil type.
Be a phase by functional ion liquid aminoethyl butyl imidazole hexafluorophosphate and cyclohexane give, surfactant octyl phenyl polyoxyethylene ether (Triton X-100) and n-butanol are as a phase, and conversion two-phase proportion, drips deionized water gradually.Solution there will be three kinds of situations: (1) increases along with deionized water, and solution can be always transparent.(2) increasing along with deionized water, solution first transparent layering again.(3) when not adding deionized water, solution is stratification state, increasing with deionized water, all the time in stratification state.Ternary phase diagrams can be drawn according to phenomenon, and ternary phase diagrams divides two-phase section and monophase field and micro-emulsion region.Micro-emulsion region is divided into w/o type microemulsion again by the change according to electrical conductivity, two-arch tunnel structure and O/W type microemulsion.
Fig. 2 divides microemulsion type for measuring conductivity variations; I.e. [NH
2ebim] [PF
6the variation diagram that]/water/Triton X-100/ n-butanol/cyclohexane system electrical conductivity increases with R (water accounts for the percentage of system gross mass); In figure: W/O-water-in-oil type, BIP-two-arch tunnel structure, O/W-oil-in-water type.
For Fig. 1 mid point a line, in this ratio by functional ion liquid aminoethyl butyl imidazole hexafluorophosphate, surfactant octyl phenyl polyoxyethylene ether (Triton X-100), the mixing of n-butanol, cyclohexane, drip the change of electrical conductivity in deionized water process gradually, if the change of Fig. 2 electrical conductivity is through linearly rising, slow rising, slowly decline and linearly decline, they are divided into three sections of OA, AB, BC sections.In OA section, define Water-In-Oil (W/O) microemulsion.Be two-arch tunnel structure in AB section.BC section is o/w microemulsion.
The abscissa of this figure is water content (mass percent) in functional ion liquid microemulsion, and ordinate is the electrical conductivity of functional ion liquid microemulsion system.
Fig. 3 is the grain size distribution of the spontaneous emulsion that functional ion liquid microemulsion is formed.
The functional ion liquid microemulsion formed is put in proportion containing after 5-10% methyldiethanolamine solution, forms milky spontaneous emulsion.Adopt nano particle size instrument to analyze the domain size distribution of this spontaneous emulsion system, obtain Fig. 3, the abscissa of this figure is particle diameter, and unit is nanometer, and ordinate is signal strength signal intensity, and the curve obtained is the grading curve of spontaneous emulsion.
Fig. 4 is functional ion liquid microemulsion system strengthening absorbing carbon dioxide flow chart.
With three mouthfuls of round-bottomed flasks of 1L absorber as carbon dioxide, three mouths are respectively used to input carbon dioxide, spontaneous emulsion feed and stirring.The carbon dioxide inputted from gas cylinder is stored as surge tank with the stainless steel cylinder of 1.8L.Absorber and surge tank are placed in water bath with thermostatic control, and set temperature, the temperature difference is at ± 0.1 DEG C.Utilize vavuum pump that air is discharged from absorber.Carbon dioxide is passed into surge tank from gas cylinder through pressure maintaining valve.Carbon dioxide in surge tank is passed into absorber until pressure reaches 0.1MP, ensures to be full of carbon dioxide in absorber.Again the 100ml emulsion system of preparation is loaded in reactor.Starting to stir and arranging agitator revolution is 110-300 rev/min.Along with carbon dioxide is absorbed by absorbent, the pressure drop in absorber, U-shaped pipe differential manometer can produce pressure reduction, until pressure reduction no longer changes, namely close to absorption equilibrium, makes absorption curve.
Description of reference numerals:
1, carbon dioxide steel cylinder; 2, surge tank; 3, water bath with thermostatic control; 4, absorber; 5, vavuum pump; 6, U-shaped pipe differential manometer.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.
The present invention relates to a kind of method adopting functional ion liquid aminoethyl butyl imidazole hexafluorophosphate to prepare functional ion liquid microemulsion, and this microemulsion is dispersed in the aqueous solution of methyl diethanolamine, form spontaneous emulsion, utilize the absorption rate of the emulsion droplets strengthening carbon dioxide disperseed in this spontaneous emulsion.
The present invention adopts functionalized ion liquid to prepare functional ion liquid microemulsion system, and draws ternary phase diagrams, as Fig. 1 for this system.For micro-emulsion region, the mensuration of electrical conductivity is utilized to divide microemulsion type, as Fig. 2.Adopt spontaneous emulsion prepared by functional ion liquid microemulsion, as shown in Figure 3, apply this spontaneous emulsion strengthening absorbing carbon dioxide, to the grain size distribution of spontaneous emulsion its strengthening absorption process realized by the technological process shown in accompanying drawing 4.
The forming process of composition graphs 1 functions ion liquid microemulsion.Be a phase by functional ion liquid and cyclohexane give, surfactant octyl phenyl polyoxyethylene ether (Triton X-100) and n-butanol are as a phase, and conversion two-phase proportion, drips deionized water gradually.Solution there will be three kinds of situations: (1) increases along with deionized water, and solution can be always transparent.(2) increasing along with deionized water, solution first transparent layering again.(3) when not adding deionized water, solution is stratification state, increasing with deionized water, all the time in stratification state.Can draw ternary phase diagrams according to phenomenon, as Fig. 1, and ternary phase diagrams divides two-phase section and monophase field and micro-emulsion region.
The technical scheme of 4 functions ion liquid microemulsion spontaneous emulsion strengthening absorbing carbon dioxide process by reference to the accompanying drawings.When functional ion liquid microemulsion is distributed in the aqueous solution of methyl diethanolamine, after forming spontaneous emulsion, carbon dioxide is passed into surge tank from gas cylinder through pressure maintaining valve, carbon dioxide in surge tank is passed into absorber until pressure reaches 0.1MP, ensures to be full of carbon dioxide in absorber.Again spontaneous for the 100ml of preparation emulsion is injected absorber, start to stir, along with carbon dioxide is absorbed by absorbent, the pressure drop in absorber, U-shaped pipe differential manometer can produce pressure reduction, and when pressure reduction no longer changes, experiment stops.Absorption rate is calculated by pressure difference in the absorber of mensuration pressure gauge display.
Described absorber is the absorber of three mouthfuls of round-bottomed flasks as carbon dioxide of 1L, and three mouths are respectively carbon dioxide import, spontaneous emulsion feed mouth and stirring port.
Described surge tank is the stainless steel cylinder of 1.8L.
Below in conjunction with specific embodiment, the present invention is described further, but protection scope of the present invention is not by the restriction of embodiment.
embodiment 1
Get functionalized ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, the quality of surfactant octyl phenyl polyoxyethylene ether is 0.247g, 3.044g, 3.763g(1:12.3:15.2), be mixed in 100ml beaker, wherein the mass ratio of surfactant and n-butanol is 1.5:1, at 17 DEG C, drip deionized water, until system becomes the transparency liquid that reflection has blue-violet light, namely define microemulsion.
embodiment 2
Get functionalized ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, the quality of surfactant octyl phenyl polyoxyethylene ether is 0.247g, 3.044g, 3.763g(1:12.3:15.2) be mixed in 100ml beaker, wherein the mass ratio of surfactant and n-butanol is 1.8:1, at 17 DEG C, drip deionized water, until system becomes the transparency liquid that reflection has blue-violet light, namely define microemulsion.
embodiment 3
Get functionalized ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, the quality of surfactant octyl phenyl polyoxyethylene ether is 0.247g, 3.044g, 3.763g(1:12.3:15.2) be mixed in 100ml beaker, wherein the mass ratio of surfactant and n-butanol is 1.6:1, at 30 DEG C, drip deionized water, until system becomes the transparency liquid that reflection has blue-violet light, namely define microemulsion.
embodiment 4
Get functional ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, surfactant octyl phenyl polyoxyethylene ether, the quality of n-butanol and water is 0.3g, 2.962g, 3.951g(1:9.9:13.2), 2.367g, 6g prepares functionalized ion liquid microemulsion, get the 3g microemulsion system prepared again, be dissolved in the emulsion system that in the 5%MDEA aqueous solution of 100ml, spontaneous formation is tiny, spontaneous emulsion average grain diameter is 235.1nm, dispersed phase drop in this spontaneous emulsion is utilized to be strengthening mass transfer media, strengthening carbon dioxide absorption, absorption plant as shown in Figure 4, operating condition: absorbed dose of radiation is 100ml, the rotating speed of agitator is 107r/min, operating temperature is 25 DEG C, operating pressure 0.1MPa.Compared to the absorption rate of 5%MDEA aqueous solution absorbing carbon dioxide, form the increase of the dispersion absorbing carbon dioxide of spontaneous emulsion, absorption rate adds original 1.27 times.
embodiment 5
Get functionalized ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, surfactant octyl phenyl polyoxyethylene ether Triton X-100, the quality of n-butanol and water is 0.3g, 2.962g, 3.951g(1:9.9:13.2), 2.367g, 6g prepares functionalized ion liquid microemulsion, get the 6g microemulsion system prepared again, be dissolved in the emulsion system that in the 5%MDEA aqueous solution of 100ml, spontaneous formation is tiny, spontaneous emulsion average grain diameter is 324.6nm, dispersed phase drop in this spontaneous emulsion is utilized to be strengthening mass transfer media, strengthening carbon dioxide absorption, absorption plant as shown in Figure 4, operating condition: absorbed dose of radiation is 100ml, the rotating speed of agitator is 205r/min, operating temperature is 25 DEG C, operating pressure 0.1MPa.Compared to the absorption rate of 5%MDEA aqueous solution absorbing carbon dioxide, form the increase of the dispersion absorbing carbon dioxide of spontaneous emulsion, absorption rate adds original 1.13 times.
embodiment 6
Get functionalized ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, surfactant octyl phenyl polyoxyethylene ether Triton X-100, the quality of n-butanol and water is 0.3g, 2.962g, 3.951g(1:9.9:13.2), 2.367g, 6g prepares functionalized ion liquid microemulsion, get the 3g microemulsion system prepared again, be dissolved in the emulsion system that in the 5%MDEA aqueous solution of 100ml, spontaneous formation is tiny, spontaneous emulsion average grain diameter is 443.8nm, dispersed phase drop in this spontaneous emulsion is utilized to be strengthening mass transfer media, strengthening carbon dioxide absorption, absorption plant as shown in Figure 4, operating condition: absorbed dose of radiation is 100ml, the rotating speed of agitator is 300r/min, operating temperature is 25 DEG C, operating pressure 0.1MPa.Compared to the absorption rate of 5%MDEA aqueous solution absorbing carbon dioxide, form the increase of the dispersion absorbing carbon dioxide of spontaneous emulsion, absorption rate adds original 1.46 times.
embodiment 7
Get functionalized ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, surfactant octyl phenyl polyoxyethylene ether Triton X-100, the quality of n-butanol and water is 0.3g, 2.962g, 3.951g(1:9.9:13.2), 2.367g, 6g prepares functionalized ion liquid microemulsion, get the 3g microemulsion system prepared again, be dissolved in the emulsion system that in the 5%MDEA aqueous solution of 100ml, spontaneous formation is tiny, spontaneous emulsion average grain diameter is 256.1nm, dispersed phase drop in this spontaneous emulsion is utilized to be strengthening mass transfer media, strengthening carbon dioxide absorption, absorption plant as shown in Figure 4, operating condition: absorbed dose of radiation is 100ml, the rotating speed of agitator is 100r/min, operating temperature is 20 DEG C, operating pressure 0.1MPa.Compared to the absorption rate of 10%MDEA aqueous solution absorbing carbon dioxide, form the increase of the dispersion absorbing carbon dioxide of spontaneous emulsion, absorption rate adds original 1.21 times.
embodiment 8
Get functionalized ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, surfactant octyl phenyl polyoxyethylene ether Triton X-100, the quality of n-butanol and water is 0.3g, 2.962g, 3.951g(1:9.9:13.2), 2.367g, 6g prepares functionalized ion liquid microemulsion, get the 3g microemulsion system prepared again, be dissolved in the emulsion system that in the 10%MDEA aqueous solution of 100ml, spontaneous formation is tiny, spontaneous emulsion average grain diameter is 210.6nm, dispersed phase drop in this spontaneous emulsion is utilized to be strengthening mass transfer media, strengthening carbon dioxide absorption, absorption plant as shown in Figure 4, operating condition: absorbed dose of radiation is 100ml, the rotating speed of agitator is 205r/min, operating temperature is 30 DEG C, operating pressure 0.1MPa.Compared to the absorption rate of 5%MDEA aqueous solution absorbing carbon dioxide, form the increase of the dispersion absorbing carbon dioxide of spontaneous emulsion, absorption rate adds original 1.39 times.
embodiment 9
Get functionalized ion liquid aminoethyl butyl imidazole hexafluorophosphate respectively, cyclohexane, the quality of surfactant octyl phenyl polyoxyethylene ether is 0.247g, 2.47g, 3.458g(1:10:14) be mixed in 100ml beaker, wherein the mass ratio of surfactant and n-butanol is 1.7:1, at 30 DEG C, drip deionized water, until system becomes the transparency liquid that reflection has blue-violet light, namely define microemulsion.
Claims (5)
1. a preparation method for functional ion liquid microemulsion, is characterized in that: with functional ion liquid aminoethyl butyl imidazole hexafluorophosphate for polarity prepares functional ion liquid microemulsion mutually, and this microemulsion is dispersed in water, forms spontaneous microemulsion.
2. the preparation method of functional ion liquid microemulsion according to claim 1, is characterized in that: concrete steps are as follows:
(1) microemulsion prepared: with aminoethyl butyl imidazole hexafluorophosphate for polarity phase, take cyclohexane as oil phase, taking octyl phenyl polyoxyethylene ether as surfactant (Triton x-100), take n-butanol as the functional ion liquid microemulsion that cosurfactant prepares containing functional ion liquid;
(2) spontaneous emulsion system: on basis prepared by step (1) functional ion liquid microemulsion, is put into the emulsion dispersion system of average particle size range at 200-500nm of spontaneous formation in the methyl diethanolamine aqueous solution.
3. the preparation method of functional ion liquid microemulsion according to claim 2, is characterized in that: the mass ratio of functional ion liquid aminoethyl butyl imidazole hexafluorophosphate, cyclohexane and surfactant is 1:9.9 ~ 12.3:13.2 ~ 15.2; The mass ratio of surfactant octyl phenyl polyoxyethylene ether and cosurfactant n-butanol is 1.5 ~ 1.8:1.
4. the preparation method of functional ion liquid microemulsion according to claim 2, is characterized in that: in the methyl diethanolamine aqueous solution, the mass concentration scope of methyl diethanolamine is at 5-10%.
5. by a method for the spontaneous emulsion strengthening carbon dioxide absorption of the functional ion liquid microemulsion prepared by claim 1,2,3 or 4, it is characterized in that: adopt above-mentioned obtained spontaneous emulsion strengthening absorption rate of carbon dioxide process as follows:
The three mouthfuls of containers adopted are as the absorber of carbon dioxide, and three mouths are respectively carbon dioxide input port, absorbent charging aperture and stirring port; Store the carbon dioxide inputted from gas cylinder as surge tank with stainless steel cylinder; Absorber and surge tank are placed in water bath with thermostatic control; Utilize vavuum pump that air is discharged from absorber; Carbon dioxide is passed into surge tank from gas cylinder through pressure maintaining valve; Carbon dioxide in surge tank is passed into absorber until pressure reaches 0.1MP, ensures to be full of carbon dioxide in absorber; Loaded in reactor by the spontaneous emulsion system of preparation, starting to stir and arranging agitator revolution is 110-300 rev/min again; Along with carbon dioxide is absorbed by absorbent, the pressure drop in absorber, U-shaped pipe differential manometer can produce pressure reduction, when pressure reduction registration no longer changes, namely close to absorption equilibrium.
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