CN104492370A - Modified montmorillonite carbon dioxide adsorption material and preparation method thereof - Google Patents

Modified montmorillonite carbon dioxide adsorption material and preparation method thereof Download PDF

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CN104492370A
CN104492370A CN201410680679.3A CN201410680679A CN104492370A CN 104492370 A CN104492370 A CN 104492370A CN 201410680679 A CN201410680679 A CN 201410680679A CN 104492370 A CN104492370 A CN 104492370A
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carbon dioxide
montmorillonite
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闫新龙
胡晓燕
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China University of Mining and Technology CUMT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

Abstract

The invention discloses a modified montmorillonite carbon dioxide adsorption material and a preparation method thereof. According to the preparation method, a inorganic intercalation agent is used for intercalation so as to insert an inorganic substance into montmorillonite crystal layers, and increase the specific surface area of montmorillonite. The preparation method comprises following steps: preparation of TiO2 intercalation agent; preparation of SiO2 intercalation agent; preparation of TiO2-SiO2 composite intercalation agent; and preparation of the modified montmorillonite carbon dioxide adsorption material. The preparation method is simple; the specific surface area of the obtained modified montmorillonite carbon dioxide adsorption material ranges from 450 to 500m<2>/g; pore volume ranges from 0.28 to 0.32cm<3>/g; pore diameter ranges from 3 to 5nm; the modified montmorillonite carbon dioxide adsorption material possesses excellent absorption capacity on carbon dioxide; cycling stability is excellent; and compared with other modified molecular sieve porous materials, cost is reduced greatly, the modified montmorillonite carbon dioxide adsorption material is of no toxicity and is harmless, and is capable of satisfying industrial processes, especially carbon dioxide removing on absorption materials.

Description

A kind of modified montmorillonite used carbon dioxide absorbing material and preparation method thereof
Technical field
The invention belongs to collecting carbonic anhydride and storage art, be specifically related to a kind of carbon dioxide absorbing material, particularly modified montmorillonite used carbon dioxide absorbing material of one and preparation method thereof.
Background technology
In recent years, " greenhouse effects " have become one of the most significant environmental problem in the world today.Large quantity research shows, the main cause producing greenhouse effects is directly relevant with a large amount of discharges of greenhouse gases.Greenhouse gases mainly contain the kinds more than 30 such as carbon dioxide, chlorine fluoroalkane, methane, nitrous oxide, ozone, and wherein carbon dioxide is maximum to Gloal Climate Change Impact, and the increase of its concentration is about 55% to the contribution margin of greenhouse effects.The carbon dioxide produced when people use fossil fuel (as coal, oil etc.) in a large number to generate energy or disafforestation and to be burned enters Earth'S atmosphere, the earth is heated up, carbon cycle is unbalance, thus changes the power conversion form of global biosphere.
On September 23rd, 2014, U.N. climate change summit is held in the New York UN Headquarters, and containment climate warming becomes whole world common recognition.Although improve energy use efficiency, energy-saving and emission-reduction, readjust the energy structure and greatly develop regenerative resource, wind energy, water energy and nuclear energy etc., and strengthening the trapping of carbon dioxide and storage (CCS), three kinds of tactful effective combinations are necessary guarantee of carbon dioxide discharge-reduction.But in nearly mid-term, reduce the content of carbon dioxide in air, select the most effectively, the most reliably or the trapping of carbon dioxide, storage and recycling.Therefore, capturing carbon dioxide gas stored and utilize artificially will followingly reduce most economical, the feasible method of greenhouse gas emission, slowing global warming on a large scale.
The carbon dioxide discharged due to thermal power industry accounts for 1/3rd of China's CO2 emission ratio, and the source of generation Relatively centralized, stand in the breach in the current carbon dioxide discharge-reduction direction of China, therefore, the research accounting for the maximum coal fired power plant emission-reduction technology of China's power industry proportion is had important practical significance.
At present, the collecting carbonic anhydride isolation technics of successful Application mainly contains absorption process, membrane separation process and absorption method etc.The alkanolamine compounds that absorption process uses in a large number is MEA, and absorption rate is fast, and technique is comparatively ripe, and in a large number for industrial process such as oil refining, synthetic ammonia, but amines absorption process regeneration energy consumption is higher, and comparatively serious to the corrosion of equipment.Membrane separation process is that the permeability contrast of film to gas with various utilizing polymeric material to make carrys out divided gas flow, industrial for CO 2the membrane material be separated mainly contains acetate fiber, ethyl cellulose, polyphenylene oxide and polysulfones etc.Membrane separation process device is simple, but is generally difficult to obtain high-purity CO 2.Absorption method has that equipment is simple, easy to operate, energy consumption is low, cost is low usually, corrosion-free and pollute, and is beneficial to large-scale application, and therefore, adsorption technology is used for collecting carbonic anhydride and has application prospect, its key is then the exploitation of high-performance absorbent.
Some common solid porous materials, as porous carbon materials, molecular sieve, aluminium oxide, silica gel, metal-organic framework materials and membrane material etc., can with the carbon dioxide removed in flue gas.But above-mentioned most of material is not high to the adsorption capacity of carbon dioxide, selective lower, and cost is higher.The meso-porous titanium dioxide carbon adsorbing material of some organic amine loads, although have, adsorbance is high, good selective, there is heat endurance poor simultaneously, the problems such as cost is higher.
Summary of the invention
The object of the present invention is to provide the modified montmorillonite used carbon dioxide absorbing material of a kind of inorganic substance intercalation, its specific area is large, and the adsorption capacity of carbon dioxide is higher.
Another object of the present invention is to the preparation method providing above-mentioned modified montmorillonite used carbon dioxide absorbing material, its cost is low, and technique is simple, is suitable for suitability for industrialized production.
The object of the invention is to be achieved through the following technical solutions: a kind of preparation method of modified montmorillonite used carbon dioxide absorbing material, comprises following operating procedure:
(1) TiO 2the preparation of intercalator: joined by isopropyl titanate in the hydrochloric acid solution of 1 ~ 2mol/L, obtains titanium colloidal sol, continues stirring 3 ~ 6 hours until solution becomes clarification; The mol ratio of hydrochloric acid and isopropyl titanate is 3 ~ 5:1;
(2) SiO 2the preparation of intercalator: ethyl orthosilicate, 2mol/L hydrochloric acid and ethanol are mixed in following ratio: ethyl orthosilicate 35 ~ 45g, 2mol/L hydrochloric acid 8 ~ 12mL, ethanol 10 ~ 16mL;
(3) TiO 2-SiO 2the preparation of compound swelling agent: intercalator mixing step (1) and (2) obtained respectively, mixed proportion is TiO 2: SiO 2=1/8 ~ 1/12, stirred at ambient temperature 1 ~ 3 hour;
(4) preparation of modified montmorillonite used carbon dioxide absorbing material: be scattered in 1000 ~ 2000g pure water by 10 ~ 20g montmorillonite, adds TiO obtained in step (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 20 ~ 30:1; Mixed solution is stirred 3 ~ 5 hours at 50 ~ 80 DEG C, then centrifugal, washing also at room temperature natural drying; Dried material is placed in Muffle furnace, and roasting 3 ~ 6 hours at 400 ~ 550 DEG C, the sample obtained after cooling is modified montmorillonite used carbon dioxide absorbing material.
Preferably, the mol ratio of described step (1) hydrochloric acid and isopropyl titanate is 4:1.
Preferably, described step (3) TiO 2and SiO 2solution mixed proportion is TiO 2: SiO 2=1/10.
Preferably, the mixed proportion of described step (4) compound swelling agent and montmorillonite is: the calcium carbonate equivalent of compound swelling agent and montmorillonite is 25:1.
According to the modified montmorillonite used carbon dioxide absorbing material that above-mentioned preparation method prepares, described modified montmorillonite used be TiO 2-SiO 2the montmorillonite of compound swelling agent intercalation modifying.
Described modified montmorillonite used specific area is 450 ~ 500m 2/ g, pore volume is 0.28 ~ 0.32cm 3/ g, pore-size distribution is at 3 ~ 5nm.
Operation principle of the present invention:
First the present invention prepares suitable compound swelling agent, by itself and montmorillonite effect, significantly improves the specific area of montmorillonite, thus improves the adsorption capacity of montmorillonite, simultaneously by intercalator and CO 2strong interaction, improve the adsorptive selectivity of montmorillonite.Because this material is inorganic material, better heat stability, and material price used in preparation process is cheap, easily realizes extensive commercial application.
Compared with prior art, the present invention has following advantage:
(1) the sorbing material specific area that obtains of the present invention is higher, can reach 450 ~ 500m 2/ g, pore volume can reach 0.28 ~ 0.32cm 3/ g; This material has higher adsorbance to carbon dioxide, and its adsorbance at least can reach 1.2mmol-CO 2/ g-adsorbent; Nontoxic, non-corrosiveness, cyclical stability is better;
(2) preparation method of the present invention is simple, is easy to realize large-scale production, can effectively reduces industrial process CO 2the cost removed.
Accompanying drawing explanation
Fig. 1 is the x-ray diffractogram of powder of the modified montmorillonite used carbon dioxide absorbing material that embodiment 1 obtains.
Fig. 2 is the low temperature nitrogen Adsorption and desorption isotherms figure of the modified montmorillonite used carbon dioxide absorbing material that embodiment 2 obtains.
Fig. 3 is the graph of pore diameter distribution of the modified montmorillonite used carbon dioxide absorbing material that embodiment 2 obtains.
Fig. 4 be the obtained modified montmorillonite used carbon dioxide absorbing material of embodiment 3 under 273K with the change of relative pressure to CO 2adsorption and desorption isotherms figure.
Fig. 5 be the obtained modified montmorillonite used carbon dioxide absorbing material of embodiment 5 under 273K in adsorption desorption cyclic process to CO 2absorption property resolution chart.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the invention will be further described.
Embodiment 1
(1) 0.06mol isopropyl titanate is added in the hydrochloric acid solution of 90mL 2mol/L, obtains titanium colloidal sol, continue stirring 6 hours until solution becomes clarification, obtained TiO 2intercalator;
(2) by ethyl orthosilicate, hydrochloric acid and ethanol mix in following ratio: ethyl orthosilicate 35g, 2mol/L hydrochloric acid 8mL, ethanol 16mL, obtained SiO 2intercalator;
(3) by the intercalator mixing obtained by step (1) and (2), mixed proportion is TiO 2: SiO 2=1:8, stirred at ambient temperature 1 hour, obtained TiO 2-SiO 2compound swelling agent;
(4) 10g montmorillonite is scattered in 1000g pure water, then adds the TiO that above-mentioned (3) describe 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 20:1; Mixed solution is stirred 3 hours at 50 DEG C, then centrifugal, washing also at room temperature drying.Dried material is placed in Muffle furnace 400 DEG C of roastings 6 hours.
Embodiment 2
(1) 0.03mol isopropyl titanate is joined in the hydrochloric acid solution of 150mL 1mol/L, obtain titanium colloidal sol, continue stirring 3 hours until solution becomes clarification, obtained TiO 2intercalator;
(2) by ethyl orthosilicate, hydrochloric acid and the following ratio of ethanol mix: ethyl orthosilicate 45g, 2mol/L hydrochloric acid 12mL, ethanol 16mL, obtained SiO 2intercalator;
(3) by the intercalator mixing obtained by above-mentioned (1) and (2), mixed proportion is TiO 2: SiO 2=1:12.At room temperature stir 3 hours, obtained TiO 2-SiO 2compound swelling agent;
(4) 20g montmorillonite is scattered in 2000g pure water, then adds the TiO described in above-mentioned (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 30:1; Mixed solution is stirred 3 hours at 50 DEG C, then centrifugal, washing also at room temperature drying.Dried material is placed in Muffle furnace 550 DEG C of roastings 6 hours.
Embodiment 3
(1) 0.05mol isopropyl titanate is joined in the hydrochloric acid solution of 125mL 2mol/L, obtain titanium colloidal sol, continue stirring 4 hours until solution becomes clarification, obtained TiO 2intercalator;
(2) by ethyl orthosilicate, hydrochloric acid and the following ratio of ethanol mix: ethyl orthosilicate 45g, 2mol/L hydrochloric acid 10mL, ethanol 16mL, obtained SiO 2intercalator;
(3) by the intercalator mixing obtained by above-mentioned (1) and (2), mixed proportion is TiO 2: SiO 2=1:12.At room temperature stir 1 hour, obtained TiO 2-SiO 2compound swelling agent;
(4) 20g montmorillonite is scattered in 1500g pure water, then adds the TiO described in above-mentioned (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 25:1; Mixed solution is stirred 3 hours at 80 DEG C, then centrifugal, washing also at room temperature drying.Dried material is placed in Muffle furnace 450 DEG C of roastings 6 hours.
Embodiment 4
(1) 0.03mol isopropyl titanate is joined in the hydrochloric acid solution of 90mL 1mol/L, obtain titanium colloidal sol, continue stirring 4 hours until solution becomes clarification, obtained TiO 2intercalator.
(2) by ethyl orthosilicate, hydrochloric acid and the following ratio of ethanol mix: ethyl orthosilicate 45g, 2mol/L hydrochloric acid 12mL, ethanol 16mL, obtained SiO 2intercalator.
(3) by the intercalator mixing obtained by above-mentioned (1) and (2), mixed proportion is TiO 2: SiO 2=1:10.At room temperature stir 3 hours, obtained TiO 2-SiO 2compound swelling agent.
(4) 20g montmorillonite is scattered in 2000g pure water, then adds the TiO described in above-mentioned (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 30:1.Mixed solution is stirred 3 hours at 50 DEG C, then centrifugal, washing also at room temperature drying.Dried material is placed in Muffle furnace 550 DEG C of roastings 5 hours.
Embodiment 5
(1) 0.05mol isopropyl titanate is joined in the hydrochloric acid solution of 100mL 1.5mol/L, obtain titanium colloidal sol, continue stirring 4 hours until solution becomes clarification, obtained TiO 2intercalator;
(2) by ethyl orthosilicate, hydrochloric acid and the following ratio of ethanol mix: ethyl orthosilicate 35g, 2mol/L hydrochloric acid 8mL, ethanol 10mL, obtained SiO 2intercalator;
(3) by the intercalator mixing obtained by above-mentioned (1) and (2), mixed proportion is TiO 2: SiO 2=1:8.At room temperature stir 1 hour, obtained TiO 2-SiO 2compound swelling agent;
(4) 10g montmorillonite is scattered in 1000g pure water, then adds the TiO described in above-mentioned (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 20:1; Mixed solution is stirred 3 hours at 50 DEG C, then centrifugal, washing also at room temperature drying.Dried material is placed in Muffle furnace 550 DEG C of roastings 3 hours.
Embodiment 6
(1) 0.05mol isopropyl titanate is joined in the hydrochloric acid solution of 100mL 2mol/L, obtain titanium colloidal sol, continue stirring 4 hours until solution becomes clarification, obtained TiO 2intercalator;
(2) by ethyl orthosilicate, hydrochloric acid and the following ratio of ethanol mix: ethyl orthosilicate 40g, 2mol/L hydrochloric acid 10mL, ethanol 12mL, obtained SiO 2intercalator;
(3) by the intercalator mixing obtained by above-mentioned (1) and (2), mixed proportion is TiO 2: SiO 2=1:12; At room temperature stir 1 hour, obtained TiO 2-SiO 2compound swelling agent.
(4) 10g montmorillonite is scattered in 1000g pure water, then adds the TiO described in above-mentioned (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 30:1; Mixed solution is stirred 5 hours at 50 DEG C, then centrifugal, washing also at room temperature drying; Dried material is placed in Muffle furnace 400 DEG C of roastings 5 hours.
Embodiment 7
(1) 0.05mol isopropyl titanate is joined in the hydrochloric acid solution of 125mL 2mol/L, obtain titanium colloidal sol, continue stirring 4 hours until solution becomes clarification, obtained TiO 2intercalator;
(2) by ethyl orthosilicate, hydrochloric acid and the following ratio of ethanol mix: ethyl orthosilicate 45g, 2mol/L hydrochloric acid 8mL, ethanol 10mL, obtained SiO 2intercalator;
(3) by the intercalator mixing obtained by above-mentioned (1) and (2), mixed proportion is TiO 2: SiO 2=1:8; At room temperature stir 3 hours, obtained TiO 2-SiO 2compound swelling agent;
(4) 10g montmorillonite is scattered in 1000g pure water, then adds the TiO described in above-mentioned (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 25:1; Mixed solution is stirred 5 hours at 50 DEG C, then centrifugal, washing also at room temperature drying.Dried material is placed in Muffle furnace 400 DEG C of roastings 6 hours.
Embodiment 8
(1) 0.05mol isopropyl titanate is joined in the hydrochloric acid solution of 75mL 2mol/L, obtain titanium colloidal sol, continue stirring 6 hours until solution becomes clarification, obtained TiO 2intercalator;
(2) by ethyl orthosilicate, hydrochloric acid and the following ratio of ethanol mix: ethyl orthosilicate 45g, 2mol/L hydrochloric acid 12mL, ethanol 14mL, obtained SiO 2intercalator;
(3) by the intercalator mixing obtained by above-mentioned (1) and (2), mixed proportion is TiO 2: SiO 2=1:8.At room temperature stir 3 hours, obtained TiO 2-SiO 2compound swelling agent;
(4) 20g montmorillonite is scattered in 2000g pure water, then adds the TiO described in above-mentioned (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 20:1; Mixed solution is stirred 5 hours at 50 DEG C, then centrifugal, washing also at room temperature drying; Dried material is placed in Muffle furnace 550 DEG C of roastings 4 hours.
The performance of modified montmorillonite used carbon dioxide absorbing material prepared by the present invention is as follows:
Fig. 1 is the powder product X-ray diffractogram of embodiment 1; As can be seen from Figure, the characteristic peak of to be 7.5 degree be at 2 θ angles montmorillonite before modified, disappears through inorganic intercalated this characteristic peak modified.This is because the oxide intercalator of different size distributes caused between montmorillonite layer.
Fig. 2 is the low temperature nitrogen Adsorption and desorption isotherms figure of the product of embodiment 2; As seen from the figure, obtained modified montmorillonite usedly show as typical IV type adsorption isotherm, there is the delayed winding of H4 type, show that obtained material is meso-hole structure.
Fig. 3 is the graph of pore diameter distribution of the product of embodiment 2; The mesoporous pore size of obtained material is comparatively homogeneous, concentrates on 3.9nm.The specific area being calculated product by this adsorpting data is 450m 2/ g, pore volume is 0.28cm 3/ g.。
Fig. 4 be the product of embodiment 3 under 273K condition with the change of relative pressure to CO 2adsorption and desorption isotherms figure; The curve that in figure, black color dots is formed represents adsorption process, and the curve that white point is formed represents desorption process.As seen from Figure 4, along with the increase of adsorptive pressure, obtained sorbing material is to CO 2adsorbance rise gradually, under 1atm, this material is to CO 2adsorbance close to 1.2mmol/g.And the curve shape of epirelief also show this material to CO 2molecule has good compatibility.Desorption curve shows that this material is under the condition reducing pressure, can easily desorption CO 2, be beneficial to the regeneration of this material.
Fig. 5 be the product of embodiment 5 under 273K in adsorption desorption cyclic process to CO 2absorption property test result; Its adsorption process is at the pure CO of 273K 2carry out under atmosphere, desorption process is at the same temperature, vacuumizes process 30 minutes, again adsorbs subsequently.Said process can repeat 6 times, to CO 2adsorbance remain stable.

Claims (6)

1. a preparation method for modified montmorillonite used carbon dioxide absorbing material, is characterized in that, comprises the following steps:
(1) TiO 2the preparation of intercalator: joined by isopropyl titanate in the hydrochloric acid solution of 1 ~ 2mol/L, obtains titanium colloidal sol, continues stirring 3 ~ 6 hours until solution becomes clarification; The mol ratio of hydrochloric acid and isopropyl titanate is 3 ~ 5:1;
(2) SiO 2the preparation of intercalator: ethyl orthosilicate, 2mol/L hydrochloric acid and ethanol are mixed in following ratio: ethyl orthosilicate 35 ~ 45g, 2mol/L hydrochloric acid 8 ~ 12mL, ethanol 10 ~ 16mL;
(3) TiO 2-SiO 2the preparation of compound swelling agent: intercalator mixing step (1) and (2) obtained respectively, mixed proportion is TiO 2: SiO 2=1/8 ~ 1/12, stirred at ambient temperature 1 ~ 3 hour;
(4) preparation of modified montmorillonite used carbon dioxide absorbing material: be scattered in 1000 ~ 2000g pure water by 10 ~ 20g montmorillonite, adds TiO obtained in step (3) 2-SiO 2compound swelling agent, mixed proportion is the calcium carbonate equivalent of compound swelling agent and montmorillonite is 20 ~ 30:1; Mixed solution is stirred 3 ~ 5 hours at 50 ~ 80 DEG C, then centrifugal, washing also at room temperature natural drying; Dried material is placed in Muffle furnace, and roasting 3 ~ 6 hours at 400 ~ 550 DEG C, the sample obtained after cooling is modified montmorillonite used carbon dioxide absorbing material.
2. preparation method according to claim 1, is characterized in that, the mol ratio of described step (1) hydrochloric acid and isopropyl titanate is 4:1.
3. preparation method according to claim 1, is characterized in that, described step (3) TiO 2and SiO 2solution mixed proportion is TiO 2: SiO 2=1/10.
4. preparation method according to claim 1, is characterized in that, described step (4) compound swelling agent and montmorillonite mixed proportion are: the calcium carbonate equivalent of compound swelling agent and montmorillonite is 25:1.
5. the modified montmorillonite used carbon dioxide absorbing material that preparation method prepares according to any one of Claims 1 to 4, is characterized in that, described modified montmorillonite used be TiO 2-SiO 2the montmorillonite of compound swelling agent intercalation modifying.
6. modified montmorillonite used carbon dioxide absorbing material according to claim 5, is characterized in that, described modified montmorillonite used specific area is 450 ~ 500m 2/ g, pore volume is 0.28 ~ 0.32cm 3/ g, pore-size distribution is at 3 ~ 5nm.
CN201410680679.3A 2014-11-24 2014-11-24 Modified montmorillonite carbon dioxide adsorption material and preparation method thereof Pending CN104492370A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109482140A (en) * 2018-12-22 2019-03-19 北京工业大学 The preparation method and application of aluminium pillared montmorillonite load Na-Nb compound adsorbent
KR20220146871A (en) * 2021-04-26 2022-11-02 한국전력공사 Composition for carbon dioxide sorbent, manufacturing method for carbon dioxide sorbent using the same, and carbon dioxide sorbent manufactured using the same
KR102562021B1 (en) 2021-04-26 2023-08-01 한국전력공사 Composition for carbon dioxide sorbent, manufacturing method for carbon dioxide sorbent using the same, and carbon dioxide sorbent manufactured using the same
CN115582105A (en) * 2022-09-30 2023-01-10 攀钢集团攀枝花钢铁研究院有限公司 Method for preparing CO by modifying titanium-containing blast furnace slag 2 Method for coupling mineralization of capture material
CN115582105B (en) * 2022-09-30 2024-02-02 攀钢集团攀枝花钢铁研究院有限公司 Modification preparation of CO from titanium-containing blast furnace slag 2 Method for coupling mineralization of trapping material
KR102627703B1 (en) * 2023-04-13 2024-01-23 한국미래기술(주) Carbon dioxide scavenger for dry type and manufacturing method thereof

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