CN109019593A - A kind of discarded ion exchange resin matrix activated carbon and the preparation method and application thereof - Google Patents
A kind of discarded ion exchange resin matrix activated carbon and the preparation method and application thereof Download PDFInfo
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- CN109019593A CN109019593A CN201811092031.9A CN201811092031A CN109019593A CN 109019593 A CN109019593 A CN 109019593A CN 201811092031 A CN201811092031 A CN 201811092031A CN 109019593 A CN109019593 A CN 109019593A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
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- 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
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- 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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
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- 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
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
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- B01D2257/504—Carbon dioxide
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- 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
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a kind of preparation methods of discarded ion exchange resin matrix activated carbon, are related to waste utilization and gas absorption field.The following steps are included: S1, discarded ion exchange resin is immersed in anhydrous low-carbon alcohol, pretreated discarded ion exchange resin successively is obtained through pickling, washing, drying later；S2, pretreated discarded ion exchange resin is subjected to carbonization treatment in protection gas, obtains carbonized product；S3, carbonized product be placed in potassium hydroxide solution impregnate, stood, dry after obtain mixture；Mixture is placed in protection gas and is activated, later successively through cooling, wash, be dried to obtain active carbon.This method provides a kind of processing method of new environmental protection to discard ion exchange resin.Simultaneously the invention also discloses the discarded ion exchange resin matrix activated carbon being prepared using above-mentioned preparation method and application, which has good CO2Absorption property, and cost is extremely low.
Description
Technical field
The present invention relates to wasted resources and gas-adsorption technique field more particularly to a kind of discarded ion exchange resin
Matrix activated carbon and the preparation method and application thereof.
Background technique
The use of global fossil fuel causes a large amount of CO2Discharge have become and threaten people to cause greenhouse effects
One of the principal element of class sustainable development.China's energy resource structure is that maximum carbon dioxide is arranged in the world based on coal
State is put, cutting down carbon dioxide gas discharge becomes the hot spot of social concerns with mitigation of climate change.
Carbon capture and storage refer to CO caused by big power station2It collects, and is stored with various methods to keep away
Exempt from it and be discharged into one of atmosphere technology, pre-combustion capture can be divided into, trapped in burning and post-combustion capture.This technology is
Extensive to reduce greenhouse gas emission, slowing global warming is most economical, feasible method.
Post-combustion capture, which refers to, traps CO in the flue gas of burning and exhausting2, nowadays common CO2Isolation technics mainly has suction
Receipts method, absorption method, low temperature processing, membrane separation process and microorganism/algae partition method, wherein absorption method because its rate of adsorption is fast,
The factors such as simple, corrosion-free, alternative raw material are numerous are desorbed to be valued by people.Common adsorbent has carbonaceous more
Porous materials, zeolite, metal oxide, metal organic framework compound etc..Zeolite, metal oxide and metal organic frame chemical combination
The adsorbent costs such as object are higher, are a problems for limiting absorption method large-scale application.For this problem, with agricultural or industry
Waste is that the active carbon of precursor preparation can effectively reduce cost as adsorbent.
Ion exchange resin has wide application in the industry, but resin will be discarded after 3-5, discards ion
Exchanger resin is not degradable, and processing is difficult.The spheric active carbon that discarded ion exchange resin is used to prepare is a kind of novel more
Hole dielectric material, with structure uniformly, high-carbon content, spherical-like morphology can be saved and biggish in charing and activation process
The advantages that specific surface area.Currently, amberlite aliphatic radical spheric active carbon yet there are no it in CO2Adsorb the application of aspect.
Summary of the invention
(1) technical problems to be solved
In order to solve the above problem of the prior art, the present invention provides a kind of system of discarded ion exchange resin matrix activated carbon
Preparation Method.This method provides a kind of processing method of new environmental protection to discard ion exchange resin, solves discarded ion and hands over
The difficult problem of resin terminal processing is changed, reduces influence of the discarded ion exchange resin to environment, and easy to operate, is easy to control
System.
The present invention provides a kind of discarded ion exchange resin matrix activated carbon, which has good CO2Absorption property,
And the raw material for preparing of the active carbon is discarded ion exchange resin, and cost is extremely low.
(2) technical solution
In order to achieve the above object, the main technical schemes that the present invention uses include:
A kind of preparation method of discarded ion exchange resin matrix activated carbon, comprising the following steps:
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in anhydrous low-carbon alcohol, later
It removes extra low-carbon alcohol solution and carries out pickling, be then washed to neutral and drying, obtain pretreated discarded ion exchange resin；
The preparation of S2, carbonized product: pretreated discarded ion exchange resin is heated up in the case where protecting gas atmosphere carbonization, is obtained
To carbonized product；
The preparation of S3, active carbon: carbonized product being placed in potassium hydroxide solution and is impregnated, and takes out the carbon of impregnation
Change product, obtains mixture after dry；By mixture be again placed in protection gas atmosphere in heat up activation, later successively through cooling,
It washs, be dried to obtain active carbon.
A kind of improvement of preparation method as the discarded ion exchange resin matrix activated carbon of the present invention, in step S3, activation
Temperature is 700-1000 DEG C, activation time 1-3h.
A kind of improvement of preparation method as the discarded ion exchange resin matrix activated carbon of the present invention, in step S3, mixing
The weight ratio of carbonized product and potassium hydroxide is 0.5~2.5: 1 in object.
A kind of improvement of preparation method as the discarded ion exchange resin matrix activated carbon of the present invention, in step S2, carbonization
Temperature is 800-1000 DEG C, carbonization time 1-2h.
A kind of improvement of preparation method as the discarded ion exchange resin matrix activated carbon of the present invention, step S2, in S3
Heating rate is 5-10 DEG C/min.
A kind of improvement of preparation method as the discarded ion exchange resin matrix activated carbon of the present invention, in step S1, in nothing
Soaking time in water low-carbon alcohols is no less than for 24 hours；Anhydrous low-carbon alcohol is one or more of dehydrated alcohol/methanol/propyl alcohol.
A kind of improvement of preparation method as the discarded ion exchange resin matrix activated carbon of the present invention, in step S1, pickling
It is that the hydrochloric acid for being 3%-8% with concentration is washed；Preferably, pickling is that the hydrochloric acid for being 5% with concentration is washed.
A kind of discarded ion exchange resin matrix activated carbon, ion exchange resin matrix activated carbon are handed over using above-mentioned discarded ion
The preparation method for changing resin matrix activated carbon is prepared.
A kind of active carbon is in CO absorption2On application, active carbon be above-mentioned discarded ion exchange resin matrix activated carbon.
(3) beneficial effect
The beneficial effects of the present invention are:
1, by the way that discarded ion exchange resin to be immersed in dehydrated alcohol, redundant solution is removed later and carries out pickling, is removed
Metal, water solubility and oil soluble impurity on discarded ion exchange resin have been removed, influence of the impurity to activated carbon product is reduced.
2, by being carbonized to discarded ion exchange resin, other than carbon in discarded ion exchange resin hydrogen,
The other elements such as oxygen, nitrogen and impurity are removed, i.e., polymer substance are heated, and reduce these non-carbon elements.It had been carbonized
Cheng Zhong, the link between molecular resin are broken, and resin disintegrates；Later carbon atom be constantly cyclized, aromatisation, make oxygen, hydrogen, nitrogen etc.
Atom is constantly reduced, and generates the pyrolysis product of rich carbon.
3, by means of being activated to carbonized product using potassium hydroxide as activator, potassium hydroxide and carbonization are produced
Carbon reaction in object, etches away part carbon therein, and the salt of generation and extra potassium hydroxide are washed away using washing,
There is hole in the position being etched, and the specific surface area of active carbon and hole, which hold, to increase.Meanwhile using potassium hydroxide to carbonized product into
Row activation, it is suppressed that the generation of tar improves reaction yield.
4, the present invention provides a kind of preparation methods of discarded ion exchange resin matrix activated carbon, and this method is to discard ion
Exchanger resin is that raw material prepare active carbon, provides a kind of processing method of new environmental protection, solution to discard ion exchange resin
The problem for discarded ion exchange resin terminal processes hardly possible of having determined reduces influence of the discarded ion exchange resin to environment, and grasps
Make simply, it is easily controllable.
5, the present invention provides a kind of discarded ion exchange resin matrix activated carbon, which has good CO2Absorption
Performance, and the raw material for preparing of the active carbon is discarded ion exchange resin, and cost is extremely low.
Specific embodiment
In order to preferably explain the present invention, in order to understand, by specific embodiment, the present invention is described in detail.
The present invention provides a kind of discarded ion exchange resin matrix activated carbons and the preparation method and application thereof comprising following
Step:
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in anhydrous low-carbon alcohol for 24 hours,
After removing redundant solution, then the salt acid elution for being 3%-8% with concentration is handled to neutrality and is done by deionized water
It is dry, obtain pretreated discarded ion exchange resin.
The preparation of S2, carbonized product: by pretreated discarded ion exchange resin in the case where protecting gas atmosphere, with 5-10 DEG C/
The heating rate of min is heated to 800-1000 DEG C, and keeps the temperature 1-2h, obtains carbonized product.
The preparation of S3, active carbon: being 0.5~2.5: 1 according to the weight ratio of carbonized product and potassium hydroxide, by carbonized product
It is placed in potassium hydroxide solution and is impregnated, stand 12h, be dried to obtain mixture；Mixture is placed in protection gas atmosphere, with
The heating rate of 5-10 DEG C/min is heated to 700-1000 DEG C, and keeps the temperature 1-3h, is cooled to room temperature later, washed to neutral,
And be dried, obtain activated carbon product.
Compared with prior art, the present invention provides a kind of preparation methods of discarded ion exchange resin matrix activated carbon, should
Method prepares active carbon using discarded ion exchange resin as raw material, provides a kind of new environmental protection to discard ion exchange resin
Processing method, solve the problems, such as that discarded ion exchange resin terminal processes are difficult, reduce discarded ion exchange resin to ring
The influence in border, it is easy to operate, it is easily controllable.The present invention also provides a kind of discarded ion exchange resin matrix activated carbons simultaneously, should
Active carbon has good CO2Absorption property, and the raw material for preparing of the active carbon is discarded ion exchange resin, cost pole
It is low.
Embodiment 1
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in dehydrated alcohol for 24 hours, is gone
After redundant solution, then the salt acid elution for being 5% with concentration is handled to neutrality and is dried by deionized water, obtained
Pretreated discarded ion exchange resin.
The preparation of S2, carbonized product: by pretreated discarded ion exchange resin in N2Under atmosphere, with the liter of 5 DEG C/min
Warm rate is heated to 800 DEG C, and keeps the temperature 1h, obtains carbonized product.
The preparation of S3, active carbon: it is 1.5 according to the weight ratio of carbonized product and potassium hydroxide, carbonized product is placed in hydrogen
It is impregnated in potassium oxide solution, stands 12h, be dried to obtain mixture；Mixture is placed in N2In atmosphere, with 5 DEG C/min's
Heating rate is heated to 900 DEG C, and keeps the temperature 2h, is cooled to room temperature later, washed to neutral, and is dried, and obtains activity
Charcoal product.
The specific surface area of the active carbon is 987.20m2/ g, Kong Rongwei 0.49mL/g, the adsorbance of carbon dioxide are
81.22mg/g。
Embodiment 2
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in dehydrated alcohol for 24 hours, is gone
After redundant solution, then the salt acid elution for being 5% with concentration is handled to neutrality and is dried by deionized water, obtained
Pretreated discarded ion exchange resin.
The preparation of S2, carbonized product: by pretreated discarded ion exchange resin in N2Under atmosphere, with the liter of 5 DEG C/min
Warm rate is heated to 800 DEG C, and keeps the temperature 1h, obtains carbonized product.
The preparation of S3, active carbon: it is 1.5 according to the weight ratio of carbonized product and potassium hydroxide, carbonized product is placed in hydrogen
It is impregnated in potassium oxide solution, stands 12h, be dried to obtain mixture；Mixture is placed in N2In atmosphere, with 5 DEG C/min's
Heating rate is heated to 800 DEG C, and keeps the temperature 2.5h, is cooled to room temperature later, washed to neutral, and is dried, and is lived
Property charcoal product.
The specific surface area of the active carbon is 896.73m2/ g, Kong Rongwei 0.47mL/g, the adsorbance of carbon dioxide are
76.99mg/g。
Embodiment 3
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in dehydrated alcohol for 24 hours, is gone
After redundant solution, then the salt acid elution for being 5% with concentration is handled to neutrality and is dried by deionized water, obtained
Pretreated discarded ion exchange resin.
The preparation of S2, carbonized product: by pretreated discarded ion exchange resin in N2Under atmosphere, with the liter of 8 DEG C/min
Warm rate is heated to 900 DEG C, and keeps the temperature 1.5h, obtains carbonized product.
The preparation of S3, active carbon: it is 2 according to the weight ratio of carbonized product and potassium hydroxide, carbonized product is placed in hydrogen-oxygen
Change and impregnated in potassium solution, stands 12h, be dried to obtain mixture；Mixture is placed in N2In atmosphere, with the liter of 8 DEG C/min
Warm rate is heated to 800 DEG C, and keeps the temperature 2h, is cooled to room temperature later, washed to neutral, and is dried, and obtains active carbon
Product.
The specific surface area of the active carbon is 801.73m2/ g, Kong Rongwei 0.41mL/g, the adsorbance of carbon dioxide are
75.45mg/g。
Embodiment 4
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in dehydrated alcohol for 24 hours, is gone
After redundant solution, then the salt acid elution for being 5% with concentration is handled to neutrality and is dried by deionized water, obtained
Pretreated discarded ion exchange resin.
The preparation of S2, carbonized product: by pretreated discarded ion exchange resin in N2Under atmosphere, with the liter of 5 DEG C/min
Warm rate is heated to 800 DEG C, and keeps the temperature 1h, obtains carbonized product.
The preparation of S3, active carbon: it is 1.5 according to the weight ratio of carbonized product and potassium hydroxide, carbonized product is placed in hydrogen
It is impregnated in potassium oxide solution, stands 12h, be dried to obtain mixture；Mixture is placed in N2In atmosphere, with 5 DEG C/min's
Heating rate is heated to 900 DEG C, and keeps the temperature 2.5h, is cooled to room temperature later, washed to neutral, and is dried, and is lived
Property charcoal product.
The specific surface area of the active carbon is 853.80m2/ g, Kong Rongwei 0.31mL/g, the adsorbance of carbon dioxide are
76.99mg/g。
Embodiment 5
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in dehydrated alcohol for 24 hours, is gone
After redundant solution, then the salt acid elution for being 5% with concentration is handled to neutrality and is dried by deionized water, obtained
Pretreated discarded ion exchange resin.
The preparation of S2, carbonized product: by pretreated discarded ion exchange resin in N2Under atmosphere, with the liter of 5 DEG C/min
Warm rate is heated to 800 DEG C, and keeps the temperature 1h, obtains carbonized product.
The preparation of S3, active carbon: it is 1.5 according to the weight ratio of carbonized product and potassium hydroxide, carbonized product is placed in hydrogen
It is impregnated in potassium oxide solution, stands 12h, be dried to obtain mixture；Mixture is placed in N2In atmosphere, with 5 DEG C/min's
Heating rate is heated to 800 DEG C, and keeps the temperature 1.5h, is cooled to room temperature later, washed to neutral, and is dried, and is lived
Property charcoal product.
The specific surface area of the active carbon is 827.94m2/ g, Kong Rongwei 0.42mL/g, the adsorbance of carbon dioxide are
81.24mg/g。
Embodiment 6
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in dehydrated alcohol for 24 hours, is gone
After redundant solution, then the salt acid elution for being 5% with concentration is handled to neutrality and is dried by deionized water, obtained
Pretreated discarded ion exchange resin.
The preparation of S2, carbonized product: by pretreated discarded ion exchange resin in N2Under atmosphere, with the liter of 5 DEG C/min
Warm rate is heated to 800 DEG C, and keeps the temperature 1h, obtains carbonized product.
The preparation of S3, active carbon: it is 1.5 according to the weight ratio of carbonized product and potassium hydroxide, carbonized product is placed in hydrogen
It is impregnated in potassium oxide solution, stands 12h, be dried to obtain mixture；Mixture is placed in N2In atmosphere, with 5 DEG C/min's
Heating rate is heated to 800 DEG C, and keeps the temperature 2h, is cooled to room temperature later, washed to neutral, and is dried, and obtains activity
Charcoal product.
The specific surface area of the active carbon is 929.82m2/ g, Kong Rongwei 0.53mL/g, the adsorbance of carbon dioxide are
77.04mg/g。
In above-mentioned each embodiment,
In step S2, the specific surface area of activated carbon product prepared by the carbonized product that is obtained within the scope of the carbonization temperature
And Kong Rong great, and the adsorbance of carbon dioxide is higher.
In step S3, carbonized product is activated using potassium hydroxide, wherein the dipping of potassium hydroxide and carbonized product
It is 0.5-2.5 by the weight ratio of control carbonized product and potassium hydroxide, by carbon than being the important parameter for influencing Properties of Activated Carbon
Change product, which is placed in potassium hydroxide solution, to be impregnated, and obtained activated carbon product has CO2Absorption property.
It is to be appreciated that describing the skill simply to illustrate that of the invention to what specific embodiments of the present invention carried out above
Art route and feature, its object is to allow those skilled in the art to can understand the content of the present invention and implement it accordingly, but
The present invention is not limited to above-mentioned particular implementations.All various changes made within the scope of the claims are repaired
Decorations, should be covered by the scope of protection of the present invention.
Claims (9)
1. a kind of preparation method of discarded ion exchange resin matrix activated carbon, which comprises the following steps:
The pretreatment of S1, discarded ion exchange resin: discarded ion exchange resin is immersed in anhydrous low-carbon alcohol, is removed later
Extra low-carbon alcohols carry out pickling, are then washed to neutral and drying, obtain pretreated discarded ion exchange resin；
The preparation of S2, carbonized product: pretreated discarded ion exchange resin is heated up in the case where protecting gas atmosphere carbonization, obtains carbon
Change product；
The preparation of S3, active carbon: carbonized product being placed in potassium hydroxide solution and is impregnated, and the carbonization for taking out impregnation produces
Object obtains mixture after dry；By mixture be again placed in protection gas atmosphere in heat up activation, later successively through cooling, washing,
It is dried to obtain active carbon.
2. the preparation method of discarded ion exchange resin matrix activated carbon according to claim 1, it is characterised in that:
In step S3, the activation temperature is 700-1000 DEG C, and the activation time is 1-3h.
3. the preparation method of discarded ion exchange resin matrix activated carbon according to claim 1, it is characterised in that:
In step S3, the weight ratio of carbonized product and potassium hydroxide is 0.5~2.5: 1 in the mixture.
4. the preparation method of discarded ion exchange resin matrix activated carbon according to claim 1, it is characterised in that:
In step S2, the carburizing temperature is 800-1000 DEG C, and the carbonization time is 1-2h.
5. the preparation method of discarded ion exchange resin matrix activated carbon according to claim 1, it is characterised in that:
Heating rate in step S2, S3 is 5-10 DEG C/min.
6. the preparation method of discarded ion exchange resin matrix activated carbon according to claim 1, it is characterised in that:
In step S1, the soaking time in the anhydrous low-carbon alcohol is no less than for 24 hours；
The anhydrous low-carbon alcohol is one or more of dehydrated alcohol/methanol/propyl alcohol.
7. the preparation method of discarded ion exchange resin matrix activated carbon according to claim 1, it is characterised in that:
In step S1, the pickling is that the hydrochloric acid for being 3%-8% with concentration is washed；
Preferably, the pickling is that the hydrochloric acid for being 5% with concentration is washed.
8. a kind of discarded ion exchange resin matrix activated carbon, it is characterised in that: the ion exchange resin matrix activated carbon is using power
Benefit requires the preparation method of 1 to 7 described in any item discarded ion exchange resin matrix activated carbons to be prepared.
9. a kind of active carbon is in CO absorption2On application, it is characterised in that: the active carbon be it is according to any one of claims 8 discard from
Sub-exchange resin matrix activated carbon.
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Cited By (5)
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| CN110182797A (en) * | 2019-03-19 | 2019-08-30 | 杭州电子科技大学 | A kind of preparation method of the new modified absorbent charcoal material for capacitive deionization technology |
| CN114408920A (en) * | 2022-03-15 | 2022-04-29 | 清华大学 | Solid waste recycling method for preparing aperture-adjustable activated carbon by using waste membrane material and product thereof |
| CN114620723A (en) * | 2020-12-10 | 2022-06-14 | 中国科学院大连化学物理研究所 | Preparation method of strong-acid ion exchange resin-based carbon spheres |
| CN114735694A (en) * | 2022-05-13 | 2022-07-12 | 上海保耐舒新材料技术有限公司 | Preparation method of inorganic nano sol high-temperature activated ion exchange resin |
| CN115957730A (en) * | 2023-01-04 | 2023-04-14 | 苏州西热节能环保技术有限公司 | Preparation method of plate-type material for air direct carbon capture |
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