CN103007690A - CO2 absorbent and preparation method thereof - Google Patents

CO2 absorbent and preparation method thereof Download PDF

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Publication number
CN103007690A
CN103007690A CN2013100169918A CN201310016991A CN103007690A CN 103007690 A CN103007690 A CN 103007690A CN 2013100169918 A CN2013100169918 A CN 2013100169918A CN 201310016991 A CN201310016991 A CN 201310016991A CN 103007690 A CN103007690 A CN 103007690A
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absorbent
metal oxide
organic amine
reactor
composite absorber
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胡庚申
姚蔓莉
罗孟飞
冯星星
董艳艳
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Zhejiang Normal University CJNU
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Zhejiang Normal University CJNU
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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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

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Abstract

The invention relates to a CO2 absorbent and a preparation method thereof. The absorbent is composed of organic amine and alkali metal oxide in a mass ratio of (0.01-100):1. The preparation method comprises the following steps: dissolving the organic amine in water, adding the alkali metal oxide, and maximally dispersing the metal oxide in the water in a suspension state by ultrasonic or stirring, thereby obtaining the product. The absorbent has higher trapping property for CO2.

Description

A kind of CO 2Absorbent and preparation method thereof
Technical field
The present invention relates to a kind of CO 2Absorbent and preparation method thereof.
Background technology
Because CO 2The greenhouse effects of gas, CO 2Capturing technology more and more come into one's own common CO 2The mesoporous material of absorbent By Amine Solutions, metal oxide and load organic amine etc.By Amine Solutions has CO 2The advantage that absorbent properties are high, then its shortcoming is that By Amine Solutions has corrosivity, corrosion is used for catching CO easily 2Container; The shortcoming of solid metal oxide is lower for catching performance, and this is owing to CO under the normal temperature 2Only absorption or only react with the surface of metal oxide.Therefore design and develop a kind of low corrosion but have high CO 2The absorbent that catches performance has great importance.
Summary of the invention
The technical problem to be solved in the present invention is to overcome By Amine Solutions to have corrosivity, and metal oxide CO 2Catch the low deficiency of performance, provide a kind of in conjunction with By Amine Solutions and the metal oxide CO of advantage separately 2Absorbent and preparation method thereof.
For solving this technical problem, the technical solution used in the present invention is:
A kind of CO 2Absorbent is characterized in that: this absorbent is comprised of organic amine and alkaline metal oxide, and the mass ratio of organic amine and alkaline metal oxide is 0.01～100:1.
Preferably the mass ratio of organic amine and metal oxide is 1:1.
Described organic amine concentration is 0.0125%～1.25%.
The preparation method of this absorbent is: a certain amount of organic amine is dissolved in the water, then adds a certain amount of alkaline metal oxide, adopt ultrasonic or stir with metal oxide as far as possible suspended dispersed in water, make organic amine-metal oxide absorbent.
Described organic amine is monoethanolamine, diethanol amine, N methyldiethanol amine (MDEA), piperazine, ethylenediamine, diethylenetriamine, triethylene tetramine, TEPA, polymine etc.
Described alkaline metal oxide is industrial production or the naturally occurring magnesia of nature, calcium oxide, barium monoxide, beryllium oxide etc.
Adopt technique scheme, in the aqueous systems of organic amine-metal oxide coexistence, since the existence of organic amine, logical CO 2After, CO 2At first react with organic amine, produce ammonium cation and bicarbonate ion; Then the ammonium cation reacts with metal oxide, generates metal ion and organic amine.Experiment is proof also, if there is not the existence of organic amine, and metal oxide solid or very difficult and CO in water 2React.So whole reaction can be expressed as metal oxide and CO 2And water reaction production metal ion and bicarbonate ion, organic amine has played " catalyst " in whole reaction, and namely organic amine is promoter, because the facilitation of organic amine, alkaline metal oxide and CO 2Stoichiometric proportion with 1:2 reacts, so it catches CO 2Ability significantly improve.In reaction system, generally only need the organic amine of low concentration, can reduce to a certain extent organic amine to the corrosivity of reaction vessel, the while is owing to chemical stability, low-corrosiveness and the economy of metal oxide, so the present invention is at CO 2The seizure aspect has broad application prospects.
Description of drawings
Fig. 1 .CO 2The absorption reaction device schematic diagram.
The specific embodiment
Below in conjunction with embodiment the present invention is made and to further specify, but the present invention is not limited to these embodiment.
Embodiment 1:
The preparation of organic amine-metal oxide composite absorber: organic amine N methyldiethanol amine (MDEA) 0.05g is dissolved in the 400ml water, then add 5g alkaline metal oxide magnesia, ultrasonic 10 minutes, with magnesia equably suspended dispersed in the MDEA aqueous solution, make the MDEA-MgO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber 40.5ml that packs in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 2:
The preparation of organic amine-metal oxide composite absorber: organic amine N methyldiethanol amine (MDEA) 5g is dissolved in the 400ml water, then add 5g alkaline metal oxide magnesia, ultrasonic 10 minutes, with magnesia equably suspended dispersed in the MDEA aqueous solution, make the MDEA-MgO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 3:
The preparation of organic amine-metal oxide composite absorber: organic amine N methyldiethanol amine (MDEA) 5g is dissolved in the 400ml water, then add 2g alkaline metal oxide magnesia, stirred 10 minutes, with magnesia equably suspended dispersed in the MDEA aqueous solution, make the MDEA-MgO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 4:
The preparation of organic amine-metal oxide composite absorber: organic amine N methyldiethanol amine (MDEA) 5g is dissolved in the 400ml water, then add 1g alkaline metal oxide magnesia, stirred 10 minutes, with magnesia equably suspended dispersed in the MDEA aqueous solution, make the MDEA-MgO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 5:
The preparation of organic amine-metal oxide composite absorber: organic amine N methyldiethanol amine (MDEA) 5g is dissolved in the 400ml water, then add 0.05g alkaline metal oxide magnesia, stirred 10 minutes, with magnesia equably suspended dispersed in the MDEA aqueous solution, make the MDEA-MgO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 6:
The preparation of organic amine-metal oxide composite absorber: organic amine monoethanolamine (MEA) 5g is dissolved in the 400ml water, then add 2g alkaline metal oxide calcium oxide, stirred 10 minutes, with calcium oxide equably suspended dispersed in the MEA aqueous solution, make the MEA-CaO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 7:
The preparation of organic amine-metal oxide composite absorber: organic amine piperazine (PZ) 5g is dissolved in the 400ml water, then add 2g alkaline metal oxide barium monoxide, stirred 10 minutes, with barium monoxide equably suspended dispersed in the PZ aqueous solution, make the PZ-BaO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 8:
The preparation of organic amine-metal oxide composite absorber: organic amine TEPA (TEPA) 5g is dissolved in the 400ml water, then add 2g alkaline metal oxide beryllium oxide, stirred 10 minutes, with beryllium oxide equably suspended dispersed in the TEPA aqueous solution, make the TEPA-BeO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 9:
The preparation of organic amine-metal oxide composite absorber: organic amine polymine (PEI) 5g is dissolved in the 400ml water, then add 2g alkaline metal oxide calcium oxide, stirred 10 minutes, with calcium oxide equably suspended dispersed in the PEI aqueous solution, make the PEI-CaO composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 1.The reaction unit flow process is seen accompanying drawing 1.
In order to prove that organic amine catches CO to metal oxide 2Facilitation, as a comparison, with pure water, or pure metal oxides, or at the metal oxide that only in water, adds different quality, or be used for CO only in water, adding organic amine 2Seizure:
Embodiment 10:
In the glass reactor of 50ml, carry out the CO of pure water 2The capturing ability test, the 40ml pure water of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 11:
In the glass reactor of 50ml, carry out the CO of metal oxide absorbent 2The capturing ability test, the 0.2g metal oxide magnesia of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 12:
The preparation of water-metal oxide composite absorber: in 400ml water, add 0.4g alkaline metal oxide magnesia, stirred 10 minutes, with calcium oxide equably suspended dispersed in water, make MgO-H 2The O composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 13:
The preparation of water-metal oxide composite absorber: in 400ml water, add 1g alkaline metal oxide magnesia, stirred 10 minutes, with calcium oxide equably suspended dispersed in water, make MgO-H 2The O composite absorber.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 14:
The preparation of By Amine Solutions absorbent: in 400ml water, add 5g organic amine N methyldiethanol amine (MDEA), stirred 10 minutes, so that MDEA dissolves fully, make the agent of MDEA solution absorption.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 15:
The preparation of By Amine Solutions absorbent: in 400ml water, add 5g organic amine monoethanolamine (MEA), stirred 10 minutes, so that MEA dissolves fully, make the agent of MEA solution absorption.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 16:
The preparation of By Amine Solutions absorbent: in 400ml water, add 5g organic amine piperazine (PZ), stirred 10 minutes, so that PZ dissolves fully, make the agent of PZ solution absorption.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen accompanying drawing 1.
Embodiment 17:
The preparation of By Amine Solutions absorbent: in 400ml water, add 5g organic amine tetrem alkene five by (TEPA), stirred 10 minutes, so that TEPA dissolves fully, make the agent of TEPA solution absorption.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen Fig. 1.
Embodiment 18:
The preparation of By Amine Solutions absorbent: in 400ml water, add 5g organic amine polymine (PEI), stirred 10 minutes, so that PEI dissolves fully, make the agent of PEI solution absorption.
In the glass reactor of 50ml, carry out the CO of above-mentioned composite absorber 2The capturing ability test, the above-mentioned composite absorber of 40.5ml of packing in glass reactor absorbs 25 ℃ of temperature controls.Pass into CO in the reactor 2And N 2, CO 2Flow be 5ml/min, N 2Flow is 45ml/min.CO 2And N 2Enter reactor after mixing, gaseous reaction product is analyzed with mass spectrum after absorbent absorbs.Absorbent catches CO 2Ability see Table 2.The reaction unit flow process is seen Fig. 1.
Table 1: the CO of organic amine-metal oxide absorbent 2Catch performance
Figure BDA00002744066900081
Table 2: the water slurry of metal oxide, metal oxide, the CO of By Amine Solutions 2Catch performance
Contrast table 1 and table 2 can find that 0.5g MDEA only can absorb 3.67mmol CO in 40ml water 2(example 14), the CO of 0.1g MgO in the 40ml water 2Absorbability only is 0.29mmol(example 13).And after in the reactor that contains 0.5g MDEA, adding 0.005g MgO, its CO 2Absorbability has reached 3.79mmol(example 5); If the MgO that adds is 0.1g, its CO 2Absorbability has reached 6.90mmol(example 4); If the MgO that adds is 0.2g, its CO 2Absorbability has reached 10.98mmol(example 3); If the MgO that adds is 1.0g, its CO 2Absorbability has reached 20.51mmol(example 3).Therefore the CO that adds the compound agent for capturing of organic amine-metal oxide of MgO preparation in the MDEA solution 2Absorbability is obviously greater than MDEA solution and metal oxide CO 2Absorbability add and, show that the compound agent for capturing of organic amine-metal oxide has stronger CO 2Absorbability has preferably application prospect.

Claims (6)

1. CO 2Absorbent is characterized in that: this absorbent is comprised of organic amine and alkaline metal oxide, and the mass ratio of organic amine and alkaline metal oxide is 0.01～100:1.
2. CO according to claim 1 2Absorbent is characterized in that: the mass ratio of organic amine and alkaline metal oxide is 1:1.
3. CO according to claim 1 2Absorbent is characterized in that: described organic amine is selected from a kind of in monoethanolamine, diethanol amine, N methyldiethanol amine, piperazine, ethylenediamine, diethylenetriamine, triethylene tetramine, TEPA, the polymine.
4. CO according to claim 1 2Absorbent is characterized in that: described alkaline metal oxide is selected from a kind of in magnesia, calcium oxide, barium monoxide, the beryllium oxide.
5. CO according to claim 1 2Absorbent is characterized in that: described organic amine concentration is 0.0125%～1.25%.
6. the described CO of claim 1 2The preparation method of absorbent is characterized in that: a certain amount of organic amine is dissolved in the water, then adds a certain amount of alkaline metal oxide, adopt ultrasonic or stir the metal oxide suspended dispersed in water, make final products.
CN2013100169918A 2013-01-16 2013-01-16 CO2 absorbent and preparation method thereof Pending CN103007690A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103804686A (en) * 2014-02-21 2014-05-21 东华大学 Preparation method of modified polyethyleneimine (PEI)
CN108976124A (en) * 2017-06-05 2018-12-11 神华集团有限责任公司 A kind of CO2The method for trapping simultaneously direct synthesis of dialkyl carbonates
CN113351148A (en) * 2021-06-29 2021-09-07 西安热工研究院有限公司 Catalytic ceramic filler loaded with composite metal oxide and preparation method thereof
US11413600B2 (en) 2020-02-21 2022-08-16 King Fahd University Of Petroleum And Minerals Magnesium oxide-polyamine adsorbent and a method of capturing carbon dioxide

Citations (1)

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CN202191834U (en) * 2011-07-14 2012-04-18 江苏方舟新能源股份有限公司 Waste gas recovery device for calcining furnace

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CN202191834U (en) * 2011-07-14 2012-04-18 江苏方舟新能源股份有限公司 Waste gas recovery device for calcining furnace

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Title
罗红情等: "CO2的醇胺吸收及资源化利用", 《中国科技论文在线》, 15 July 2011 (2011-07-15), pages 1 - 7 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103804686A (en) * 2014-02-21 2014-05-21 东华大学 Preparation method of modified polyethyleneimine (PEI)
CN103804686B (en) * 2014-02-21 2016-02-17 东华大学 A kind of preparation method of modified polyethyleneimine
CN108976124A (en) * 2017-06-05 2018-12-11 神华集团有限责任公司 A kind of CO2The method for trapping simultaneously direct synthesis of dialkyl carbonates
CN108976124B (en) * 2017-06-05 2022-04-15 国家能源投资集团有限责任公司 CO (carbon monoxide)2Method for trapping and directly synthesizing dialkyl carbonate
US11413600B2 (en) 2020-02-21 2022-08-16 King Fahd University Of Petroleum And Minerals Magnesium oxide-polyamine adsorbent and a method of capturing carbon dioxide
CN113351148A (en) * 2021-06-29 2021-09-07 西安热工研究院有限公司 Catalytic ceramic filler loaded with composite metal oxide and preparation method thereof

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