CN113069877A - High-air-suction-rate environment-friendly hydrogen and water absorbent - Google Patents
High-air-suction-rate environment-friendly hydrogen and water absorbent Download PDFInfo
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- CN113069877A CN113069877A CN202110396189.0A CN202110396189A CN113069877A CN 113069877 A CN113069877 A CN 113069877A CN 202110396189 A CN202110396189 A CN 202110396189A CN 113069877 A CN113069877 A CN 113069877A
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- hydrogen
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000001257 hydrogen Substances 0.000 title claims abstract description 43
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 43
- 239000002250 absorbent Substances 0.000 title claims abstract description 39
- 230000002745 absorbent Effects 0.000 title claims abstract description 39
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 13
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 10
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 10
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims description 18
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 239000002243 precursor Substances 0.000 claims description 12
- HBEQXAKJSGXAIQ-UHFFFAOYSA-N oxopalladium Chemical compound [Pd]=O HBEQXAKJSGXAIQ-UHFFFAOYSA-N 0.000 claims description 7
- 229910003445 palladium oxide Inorganic materials 0.000 claims description 7
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 6
- 239000002808 molecular sieve Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims description 6
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 239000013335 mesoporous material Substances 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 3
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 3
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 3
- 229910001923 silver oxide Inorganic materials 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 12
- 239000003960 organic solvent Substances 0.000 abstract description 4
- 231100000331 toxic Toxicity 0.000 abstract description 4
- 230000002588 toxic effect Effects 0.000 abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 6
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910000833 kovar Inorganic materials 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 208000016169 Fish-eye disease Diseases 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 206010023126 Jaundice Diseases 0.000 description 1
- 206010067125 Liver injury Diseases 0.000 description 1
- 241001529936 Murinae Species 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002257 embryonic structure Anatomy 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 231100000234 hepatic damage Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000008818 liver damage Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000037384 skin absorption Effects 0.000 description 1
- 231100000274 skin absorption Toxicity 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Images
Classifications
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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
- B01D53/04—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 with stationary adsorbents
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/108—Hydrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to an environment-friendly hydrogen and water absorbent with high air suction rate, which comprises rosin modified phenolic resin, a water absorbent and/or a hydrogen absorbent, and is characterized in that the ratio of the mass of the rosin modified phenolic resin to the mass sum of the water absorbent and the hydrogen absorbent is 1: between 20 and 2: 1. The invention has the advantages that: under the condition that the water absorption capacity, the hydrogen absorption capacity, the temperature resistance and the damage resistance are equivalent to those of the prior art, toxic organic solvents are not needed, and the air suction rate of the hydrogen absorption water absorbent can be greatly improved.
Description
Technical Field
The invention relates to a high-air-suction-rate environment-friendly hydrogen and water absorbent, belonging to the technical field of electronic element materials.
Background
Water vapor and hydrogen are harmful gases in electronic devices such as OLEDs, FEDs, gallium arsenide devices, etc., and can cause device function failures or cause significant lifetime degradation. Therefore, how to remove harmful water vapor and hydrogen in the device is one of the important research subjects in the prior art.
In order to absorb water vapor, physical adsorption methods such as zeolite, molecular sieve, mesoporous material, etc. are generally used, and water vapor may be absorbed chemically by a method of generating hydroxide by the reaction of alkaline earth metal oxide and water vapor, or water vapor may be absorbed by using some salt having hygroscopic property. To ensure a sufficient adsorption rate, it is generally used in the form of a powder.
For the absorption of hydrogen, water vapor is mainly generated by the reaction of hydrogen with a transition metal oxide, and the water vapor is absorbed by a water absorbing agent such as a molecular sieve. In order to ensure the reactivity of the transition metal oxide with hydrogen, the surface area should be increased as much as possible, and it is generally used in the form of powder.
In order to assemble the hydrogen absorbing agent and the water absorbing agent in a device, the hydrogen absorbing agent and the water absorbing agent are generally mixed into paste by adopting an adhesive, the paste is fixed in the device by screen printing or spin coating, blade coating, casting and other modes, and the normal work can be realized by heating and activating after the adhesive is cured. Generally, the higher the content of the binder, the more firmly the hydrogen absorbing agent itself, the hydrogen absorbing agent and the adhesive substrate are bonded. In some devices, the device is subjected to a short period of high temperature during processing, and the adhesive must ensure the bonding strength of the water absorbent and the hydrogen absorbent after the processing, so that the powder cannot fall off, and the powder is prevented from decomposing and releasing harmful gases.
The present inventors summarized the drawbacks of the prior art in the patent application No. 201911414872, and proposed a hydrogen and water absorbent using soluble polyimide as a binder. Although it has the advantages of small binder dosage, convenient curing and 350 ℃ high temperature resistance, it also has significant disadvantages. The first is the DMAC solvent used, which has a certain toxicity. The invasion route is vapor inhalation and skin absorption; workers who were frequently exposed to dimethylacetamide observed jaundice, liver damage; DMAC was also observed to have toxic effects on murine embryos and teratogenic effects on rabbits. Secondly, because the usage amount of the binder is low, the viscosity of the slurry is also low, and solid matters such as molecular sieves, palladium oxide and the like are easy to precipitate in the drying and curing process, so that a layer of relatively compact organic film is formed on the surface layer. This film has poor air permeability, so that the suction rate of the whole hydrogen absorbing and water absorbing agent is greatly affected.
Disclosure of Invention
The invention provides an environment-friendly hydrogen and water absorbent with high air suction rate, which aims to overcome the defects of low air suction rate and the like caused by using a large amount of toxic organic solvents in the prior art.
The technical solution of the invention is as follows: the high-suction-rate environment-friendly hydrogen and water absorbent comprises rosin modified phenolic resin, a water absorbent and/or a hydrogen absorbent, and is characterized in that: the ratio of the mass of the rosin modified phenolic resin to the sum of the mass of the water absorbent and the mass of the hydrogen absorbent is 1: between 20 and 2: 1.
The water absorbent is one or more of zeolite, molecular sieve, alkaline earth metal oxide and mesoporous material, or a precursor thereof, or a combination of the precursors thereof. The water absorbing agent is a powder having a particle size of less than 100 μm.
The hydrogen absorbing agent is one or more of palladium oxide, copper oxide, manganese oxide, silver oxide, cerium oxide and cobalt oxide, or a precursor thereof, or a combination of the precursors thereof. The hydrogen getter is a powder having a particle size of less than 100 μm.
The invention has the advantages that:
1) toxic organic solvents are not required;
2) because the rosin modified phenolic resin has a unique honeycomb structure, micropores are distributed on the surface and inside of the hydrogen absorbent, so that the air suction rate can be improved;
3) can resist the heating of 300 ℃ for a long time, improves the heat resistance by about 50 ℃ compared with the conventional phenolic resin, and can meet the heat resistance requirement of the prior process.
Drawings
FIG. 1 is an SEM photograph of the high-suction-rate environment-friendly hydrogen and water absorbent of the present invention.
FIG. 2 is a water absorption versus time diagram for the examples.
Detailed Description
The high-air-suction-rate environment-friendly hydrogen and water absorbent comprises rosin modified phenolic resin, a water absorbent and/or a hydrogen absorbent, wherein the ratio of the mass of the rosin modified phenolic resin to the sum of the mass of the water absorbent and the mass of the hydrogen absorbent is 1: between 20 and 2: 1.
In practical use, the rosin modified phenolic resin needs to be dissolved in a suitable solvent to be used as a binder. Thanks to its good solubility, it is soluble in most organic solvents such as ethanol. To ensure the performance of the present invention, the content of the solvent may be adjusted as necessary, and it is removed by heating in the subsequent curing process.
The water absorbent is one or more of zeolite, molecular sieve, alkaline earth metal oxide and mesoporous material, or a precursor thereof, or a combination of the precursors; to ensure the water absorption rate, it is generally used in the form of powder having a particle size of less than 100 μm.
The hydrogen absorbing agent is one or more of palladium oxide, copper oxide, manganese oxide, silver oxide, cerium oxide and cobalt oxide, or a precursor thereof, or a combination of the precursors; the hydrogen absorption performance of the porous material can be further improved by depositing the porous material on the surface of the porous material, and the porous material is generally used in the form of powder with the particle size of less than 100 mu m.
The weight ratio of water absorbing agent to hydrogen absorbing agent is not particularly required in the present invention, depending on the requirements of the end use device.
In specific application, the mixture of the invention can be fixed inside a device by screen printing or spin coating, blade coating, casting and the like, and then heated to volatilize the solvent, activate the water absorbent and cure the binder, so that the device can normally work.
The technical solution of the present invention is further illustrated by the following examples.
Example 1
Namely the product sample prepared by the technical scheme of the invention. 20g of a commercially available rosin-modified phenol resin powder was dissolved in 80g of ethanol, and 50g of a 3A molecular sieve powder and 50g of a palladium oxide powder were added to the solution. The mixture was homogenized for 1h with a homogenizer, mixed well and then applied to the surface of the kovar alloy by blade coating. And putting the sample into an oven, heating to 250 ℃ at a heating speed of 1 ℃/min, preserving heat for half an hour, and then naturally cooling to prepare a 1 cm square sample with the thickness of 0.3mm for later use. When the sample is observed under a scanning electron microscope, a large number of holes of about 1 micron can be seen, as shown in fig. 1.
Example 2
This example is a sample preparation of the prior art publication for comparison. 10g of a commercially available rosin-modified phenol resin powder having a nominal heat resistance of 370 ℃ was dissolved in 90g of a Dimethylacetamide (DMAC) solvent, and 1.8 g of a commercially available silane coupling agent KH-550, 50g of a 3A molecular sieve powder, and 50g of a palladium oxide powder were added to the solution. The mixture was homogenized for 1 hour by a homogenizer, mixed well, and then dried naturally by blade coating on the surface of the kovar alloy to prepare a 1 cm square sample with a thickness of 0.3mm for use.
Example 3
This example is a sample preparation of the prior art publication for comparison. 30g of acrylic ester copolymer emulsion with solid phase content of 50%, 22g of alumina sol with solid phase content of 11%, 6g of absolute ethyl alcohol, 2g of ethyl cellulose and 1g of silicone oil are added into 25g of 3A molecular sieve powder and 25g of palladium oxide powder. The mixture was stirred in a planetary mixer for 24 h. A1 cm square sample with a thickness of 0.3mm was prepared by screen printing on the surface of the kovar alloy and drying at 70 ℃ for 10 min.
Example 4
In this example, comparative tests were conducted on samples of examples 1 to 3 in order to demonstrate the advantages of the present invention by simulating the conditions of actual use. The test method is as follows: the samples of examples 1 to 3 were first activated for 3 hours at 150 ℃ in a vacuum at a pressure of less than 1E-2Pa, cooled to room temperature in a vacuum, filled with dry inert gas, weighed separately in a dry inert gas atmosphere and then simultaneously exposed to an atmosphere of 75% relative humidity, and weighed separately at intervals. The difference between the water absorption capacity and the initial weight point is the water absorption capacity. The time is used as an abscissa and the water absorption is used as an ordinate, and an experimental result is shown in fig. 2, which shows that the water absorption reaches the saturated water absorption only in about 30min after the activation of the rosin-modified phenolic resin, and the speed is far higher than that of the prior art, so that the rosin-modified phenolic resin has a unique honeycomb structure.
Claims (5)
1. The high-suction-rate environment-friendly hydrogen and water absorbent comprises rosin modified phenolic resin, a water absorbent and/or a hydrogen absorbent, and is characterized in that the ratio of the mass of the rosin modified phenolic resin to the mass sum of the water absorbent and the hydrogen absorbent is 1: between 20 and 2: 1.
2. The high-air-suction-rate environment-friendly hydrogen and water absorbent as claimed in claim 1, wherein: the water absorbent is one or more of zeolite, molecular sieve, alkaline earth metal oxide and mesoporous material, or a precursor thereof, or a combination of the precursors thereof.
3. The high-air-suction-rate environment-friendly hydrogen and water absorbent as claimed in claim 2, wherein: the water absorbent is powder with the particle size of less than 100 mu m.
4. The high-air-suction-rate environment-friendly hydrogen and water absorbent as claimed in claim 1, wherein: the hydrogen absorbing agent is one or more of palladium oxide, copper oxide, manganese oxide, silver oxide, cerium oxide and cobalt oxide, or a precursor thereof, or a combination of the precursors thereof.
5. The high-air-suction-rate environment-friendly hydrogen and water absorbent as claimed in claim 4, wherein: the hydrogen absorbing agent is powder with the particle size of less than 100 mu m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110396189.0A CN113069877A (en) | 2021-04-13 | 2021-04-13 | High-air-suction-rate environment-friendly hydrogen and water absorbent |
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| CN202110396189.0A CN113069877A (en) | 2021-04-13 | 2021-04-13 | High-air-suction-rate environment-friendly hydrogen and water absorbent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115591533A (en) * | 2022-10-20 | 2023-01-13 | 兰州理工大学（Cn） | Graphene-based targeted hydrogen absorption nanocomposite and preparation method thereof |
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2021
- 2021-04-13 CN CN202110396189.0A patent/CN113069877A/en active Pending
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