CN100336597C - Nano ion exchange material and its preparing method - Google Patents
Nano ion exchange material and its preparing method Download PDFInfo
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- CN100336597C CN100336597C CNB031398510A CN03139851A CN100336597C CN 100336597 C CN100336597 C CN 100336597C CN B031398510 A CNB031398510 A CN B031398510A CN 03139851 A CN03139851 A CN 03139851A CN 100336597 C CN100336597 C CN 100336597C
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- 238000005342 ion exchange Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000006277 sulfonation reaction Methods 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 239000004964 aerogel Substances 0.000 claims abstract description 9
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 claims abstract description 6
- 238000005341 cation exchange Methods 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- 238000007265 chloromethylation reaction Methods 0.000 claims abstract description 4
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 230000009920 chelation Effects 0.000 claims abstract description 3
- 239000002105 nanoparticle Substances 0.000 claims description 38
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 claims description 17
- XTHPWXDJESJLNJ-UHFFFAOYSA-N chlorosulfonic acid Substances OS(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-N 0.000 claims description 17
- 230000035484 reaction time Effects 0.000 claims description 13
- 239000011159 matrix material Substances 0.000 claims description 10
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical class CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 claims description 6
- 150000001768 cations Chemical class 0.000 claims description 6
- 241001044369 Amphion Species 0.000 claims description 5
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 claims description 5
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 claims description 5
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 150000001450 anions Chemical class 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000009656 pre-carbonization Methods 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 238000007796 conventional method Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 206010013786 Dry skin Diseases 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 238000005349 anion exchange Methods 0.000 abstract description 4
- 238000007306 functionalization reaction Methods 0.000 abstract description 4
- 238000005576 amination reaction Methods 0.000 abstract description 2
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 150000003384 small molecules Chemical class 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 11
- 229910052717 sulfur Inorganic materials 0.000 description 11
- 239000011593 sulfur Substances 0.000 description 11
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 6
- 239000003456 ion exchange resin Substances 0.000 description 6
- 229920003303 ion-exchange polymer Polymers 0.000 description 6
- 238000000746 purification Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 239000002657 fibrous material Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
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- 125000000524 functional group Chemical group 0.000 description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- -1 pyridine radicals Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
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- 229910001423 beryllium ion Inorganic materials 0.000 description 1
- 239000003124 biologic agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
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- 239000003814 drug Substances 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Substances C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
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- 125000001302 tertiary amino group Chemical group 0.000 description 1
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- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The present invention relates to a nanometer ion exchange material and a preparation method thereof. The nanometer ion exchange material uses a network which is formed by interconnecting nanometer high polymer particles as a basal body. The size of the nanometer particle is from 10 to 100 nanometers. Plenty of acidic groups, basic groups or chelation groups are connected to the surface of the nanometer particle. The specific surface area reaches 300 to 1100m<2>/g. The pore volume reaches 1 to 2 ml/g. The apparent density is from 80 to 800 mg/cm<3>. The nanometer ion exchange material can use nanometer aerogel as a raw material. The raw material directly carries out a functionalized reaction, such as a sulfonation reaction, or reacts with small molecules to introduce reactive groups (such as chloromethyl). Then the raw material is further functionalized (such as amination or hydrolyzation). Finally, the raw material is dried under ordinary pressure, and the nanometer ion exchange material is prepared. Various cation exchange material, anion exchange material or amphoteric ion exchange materials can be prepared through the chloromethylation reaction and the functionalization reaction. The nanometer ion exchange material has low apparent density, large specific surface area, abundant mesopore, high exchange capacity which is as high as 14 meq/g, and favorable application prospect.
Description
Technical field
The present invention relates to a kind of novel nano ion exchange material and preparation method thereof.
Background technology
The macroion exchange material is the material that has the ionizable functional group on the family macromolecule matrix.Since these functional groups with the exchangeable ion of opposite charges can exchange absorption with the various ions in the aqueous solution; utilize the principle of the exchange and the absorption of ion-exchange; can reach effects such as concentrated, separation, purification, purification, decolouring, catalysis and medical treatment; fields such as the refining and food processing of therefore, extensive use of macroion exchange material and Chemical Manufacture, environmental protection, electronics industry, energy industry, metal smelt, chemistry and biological agent purification preparation, health care, carbohydrate.
Up to the present, the macroion exchange material is two types of ion exchange resin and ion-exchange fibres by differentiating forms mainly.The history that the appearance of ion exchange resin is about 70 years so far, and it also is the widest adsorption and separation material of current practical application amount.The matrix of ion exchange resin is three-dimensional cross-linked high polymer network, uses with the form of roundlet ball particle usually, and particle diameter does not wait at tens microns to several millimeters, and ion exchange capacity is several between several mMs about zero point.
Along with the development of synthetic fiber industry, be that the various ion exchange fiber materials of matrix are developed after nineteen fifties in succession with synthetic fibers.The same with ion exchange resin, ion-exchange fibre also has abundant ion-exchange group, and ion exchange capacity is about several mMs.Except with some denominators of general switch resin, it also has some particular performances characteristics.1. since the diameter of fiber far fewer than resin, (below the general 10 μ m of fibre diameter, and more than the general 30 μ m of particulate resins), significantly (fiber specific surface area is about 10-25m to the specific area of fibrous material greater than particulate resin
2/ g, the about 0.1m of plain particles resin
2/ g); 2. therefore, the exchange adsorption rate of ion-exchange fibre is than fast several times of corresponding granular resin, and elution speed is also significantly greater than resin; 3. fibrous material itself has certain elasticity, and the uniformity of fibre diameter is good a lot of with respect to the resin particle diameter, therefore using fashionable dress column density (circulating resistance) to be easy to control with the form of splitter, circulating resistance is less and can not closeization of material occur and cause that post stops up, even post can be turned around; 4. separation height; 5. can make various ways such as line, nonwoven, various textile fabrics owing to ion-exchange fibre, therefore, applying flexible, this has created condition for the reasonable selection of engineering equipment structure, the miniaturization and the serialization of easier realization exchange separator.
By different reaction kinetics, ion exchange resin and fiber can be made into cation, anion or both sexes exchange material, wherein cation exchange material comprises strong-acid type (sulfonic acid type), middle strong-acid type (phosphatic type) and weak-type (carboxylic acid type) etc., anion-exchange material comprises strong base (quaternary) and weak base type (primary, the second month in a season, tertiary amine groups, pyridine radicals, imidazole radicals) etc., and the amphion exchange material comprises the combination of various cations and anion exchange groups.
At present, along with development of science and technology, the research of nano material and application have caused the attention of people's height.Yet main now still limitation of the application of nano material and aspects such as some structural material and photoelectric functional material in the adsorption and separation material field, are not seen the bibliographical information of relevant nanoparticle function of exchange material so far.
Summary of the invention
The purpose of this invention is to provide a kind of nanoparticle function of exchange material and preparation method thereof.This nanoparticle exchange sorbing material has the advantages that specific area is big, exchange capacity is high, exchange velocity is fast and selectivity is good.
Nanostructured ion exchange material of the present invention is to be matrix with the network that nanometer high polymer particle links mutually, and the size of nano particle is about 10 to 100 nanometers, and nanoparticle surface links abundant acidity, alkalescence or chelation group; Specific area reaches 300～1100m
2/ g, pore volume reaches 1～2ml/g, and apparent density is 80～800mg/cm
3
The kind of the ion-exchange group of the required introduction of foundation, nanoparticle exchange material of the present invention can prepare by one of following two kinds of methods:
Method 1: adopt little molecular agents directly the nanoporous aerogel matrix to be carried out functionalization, for example the nanoporous aerogel matrix is carried out sulfonation, make the strong-acid type nanoparticle exchange material that contains sulfonic acid group.Concrete steps are generally: connecting the block aeroge that forms with high molecular nanometer particles is raw material, is this aerogel material of solvent soaking swelling with dichloroethanes, adds chlorosulfonic acid then; Chlorosulfonic acid: dichloroethanes (V/V)=2: 98～20: 80 (both sums are 100), and make the ratio of aeroge weight and reaction solution (chlorosulfonic acid/dichloroethanes mixed liquor) volume be maintained at about 1/50～1/200; Temperature is risen to 40～70 ℃ of reaction temperatures,, afterwards sample is taken out, wash with water, after 105～115 ℃ of dryings, obtain containing sulfonic nanoparticle exchange material to neutrality at this thermotonus 30～120min.
Method 2: adopt the aeroge raw material, introduce reactive group by reaction kinetic earlier, and then utilize resulting intermediate and the reaction of little molecular agents that has reactive group to obtain the various nanoparticle exchange materials that contain corresponding ion-exchange group.For example, available aeroge matrix and dimethoxym ethane, thionyl chloride and anhydrous stannic chloride carry out chloromethylation; Molal quantity by phenyl ring in the nanoporous aerogel is 1, and other reagent dosage mol ratio is: dimethoxym ethane is 1～6, and thionyl chloride is 3～10, and anhydrous stannic chloride is 0.1～1.2, and reaction temperature is 30～60 ℃, and the reaction time is 0.5～8 hour; Make the nanostructured intermediary material that contains chloromethyl; Further use the conventional method reaction kinetic (as amination or hydrolysis again in this intermediate that contains chloromethyl; Referring to Tang Shunqing, preparation, structure and the performance of organic oxidation restoring function fiber and to the research of precious metal ion adsorption mechanism, Zhongshan University's thesis for the doctorate, May nineteen ninety-five; The Zhongshan University library can openly consult), can obtain the nanoparticle exchange material of various cations, anion or amphion cation exchange groups.
In said method 1 and method 2, destroy the connecting structure of nanoparticle in order effectively to prevent the loose structure of material after functionalization from subsiding, the nanostructured that keeps the gained ion exchange material, particularly after functionalization, can cause the aeroge raw material that nanostructured is subsided for some, can at first the aeroge raw material be carried out pre-carbonization treatment, be about to the aeroge raw material and place heating furnace, in nitrogen protection, be warming up to about 350～450 ℃ and carry out pre-carbonization 30～120 minutes; And then carry out reaction kinetic.
The prepared novel nano structure ion exchange material of the present invention has higher specific area than traditional ion exchange resin and ion-exchange fibre and (reaches 300～1100m
2/ g), mesopore is abundant, and (pore volume reaches 1～2ml/g), and apparent density is very low (to be generally 80～800mg/cm
3).Therefore, this nanoparticle function of exchange material will have higher ion exchange capacity (can reach 14meq/g), faster exchange velocity and because the effect of nanometer swapace will have unique exchange selectivity.By chloromethylation and reaction kinetic, also can make various cations, anion exchange or amphion exchange material.Therefore, nanoparticle function of exchange material of the present invention has a good application prospect.This nano-functional material can substitute conventional ion exchanger resin and fiber applications in water purification, wastewater treatment, metal ion concentrate and withdrawal, food and medicine separate purifications, decolouring and make with extra care, catalyst carrier, polymer reactant and high-performance adsorbent etc.
Description of drawings
Fig. 1 is the transmission electron microscope photo of the prepared nanoparticle exchange material of the present invention.There is shown made nanoparticle exchange material and be ion by 50 to 100 nanometers connects and forms.
The specific embodiment
The invention will be further described by the following examples.The percent concentration of the chlorosulfonic acid solution described in each embodiment is volume ratio (V/V), and dichloroethanes is a solvent.
Embodiment 1:RF-gel 0.12g, 10% chlorosulfonic acid 12ml, 60 ℃ of reaction temperatures, reaction time 60min, sulfonation weightening finish 20.4%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 2.62%, ion exchange capacity is 14.38meq/g, and the apparent density of material is 271mg/cm
3
Embodiment 2:RF-gel 0.18g, 15% chlorosulfonic acid 18ml, 50 ℃ of reaction temperatures, reaction time 60min, sulfonation weightening finish 40%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 3.02%, ion exchange capacity is 13.27meq/g, and the apparent density of material is 265mg/cm
3
Embodiment 3:RF-gel 0.15g, 15% chlorosulfonic acid 15ml, 50 ℃ of reaction temperatures, reaction time 120min, the sulfonation weightening finish, the sulfur content of made nanoparticle exchange material (elementary analysis) is 2.81%, ion exchange capacity is 12.28meq/g, and the apparent density of material is 314mg/cm
3
Embodiment 4:RF-gel 0.10g, 10% chlorosulfonic acid 10ml, 50 ℃ of reaction temperatures, reaction time 60min, sulfonation weightening finish 13.6%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 2.46%, ion exchange capacity is 11.05meq/g, and the apparent density of material is 271mg/cm
3
Embodiment 5:RF-gel 0.20g, 10% chlorosulfonic acid 10ml, 60 ℃ of reaction temperatures, reaction time 90min, sulfonation weightening finish 21.7%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 2.59%, ion exchange capacity is 11.26meq/g, and the apparent density of material is 293mg/cm
3
Embodiment 6:RF-gel 0.16g, 10% chlorosulfonic acid 16ml, 30 ℃ of reaction temperatures, reaction time 60min, sulfonation weightening finish 5.4%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 0.59%, ion exchange capacity is 4.38meq/g, and the apparent density of material is 371mg/cm
3
Embodiment 7:RF-gel 0.14g, 10% chlorosulfonic acid 14ml, 70 ℃ of reaction temperatures, reaction time 60min, sulfonation weightening finish 42%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 4.02%, ion exchange capacity is 15.27meq/g, and the apparent density of material is 265mg/cm
3
Embodiment 8:RF-gel 0.15g, 5% chlorosulfonic acid 15ml, 60 ℃ of reaction temperatures, reaction time 30min, the sulfur content of made nanoparticle exchange material (elementary analysis) is 2.81%, and ion exchange capacity is 10.28meq/g, and the apparent density of material is 300mg/cm
3
Embodiment 9:RF-gel 0.18g, 20% chlorosulfonic acid 9ml, 50 ℃ of reaction temperatures, reaction time 60min, sulfonation weightening finish 36.6%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 3.78%, ion exchange capacity is 14.05meq/g, and the apparent density of material is 271mg/cm
3
Embodiment 10:RF-gel 0.12g, 10% chlorosulfonic acid 24ml, 40 ℃ of reaction temperatures, reaction time 90min, sulfonation weightening finish 20.5%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 2.35%, ion exchange capacity is 8.54meq/g, and the apparent density of material is 334mg/cm
3
Embodiment 11:RF-gel 0.3g; under nitrogen protection, be heated to 400 ℃ of heat treatment 90min; reduce to after the room temperature, get 0.2g, add 10% chlorosulfonic acid 20ml; 60 ℃ of reaction temperatures; reaction time 90min, sulfonation weightening finish 26.5%, the sulfur content of made nanoparticle exchange material (elementary analysis) is 3.05%; ion exchange capacity is 10.52meq/g, and the apparent density of material is 384mg/cm
3
Embodiment 12:RF-gel 0.5g, add the 22ml dichloroethanes, soaking at room temperature half an hour, under condition of ice bath, add dimethoxym ethane 0.96ml, thionyl chloride 1.56ml and anhydrous stannic chloride 0.5ml are warming up to 45 ℃, react 60 hours, the taking-up product washes, and obtains containing the nanoparticle exchange material precursor (nanostructured intermediary material) of chloromethyl; Afterwards, according to a conventional method reaction kinetic (referring to Tang Shunqing, preparation, structure and the performance of organic oxidation restoring function fiber and to the research of precious metal ion adsorption mechanism, Zhongshan University's thesis for the doctorate, May nineteen ninety-five; The Zhongshan University library can openly consult), can obtain the nanoparticle exchange material of various cations, anion or amphion cation exchange groups.
Claims (6)
1. a nanoparticle exchange material is characterized in that with the network that nanometer high polymer particle links mutually be matrix, and nano particle is of a size of 10 to 100 nanometers, and nanoparticle surface links abundant acidity, alkalescence or chelation group; Specific area reaches 300～1100m
2/ g, pore volume reaches 1～2ml/g, and apparent density is 80～800mg/cm
3
2. the preparation method of the described nanoparticle exchange material of claim 1 is characterized in that adopting little molecular agents directly the nanoporous aerogel matrix to be carried out sulfonation, makes the strong-acid type nanoparticle exchange material that contains sulfonic acid group; Concrete steps are: connecting the block aeroge that forms with high molecular nanometer particles is raw material, is this aerogel material of solvent soaking swelling with dichloroethanes, adds chlorosulfonic acid then: chlorosulfonic acid: dichloroethanes V/V=2: 98～20: 80; And make the ratio of aeroge weight and reaction solution volume remain on 1/50～1/200; Temperature is risen to 40～70 ℃, and reaction 30～120min takes out sample afterwards, washes with water to neutrality, after 105～115 ℃ of dryings, obtains containing sulfonic nanoparticle exchange material.
3. in accordance with the method for claim 2, it is characterized in that before the nanoporous aerogel matrix is carried out sulfonation, earlier the aeroge raw material being placed heating furnace, in nitrogen protection, be warming up to about 350～450 ℃ and carry out pre-carbonization 30～120 minutes.
4. the preparation method of the described nanoparticle exchange material of claim 1, it is characterized in that adopting the aeroge raw material, contain earlier the nanostructured intermediary material of reactive group by the reaction kinetic preparation: and then react with this intermediary material and little molecular agents and to obtain the various nanoparticle exchange materials that contain corresponding ion-exchange group.
5. in accordance with the method for claim 4, it is characterized in that aeroge raw material and dimethoxym ethane, thionyl chloride and anhydrous stannic chloride are carried out chloromethylation; Molal quantity by phenyl ring in the nanoporous aerogel is 1, and other reagent dosage mol ratio is: dimethoxym ethane is 1～6, and thionyl chloride is 3～10, and anhydrous stannic chloride is 0.1～1.2, and reaction temperature is 30～60 ℃, and the reaction time is 0.5～8 hour; Obtain containing the nanostructured intermediary material of chloromethyl; This intermediate that contains chloromethyl is further used the conventional method reaction kinetic again, obtain the nanoparticle exchange material of various cations, anion or amphion cation exchange groups.
6. according to claim 4 or 5 described methods; it is characterized in that before reaction kinetic prepares the nanostructured intermediary material that contains reactive group, earlier the aeroge raw material being placed heating furnace, in nitrogen protection, be warming up to about 350～450 ℃ and carry out pre-carbonization 30～120 minutes.
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| CN112973589B (en) * | 2021-02-05 | 2022-04-29 | 中国工程物理研究院激光聚变研究中心 | Preparation method of sulfonated RF aerogel microspheres |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744510A (en) * | 1995-04-25 | 1998-04-28 | Regents Of The University Of California | Organic carbon aerogels from the sol-gel polymerization of phenolic-furfural mixtures |
| CN1205709A (en) * | 1995-12-21 | 1999-01-20 | Iab离子交换器股份有限公司 | Process for prepn. of very acidic cation exchangers |
| EP1149630A2 (en) * | 2000-04-27 | 2001-10-31 | Bayer Aktiengesellschaft | Method for producing monodispersed gel-like cation exchangers |
| CN1401424A (en) * | 2001-08-24 | 2003-03-12 | 中国科学院山西煤炭化学研究所 | Process for preparing barrow size distribution charcoal aerogel |
-
2003
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744510A (en) * | 1995-04-25 | 1998-04-28 | Regents Of The University Of California | Organic carbon aerogels from the sol-gel polymerization of phenolic-furfural mixtures |
| CN1205709A (en) * | 1995-12-21 | 1999-01-20 | Iab离子交换器股份有限公司 | Process for prepn. of very acidic cation exchangers |
| EP1149630A2 (en) * | 2000-04-27 | 2001-10-31 | Bayer Aktiengesellschaft | Method for producing monodispersed gel-like cation exchangers |
| CN1401424A (en) * | 2001-08-24 | 2003-03-12 | 中国科学院山西煤炭化学研究所 | Process for preparing barrow size distribution charcoal aerogel |
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