CN114808510A - Method for extracting high-purity cellulose material from xylitol residues by using ionic liquid - Google Patents
Method for extracting high-purity cellulose material from xylitol residues by using ionic liquid Download PDFInfo
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- CN114808510A CN114808510A CN202210538246.9A CN202210538246A CN114808510A CN 114808510 A CN114808510 A CN 114808510A CN 202210538246 A CN202210538246 A CN 202210538246A CN 114808510 A CN114808510 A CN 114808510A
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- ionic liquid
- cellulose
- xylitol
- extracting
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- 239000001913 cellulose Substances 0.000 title claims abstract description 57
- 229920002678 cellulose Polymers 0.000 title claims abstract description 57
- 239000002608 ionic liquid Substances 0.000 title claims abstract description 44
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical group OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 title claims abstract description 20
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004627 regenerated cellulose Substances 0.000 claims abstract description 19
- -1 light industry Substances 0.000 claims abstract description 16
- 239000007864 aqueous solution Substances 0.000 claims abstract description 10
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004108 freeze drying Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000006228 supernatant Substances 0.000 claims description 6
- 150000001450 anions Chemical class 0.000 claims description 5
- 150000001768 cations Chemical class 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 2
- 239000012153 distilled water Substances 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 229940085991 phosphate ion Drugs 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 2
- 239000012498 ultrapure water Substances 0.000 claims description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims 2
- RWRDLPDLKQPQOW-UHFFFAOYSA-N tetrahydropyrrole Natural products C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 claims 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Natural products C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims 1
- ZRALSGWEFCBTJO-UHFFFAOYSA-N anhydrous guanidine Natural products NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-O phosphonium Chemical group [PH4+] XYFCBTPGUUZFHI-UHFFFAOYSA-O 0.000 claims 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Substances C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims 1
- 125000001453 quaternary ammonium group Chemical group 0.000 claims 1
- NQRYJNQNLNOLGT-UHFFFAOYSA-N tetrahydropyridine hydrochloride Natural products C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 claims 1
- 229920005610 lignin Polymers 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 239000004753 textile Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- FHDQNOXQSTVAIC-UHFFFAOYSA-M 1-butyl-3-methylimidazol-3-ium;chloride Chemical compound [Cl-].CCCCN1C=C[N+](C)=C1 FHDQNOXQSTVAIC-UHFFFAOYSA-M 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000012492 regenerant Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 239000000811 xylitol Substances 0.000 description 2
- 229960002675 xylitol Drugs 0.000 description 2
- 235000010447 xylitol Nutrition 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 125000003535 D-glucopyranosyl group Chemical group [H]OC([H])([H])[C@@]1([H])OC([H])(*)[C@]([H])(O[H])[C@@]([H])(O[H])[C@]1([H])O[H] 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001212 derivatisation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention discloses a method for extracting high-purity cellulose material from xylitol residues by using ionic liquid, which comprises the steps of taking the xylitol residues as raw materials for extracting cellulose, uniformly mixing sulfamic acid and the ionic liquid, adding the xylitol residues, centrifuging mixed liquid obtained by reaction, uniformly mixing supernate with an acetone aqueous solution, and centrifuging again to obtain regenerated cellulose; washing the regenerated cellulose for multiple times until the washing liquid is clear, and freeze-drying to obtain the regenerated cellulose. According to the invention, through an ionic liquid/sulfamic acid system, the solubility of cellulose in xylitol residues in ionic liquid is improved, hydrogen bonds among components are broken, lignin is depolymerized, and the yield and purity of the cellulose are improved in a short time. The process is simple, the used ionic liquid solvent is green and environment-friendly, the ionic liquid solvent is easy to recover, and the obtained cellulose material can be applied to the fields of textile, light industry, chemical industry and the like.
Description
Technical Field
The invention belongs to the field of comprehensive utilization of biomass, and particularly relates to a method for extracting cellulose from xylitol residues by an ionic liquid system.
Background
Cellulose is a natural renewable high-molecular polymer which is most widely distributed and abundant in sources in the world, is formed by linking D-glucopyranosyl through beta-1, 4-glycosidic bonds, has molecular weight of hundreds to tens of thousands and has good biocompatibility, biodegradability and thermal stability. The cellulose and the derivatives thereof are converted into fine chemicals, foods, medicines, industrial raw materials and energy sources, and are widely applied to the fields of textiles, light industry, chemical industry, national defense, petroleum, medicines, energy sources, biotechnology and the like.
The xylitol residue is a waste material obtained by extracting xylitol from corncobs by high-temperature acidification, is low in price and contains abundant cellulose and lignin. The discharged xylitol residue is about 26 to 30 tons per 1 ton of xylitol, which not only occupies a large amount of field, but also causes environmental pollution. Therefore, the xylitol residues are recycled, the high-purity cellulose is extracted, partial fossil energy is replaced, and the problem of resource shortage is relieved, so that the method has important significance for realizing sustainable development and environmental protection.
The physical method for separating cellulose is to change or destroy the interaction between cellulose and lignin ester bond by physical actions such as high temperature, moist heat, ultrasonic wave, high pressure cooking and the like, thereby realizing the purpose of separating cellulose.
The chemical method for separating cellulose is to use strong acid or strong alkali and other chemical reagents to break the link between cellulose and lignin to obtain pure cellulose. But the physical method has larger energy consumption and incomplete removal of lignin, and strong acid and strong base reagents used in the chemical method easily pollute the environment.
Ionic Liquids (ILs) are liquid molten salts composed of anions and cations at room temperature, and have excellent properties such as incombustibility, chemical and thermal stability, low volatility, low vapor pressure, and structural designability. The cation of the ionic liquid is used as an electron acceptor, the anion is used as an electron donor, and the hydrogen bonds among cellulose macromolecules are destroyed through the interaction of the cation and the anion with oxygen atoms and hydrogen atoms in cellulose-OH, so that the cellulose is dissolved. The ionic liquid is used as a non-derivatization solvent of cellulose, and presents a good development situation in the research of the cellulose. However, the ionic liquid has high viscosity and high price, and has the problems of low extraction efficiency and low purity of cellulose, and the application of the ionic liquid is limited to a great extent.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the technical problem of the prior art and provides a method for extracting cellulose from xylitol residues by using ionic liquid so as to improve the yield and purity of the cellulose.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for extracting high-purity cellulose materials from xylitol residues by using ionic liquid comprises the steps of taking the xylitol residues as raw materials for extracting cellulose, uniformly mixing sulfamic acid and the ionic liquid, adding the xylitol residues, centrifuging mixed liquid obtained by reaction, uniformly mixing supernate and an acetone aqueous solution, and centrifuging again to obtain regenerated cellulose; washing the regenerated cellulose for multiple times until the washing liquid is clear, and freeze-drying to obtain the regenerated cellulose.
Specifically, in the ionic liquid, the cation is selected from any one of the following formulas:
imidazolium cations are preferred.
Specifically, the anion of the ionic liquid is selected from any one of a halogen ion, a carboxylate ion, a phosphate ion, and the like.
Preferably, the mass ratio of the sulfamic acid to the ionic liquid is 0.10: 10-0.50: 10.
Preferably, the mass ratio of the xylitol residue to the ionic liquid is 0.10:10-2.0: 10.
Preferably, the reaction temperature is 90-130 ℃ and the reaction time is 0.5-4 h.
Preferably, the centrifugal speed is 9000-10000 rpm, and the centrifugal time is 8-12 min.
Preferably, the acetone aqueous solution is a solution formed by mixing acetone and water deionized water according to a ratio of 1: 1; the mixing volume ratio of the supernatant obtained by centrifugation to the acetone aqueous solution is 1: 10.
preferably, the regenerated cellulose is washed by deionized water, distilled water or ultrapure water, and the washing times are 6-8 times.
Preferably, the freeze-drying temperature is-80 ℃ to-70 ℃, and the freeze-drying time is 24-36 h.
The cellulose yield calculation method of the invention is as follows: y is A/B100%;
wherein Y is the cellulose yield, B is the mass of cellulose in the xylitol residue, and A is the mass of extracted cellulose.
The purity of the cellulose was calculated as: p is A/C100%;
wherein P is the purity of the cellulose, A is the quality of the extracted cellulose, and C is the cellulose-rich regenerated quality.
Further, the yield of the cellulose obtained by the method is not lower than 61.15%, and the purity is not lower than 73.46%.
Has the advantages that:
the invention takes the xylitol residue which has relatively simple structural components and is rich in cellulose as a raw material for extracting the cellulose, improves the solubility of the cellulose in the xylitol residue in ionic liquid through an ionic liquid/sulfamic acid system, breaks hydrogen bonds among components, depolymerizes lignin and realizes the improvement of the yield and the purity of the cellulose in a short time. The method has the advantages of simple process, environment-friendly and easily-recycled ionic liquid solvent, and the obtained cellulose material can be applied to the fields of textile, light industry, chemical industry and the like.
Detailed Description
The invention will be better understood from the following examples.
Example 1
0.1g of xylitol residue, 0.1g of sulfamic acid, 10g of [ Bmim ] Cl were added to a three-necked flask under nitrogen protection. Heating to 90 ℃ in a heating module, reacting for 0.5h, stopping the reaction, centrifuging the mixed solution at 10000rpm for 8min, adding 6mL of supernatant into 60mL of acetone aqueous solution (1:1), fully stirring, and centrifuging to obtain regenerated cellulose. The regenerated cellulose was washed with 50mL of water to remove the residual ionic liquid for a total of 6 times. The regenerant was then lyophilized at-78 ℃ for 36h to yield the final cellulosic material. The yield of the cellulose was 76.19%, and the purity was 99.00%.
Example 2
2.0g of xylitol residue, 0.5g of sulfamic acid, 10g of [ Bmim ] Cl were added to a three-necked flask under nitrogen protection. Heating to 130 ℃ in a heating module, stopping the reaction after reacting for 4h, centrifuging the mixed solution for 8min at the speed of 10000rpm, taking 6mL of supernatant, adding 60mL of acetone aqueous solution (1:1), fully stirring, and centrifuging to obtain regenerated cellulose. The regenerated cellulose is added with 50mL of water to remove the residual ionic liquid, and the regenerated cellulose is washed with water for 6 times. The regenerant was then lyophilized at-78 ℃ for 36h to yield the final cellulosic material. The cellulose yield was 61.15% and the purity was 73.46%.
Example 3
0.5g of xylitol residue, 0.15g of sulfamic acid, 10g of [ Bmim ] Cl were added to a three-necked flask under nitrogen protection. Heating to 100 ℃ in a heating module, stopping the reaction after 1h of reaction, centrifuging the mixed solution for 8min at the speed of 10000rpm, taking 6mL of supernatant, adding 60mL of acetone aqueous solution (1:1), fully stirring, and centrifuging to obtain regenerated cellulose. The regenerated cellulose is added with 50mL of water to remove the residual ionic liquid, and the regenerated cellulose is washed with water for 6 times. The regenerant was then lyophilized for 36h at-78 ℃ to finally obtain a cellulosic material. The cellulose yield was 70.59%, and the purity was 86.59%.
The invention provides a method for extracting high-purity cellulose material from xylitol residue by using ionic liquid, and a method and a way for realizing the technical scheme are many, the above description is only a preferred embodiment of the invention, and it should be noted that for a person skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the invention, and the improvements and decorations should also be regarded as the protection scope of the invention. All the components not specified in the present embodiment can be realized by the prior art.
Claims (10)
1. A method for extracting high-purity cellulose materials from xylitol residues by using ionic liquid is characterized in that the xylitol residues are used as raw materials for extracting cellulose, sulfamic acid and the ionic liquid are uniformly mixed and then added into the xylitol residues, the mixed solution obtained by reaction is centrifuged, and the supernatant is centrifuged again after being uniformly mixed with an acetone aqueous solution to obtain regenerated cellulose; washing the regenerated cellulose for multiple times until the washing liquid is clear, and freeze-drying to obtain the regenerated cellulose.
2. The method for extracting high-purity cellulose materials from xylitol residues by using the ionic liquid as claimed in claim 1, wherein in the ionic liquid, the cation is selected from any one of imidazole cation, pyridine cation, quaternary ammonium cation, quaternary phosphonium cation, guanidine cation, triazole cation, pyrrolidine cation, piperidine cation, morpholine cation and pyrazole cation; the anion of the ionic liquid is selected from any one of halogen ion, carboxylate ion and phosphate ion.
3. The method for extracting the high-purity cellulose material from the xylitol residue by using the ionic liquid as claimed in claim 1, wherein the mass ratio of the sulfamic acid to the ionic liquid is 0.10: 10-0.50: 10.
4. The method for extracting high-purity cellulose material from xylitol residue by using ionic liquid as claimed in claim 1, wherein the mass ratio of the xylitol residue to the ionic liquid is 0.10:10-2.0: 10.
5. The method for extracting high-purity cellulose materials from xylitol residues by using the ionic liquid as claimed in claim 1, wherein the reaction temperature is 90-130 ℃ and the reaction time is 0.5-4 h.
6. The method for extracting the high-purity cellulose material from the xylitol residues by using the ionic liquid as claimed in claim 1, wherein the centrifugal speed is 9000-10000 rpm, and the centrifugal time is 8-12 min.
7. The method for extracting high-purity cellulose materials from xylitol residues by using the ionic liquid as claimed in claim 1, wherein the acetone aqueous solution is a solution of acetone and water deionized water mixed according to a ratio of 1: 1; the mixing volume ratio of the supernatant obtained by centrifugation to the acetone aqueous solution was 1: 10.
8. The method for extracting the high-purity cellulose material from the xylitol residues by using the ionic liquid as claimed in claim 1, wherein the regenerated cellulose is washed by using deionized water, distilled water or ultrapure water for 6-8 times.
9. The method for extracting the high-purity cellulose material from the xylitol residues by using the ionic liquid as claimed in claim 1, wherein the freeze-drying temperature is-80 ℃ to-70 ℃, and the freeze-drying time is 24-36 h.
10. The method for extracting high-purity cellulose material from xylitol residue by using ionic liquid as claimed in claim 1, wherein the cellulose yield is not lower than 61.15% and the purity is not lower than 73.46%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210538246.9A CN114808510A (en) | 2022-05-17 | 2022-05-17 | Method for extracting high-purity cellulose material from xylitol residues by using ionic liquid |
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| CN202210538246.9A CN114808510A (en) | 2022-05-17 | 2022-05-17 | Method for extracting high-purity cellulose material from xylitol residues by using ionic liquid |
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| CN202210538246.9A Pending CN114808510A (en) | 2022-05-17 | 2022-05-17 | Method for extracting high-purity cellulose material from xylitol residues by using ionic liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115748281A (en) * | 2022-12-09 | 2023-03-07 | 南京先进生物材料与过程装备研究院有限公司 | Method for extracting cellulose material from straws by using ionic liquid-aminobenzenesulfonic acid binary system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733224A (en) * | 2012-06-20 | 2012-10-17 | 合肥工业大学 | Method for separating corncob cellulose by using ionic liquid |
| CN103015244A (en) * | 2012-12-05 | 2013-04-03 | 青岛艾华隆生物科技有限公司 | Method for quickly extracting cellulose from xylitol production waste |
| CN106702802A (en) * | 2016-12-30 | 2017-05-24 | 中国科学院过程工程研究所 | Method for extracting high-purity cellulose from stalks in ionic liquid-sulfamic acid binary system |
-
2022
- 2022-05-17 CN CN202210538246.9A patent/CN114808510A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733224A (en) * | 2012-06-20 | 2012-10-17 | 合肥工业大学 | Method for separating corncob cellulose by using ionic liquid |
| CN103015244A (en) * | 2012-12-05 | 2013-04-03 | 青岛艾华隆生物科技有限公司 | Method for quickly extracting cellulose from xylitol production waste |
| CN106702802A (en) * | 2016-12-30 | 2017-05-24 | 中国科学院过程工程研究所 | Method for extracting high-purity cellulose from stalks in ionic liquid-sulfamic acid binary system |
Non-Patent Citations (1)
| Title |
|---|
| 张蕾（主编）: "《固体废弃物处理与资源化利用》", 31 December 2017, 中国矿业大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115748281A (en) * | 2022-12-09 | 2023-03-07 | 南京先进生物材料与过程装备研究院有限公司 | Method for extracting cellulose material from straws by using ionic liquid-aminobenzenesulfonic acid binary system |
| CN115748281B (en) * | 2022-12-09 | 2024-02-06 | 南京先进生物材料与过程装备研究院有限公司 | Method for extracting cellulose material from straw by ionic liquid-aminobenzenesulfonic acid binary system |
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