CN115707510A - Preparation method and application of modified MOR molecular sieve - Google Patents
Preparation method and application of modified MOR molecular sieve Download PDFInfo
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- CN115707510A CN115707510A CN202110950882.8A CN202110950882A CN115707510A CN 115707510 A CN115707510 A CN 115707510A CN 202110950882 A CN202110950882 A CN 202110950882A CN 115707510 A CN115707510 A CN 115707510A
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- 239000002808 molecular sieve Substances 0.000 title claims abstract description 63
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 44
- 150000003839 salts Chemical class 0.000 claims abstract description 34
- 238000005342 ion exchange Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 48
- 238000001179 sorption measurement Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 16
- 239000003463 adsorbent Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 11
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 8
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 4
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 4
- NKQIMNKPSDEDMO-UHFFFAOYSA-L barium bromide Chemical compound [Br-].[Br-].[Ba+2] NKQIMNKPSDEDMO-UHFFFAOYSA-L 0.000 claims description 4
- 229910001620 barium bromide Inorganic materials 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- -1 halide salt Chemical class 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 239000004246 zinc acetate Substances 0.000 claims description 4
- 150000005323 carbonate salts Chemical class 0.000 claims description 2
- 229910000358 iron sulfate Inorganic materials 0.000 claims description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 description 14
- 239000003245 coal Substances 0.000 description 12
- 239000003054 catalyst Substances 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
- 239000010457 zeolite Substances 0.000 description 5
- 229910021536 Zeolite Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 150000007942 carboxylates Chemical class 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02C20/20—Capture or disposal of greenhouse gases of methane
Abstract
The application discloses a preparation method and application of a modified MOR molecular sieve. The preparation method comprises the following steps: carrying out solid-state ion exchange on a raw material containing the molecular sieve with the MOR topological structure and metal salt to obtain the modified MOR molecular sieve; the metal element in the metal salt is at least one element selected from Li element, mg element, ca element, sr element, ba element, fe element and Zn element.
Description
Technical Field
The application relates to a preparation method and application of a modified MOR molecular sieve, belonging to the technical field of chemical materials.
Background
The low-concentration coal bed gas refers to the coal bed gas with the methane volume fraction of less than 30%. According to the regulation of national coal mine safety regulations, when the coal bed gas is utilized, the volume fraction of the methane is not less than 30%. For the part of coal bed gas, the current practice is to use domestic fuel near coal mines or directly discharge the coal bed gas. This not only wastes resources, but also pollutes the environment. Therefore, the improvement of the utilization rate of the coal bed gas has important significance for reducing energy waste and environmental pollution, improving the energy structure of China, and developing circular economy and low-carbon economy. At present, the common method is to concentrate methane in low-concentration coal bed gas to more than 35% to be used as civil fuel and industrial fuel, and to be used as automobile fuel and industrial raw material when the concentration is more than 90%, thereby realizing wider application and higher resource value.
The pressure swing adsorption technology is an effective gas separation and purification method, and the selection of an adsorbent is a key step. The zeolite molecular sieve has a uniform pore structure, and the surface of the zeolite molecular sieve can be modified through ion exchange, so that the adsorption capacity of the zeolite molecular sieve on methane is increased, and the zeolite molecular sieve is further applied to concentration of methane in low-concentration coal bed gas. The commonly used ion exchange method is a liquid phase ion exchange method, i.e. metal salt to be exchanged is dissolved in water to prepare an aqueous solution with a certain concentration, and then the aqueous solution is subjected to ion exchange with the molecular sieve to realize surface modification of the molecular sieve, but the method generates a large amount of waste water containing metal ions and pollutes the environment.
Disclosure of Invention
According to one aspect of the present application, there is provided a modified MOR molecular sieve having a large methane adsorption capacity.
A method for preparing a modified MOR molecular sieve, the method comprising the steps of:
carrying out solid-state ion exchange on a raw material containing the molecular sieve with the MOR topological structure and metal salt to obtain the modified MOR molecular sieve;
the metal element in the metal salt is at least one selected from Li element, mg element, ca element, sr element, ba element, fe element and Zn element.
The solid-phase ion exchange is to heat treat the mixed salt powder and the molecular sieve at the temperature lower than the melting point of the salt, so that the salt can be dispersed into the inner hole and the inner surface of the molecular sieve, and part of metal ions dispersed into the inner hole of the molecular sieve can perform solid-state ion exchange reaction with the molecular sieve to different degrees, thereby realizing the surface modification of the molecular sieve.
Optionally, the molecular sieve having the MOR topology has a particle size of from 200nm to 3mm.
Alternatively, the molecular sieve having the MOR topology has a particle size with an upper limit selected from 500nm, 1000nm, 200 μm, 500 μm, 1000 μm, 2mm, or 3mm and a lower limit selected from 200nm, 500nm, 1000nm, 200 μm, 500 μm, 1000 μm, or 2mm.
Optionally, the metal salt is selected from at least one of a nitrate of a metal, a halide salt of a metal, a sulfate salt of a metal, a carbonate salt of a metal, a carboxylate salt of a metal.
Optionally, the metal salt is selected from at least one of lithium chloride, magnesium nitrate, calcium carbonate, barium bromide, zinc acetate, and iron sulfate.
Optionally, the mass ratio of said molecular sieve having MOR topology to said metal salt is from 1 to 10.
Alternatively, the molecular sieve having a MOR topology and the metal salt have an upper mass ratio selected from the group consisting of 2.
Optionally, the solid state ion exchange is performed under calcination conditions comprising:
the roasting temperature is 300-800 ℃.
Optionally, the temperature of the calcination is selected from 350 ℃, 400 ℃, 450 ℃, 500 ℃, 550 ℃, 600 ℃, 650 ℃, 700 ℃, 750 ℃ or 800 ℃ at the upper limit and 300 ℃, 350 ℃, 400 ℃, 450 ℃, 500 ℃, 550 ℃, 600 ℃, 650 ℃, 700 ℃ or 750 ℃ at the lower limit.
Optionally, the conditions of the firing include:
the roasting temperature is 300-700 ℃.
Optionally, the conditions of the firing include:
the roasting temperature is 650-700 ℃.
Optionally, the conditions of the firing include:
the roasting time is 1-24 h.
Optionally, the upper limit of the roasting time is selected from 4h, 6h, 8h, 10h, 12h, 15h, 18h, 20h or 24h, and the lower limit is selected from 2h, 4h, 6h, 8h, 10h, 12h, 15h, 18h or 20h.
Optionally, the conditions of the firing include:
the roasting time is 8-24 h.
Optionally, the conditions of the firing include:
the roasting time is 12-24 h.
Optionally, the preparation method comprises the steps of:
and grinding the metal salt, mixing with the molecular sieve with the MOR topological structure, and roasting to obtain the modified MOR molecular sieve.
Optionally, the grinding time is 1 to 12 hours.
Optionally, the upper time limit of the milling is selected from 1h, 2h, 4h, 6h, 8h, 10h or 12h, and the lower time limit is selected from 1h, 2h, 4h, 6h, 8h or 10h.
According to another aspect of the present application, there is provided the use of the modified MOR molecular sieve prepared according to the preparation method described in any one of the above as a methane adsorbent.
Optionally, the methane adsorbent has an adsorption capacity of 32-49 cm for methane at 25 deg.C and 100KPa 3 /g。
As an embodiment, the invention provides a methane adsorbent, which is obtained by uniformly mixing a molecular sieve with an MOR topological structure and metal salt ground into powder and then roasting the mixture; the metal salt is selected from Li + 、Mg 2+ 、Ca 2+ 、Sr 2+ 、Ba 2+ 、Fe 3+ 、Zn 2+ At least one of nitrate, halide, sulfate, carbonate and carboxylate of metal ions. The electric field intensity in the molecular sieve is improved through solid-phase ion exchange, so that the adsorption capacity of the adsorbent to methane is improved, and the concentration of methane in low-concentration coal bed gas can be realized.
An adsorbent comprising a support and a metal salt.
The carrier is a molecular sieve having MOR topology.
The metal salts enter the inner pores and inner surface of the MOR molecular sieve by spontaneous dispersion.
The mass ratio of the carrier to the metal salt is 1.
The molecular sieve with the MOR topological structure is powder or particles with the particle size of 300 um-3 mm.
The metal salt is selected from Li + 、Mg 2+ 、Ca 2+ 、Sr 2+ 、Ba 2+ 、Fe 3+ 、Zn 2+ At least one of nitrate, halide, sulfate, carbonate and carboxylate of metal ions.
As another embodiment, the present application provides a method for preparing the above adsorbent, the method comprising:
and grinding the metal salt into powder, then uniformly mixing the powder with a carrier, and roasting to obtain the methane adsorbent.
Optionally, the grinding time is 1-12 h.
Optionally, the roasting temperature is 300-800 ℃, and the roasting time is 1-24 h.
Optionally, the mass ratio of the support to the metal salt is 1.
Optionally, the method comprises at least: grinding the metal salt for 1-12 h, adding MOR molecular sieve carrier according to the proportion, uniformly mixing, and roasting to obtain the adsorbent.
The beneficial effects that this application can produce include:
1) The preparation method of the modified MOR molecular sieve provided by the application can greatly improve the methane adsorption capacity of the modified MOR molecular sieve through solid-state ion exchange.
2) The preparation method of the modified MOR molecular sieve provided by the application has the advantages of simple operation of the whole preparation process, no waste water generation and environmental friendliness.
3) The modified MOR molecular sieve provided by the application has the advantages that the adsorption capacity of methane is increased and can reach 32cm 3 More than g, can be applied to the concentration of methane in low-concentration coal bed gas.
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
The raw materials in the examples of the present application were all purchased commercially, unless otherwise specified.
Preparation method of MOR molecular sieve powder (particle size is 200 nm) in the examples of the present application reference book Verified Syntheses of Zeolite Materials,Third Revised EditionMintova (Editor), n.barrier (XRD Patterns), page 307; MOR molecular sieve particles (3 mm in size) were purchased from Nankai catalyst factories;
the analysis method in the examples of the present application is as follows:
methane adsorption measurements were performed using a Gemini VII 2390 physical adsorption apparatus by Micromeritics, USA.
Comparative example 1
The molecular sieve powder (particle size 200 nm) with MOR topology prepared according to the reference was subjected to measurement of CH at 25 ℃ under 100KPa 4 The adsorption capacity is 18cm 3 /g。
Comparative example 2
The measured CH of MOR molecular sieve particles (particle size: 3 mm) obtained from Nankai catalyst works at 25 deg.C and 100KPa 4 The adsorption capacity was 15cm 3 /g。
Example 1
Grinding LiCl for 1h, uniformly mixing 5g of molecular sieve powder with MOR topological structure prepared according to the reference with 0.5g of the LiCl which is ground into powder (namely, the mass ratio of the molecular sieve to the metal salt is 10: 1), and then roasting at 450 ℃ for 12h to obtain the methane adsorbent 1#, wherein CH of the product is measured under the conditions of 25 ℃ and 100KPa 4 The adsorption capacity was 41cm 3 /g。
Example 2
Grinding magnesium nitrate for 6h, uniformly mixing 5g of molecular sieve particles with MOR topological structure purchased from Nankai catalyst factory with 2g of magnesium nitrate ground into powder (namely, the mass ratio of the molecular sieve to the metal salt is 2.5 4 The adsorption capacity was 38cm 3 /g。
Example 3
The calcium carbonate was ground for 12h, 5g of molecular sieve powder having MOR topology prepared according to the reference and 5g of ground powdered calcium carbonate were mixed uniformly (i.e. mass ratio of molecular sieve to metal salt is 1) and then calcined at 800 ℃ for 1h to obtain methane adsorbent3# under the conditions of 25 ℃ and 100KPa, measuring the CH of the product 4 The adsorption capacity is 32cm 3 /g。
Example 4
Grinding barium bromide for 4h, uniformly mixing 5g of molecular sieve particles with MOR topological structure purchased from Nankai catalyst factory with 3g of barium bromide ground into powder (namely, the mass ratio of the molecular sieve to the metal salt is 1.67 4 The adsorption capacity was 49cm 3 /g。
Example 5
Grinding zinc acetate for 8h, uniformly mixing 5g of molecular sieve powder with MOR topological structure prepared according to reference and 4g of ground zinc acetate (namely, the mass ratio of the molecular sieve to the metal salt is 1.25 4 The adsorption capacity was 46cm 3 /g。
Example 6
Grinding ferric sulfate for 2h, uniformly mixing 5g of molecular sieve particles with MOR topological structure purchased from Nankai catalyst factory and 5g of powdered ferric sulfate (namely, the mass ratio of the molecular sieve to the metal salt is 1), then roasting at 300 ℃ for 24h to obtain the methane adsorbent No. 6, and measuring CH of the product under the conditions of 25 ℃ and 100KPa 4 The adsorption capacity was 42cm 3 /g。
Comparative example 3
5g of molecular sieve powder with MOR topology prepared according to the reference were ion exchanged with 1mol/L LiCl solution, wherein the solid-liquid mass ratio of the ion exchange was 1:40; roasting at 450 deg.C for 12h after exchange to obtain methane adsorbent 7#, and measuring CH of product at 25 deg.C and 100KPa 4 The adsorption capacity was 19cm 3 /g。
Comparative example 4
The carbon monoxide adsorption amount of the No. 1 adsorbent was measured to be 16cm under the conditions of 25 ℃ and 100KPa 3 /g。
From the foregoing, it can be seen that the present application is directed toAdsorbent prepared by solid-state ion exchange for CH 4 Is greatly improved in adsorption of CH 4 Has better adsorption specificity and poorer adsorption effect on carbon monoxide.
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (10)
1. A preparation method of a modified MOR molecular sieve is characterized by comprising the following steps:
carrying out solid-state ion exchange on a raw material containing the molecular sieve with the MOR topological structure and metal salt to obtain the modified MOR molecular sieve;
the metal element in the metal salt is at least one element selected from Li element, mg element, ca element, sr element, ba element, fe element and Zn element.
2. The method of claim 1, wherein the molecular sieve having MOR topology has a particle size of 200nm to 3mm.
3. The production method according to claim 1, wherein the metal salt is at least one selected from the group consisting of a nitrate of a metal, a halide salt of a metal, a sulfate salt of a metal, a carbonate salt of a metal, and a carboxylate salt of a metal.
4. The method according to claim 1, wherein the metal salt is at least one selected from the group consisting of lithium chloride, magnesium nitrate, calcium carbonate, barium bromide, zinc acetate, and iron sulfate.
5. The method of claim 1, wherein the mass ratio of the molecular sieve having MOR topology to the metal salt is from 1 to 10.
6. The method of claim 1, wherein the solid-state ion exchange is performed under calcination conditions, the calcination conditions comprising:
the roasting temperature is 300-800 ℃;
preferably, the conditions of the calcination include:
the roasting temperature is 300-700 ℃;
preferably, the conditions of the calcination include:
the roasting temperature is 650-700 ℃;
preferably, the conditions of the calcination include:
the roasting time is 1-24 h;
preferably, the conditions of the calcination include:
the roasting time is 8-24 h;
preferably, the conditions of the calcination include:
the roasting time is 12-24 h.
7. The method of claim 1, comprising the steps of:
and grinding the metal salt, mixing with the molecular sieve with the MOR topological structure, and roasting to obtain the modified MOR molecular sieve.
8. The method of claim 1, wherein the milling time is 1 to 12 hours.
9. The use of the modified MOR molecular sieve prepared by the preparation method according to claims 1 to 8 as a methane adsorbent.
10. The use according to claim 9, wherein the methane adsorbent has an adsorption capacity of 32-49 cm for methane at 25 ℃ and 100KPa 3 /g。
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116793A (en) * | 1988-06-14 | 1992-05-26 | Uop | Process for modifying clinoptilolite adsorbent |
| JP2007222702A (en) * | 2006-02-21 | 2007-09-06 | Union Showa Kk | Solid molded adsorbent for removing sulfur component, its manufacturing method and method for desulfurizing hydrocarbon |
| CN103894076A (en) * | 2012-12-28 | 2014-07-02 | 中国科学院上海高等研究院 | Method for preparing high-performance molecular sieve membrane through ion exchange at melting state |
| WO2019222865A1 (en) * | 2018-05-25 | 2019-11-28 | 中国科学院大连化学物理研究所 | Molecular sieve alkylation catalyst having improved para-selectivity, preparation method therefor and application thereof |
| CN110876923A (en) * | 2018-09-05 | 2020-03-13 | 中国科学院大连化学物理研究所 | Adsorbent and preparation method and application thereof |
-
2021
- 2021-08-18 CN CN202110950882.8A patent/CN115707510B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116793A (en) * | 1988-06-14 | 1992-05-26 | Uop | Process for modifying clinoptilolite adsorbent |
| JP2007222702A (en) * | 2006-02-21 | 2007-09-06 | Union Showa Kk | Solid molded adsorbent for removing sulfur component, its manufacturing method and method for desulfurizing hydrocarbon |
| CN103894076A (en) * | 2012-12-28 | 2014-07-02 | 中国科学院上海高等研究院 | Method for preparing high-performance molecular sieve membrane through ion exchange at melting state |
| WO2019222865A1 (en) * | 2018-05-25 | 2019-11-28 | 中国科学院大连化学物理研究所 | Molecular sieve alkylation catalyst having improved para-selectivity, preparation method therefor and application thereof |
| CN110876923A (en) * | 2018-09-05 | 2020-03-13 | 中国科学院大连化学物理研究所 | Adsorbent and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 宁慧青;卢兴鲁;刘泉;任军;李忠;: "固态离子交换制备Cu(Ⅰ)分子筛研究进展", 化工进展, no. 09 * |
| 王波: ""多相催化体系中芳烃及其衍生物的烷基化和羟基化"", 中国优秀硕士论文全文数据库, pages 8 * |
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