CN112225578A - Honeycomb activated alumina product and preparation method thereof - Google Patents
Honeycomb activated alumina product and preparation method thereof Download PDFInfo
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- CN112225578A CN112225578A CN202011269375.XA CN202011269375A CN112225578A CN 112225578 A CN112225578 A CN 112225578A CN 202011269375 A CN202011269375 A CN 202011269375A CN 112225578 A CN112225578 A CN 112225578A
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- activated alumina
- honeycomb
- alumina product
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- mud
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 32
- 238000001125 extrusion Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000032683 aging Effects 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 21
- 235000012211 aluminium silicate Nutrition 0.000 claims description 21
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 21
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 235000010980 cellulose Nutrition 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 4
- 235000011187 glycerol Nutrition 0.000 claims description 4
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 4
- 239000008107 starch Substances 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 239000008188 pellet Substances 0.000 claims description 3
- 244000275012 Sesbania cannabina Species 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 7
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 238000007791 dehumidification Methods 0.000 abstract description 2
- 239000003595 mist Substances 0.000 abstract description 2
- 230000001413 cellular effect Effects 0.000 abstract 1
- 238000000643 oven drying Methods 0.000 abstract 1
- 241000219782 Sesbania Species 0.000 description 4
- 229920000609 methyl cellulose Polymers 0.000 description 3
- 239000001923 methylcellulose Substances 0.000 description 3
- 235000010981 methylcellulose Nutrition 0.000 description 3
- 239000002671 adjuvant Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0003—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof containing continuous channels, e.g. of the "dead-end" type or obtained by pushing bars in the green ceramic product
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6021—Extrusion moulding
Abstract
The invention discloses a honeycomb activated alumina product and a preparation method thereof, relating to the technical field of dehumidification and catalysis, wherein the method comprises the following steps: mixing activated alumina powder, auxiliary materials, an extrusion aid and water to form a mud pie; aging and vacuum pugging; extruding into honeycomb shape in an extruder, and drying in the shade and/or oven drying; and (4) placing the mixture into a kiln for high-temperature sintering to obtain a honeycomb-shaped activated alumina product. According to the preparation method disclosed by the invention, in the process of manufacturing the activated alumina product, pseudo-boehmite is avoided, the product cost is reduced, no acid material is used, acid mist is not generated during sintering, no environmental pollution is caused, the water absorption rate of the obtained product can reach 30-40%, the product is cellular, the gas passing resistance is reduced, and the energy conservation and consumption reduction of equipment using the product are realized.
Description
Technical Field
The invention relates to the technical field of dehumidification and catalysis, in particular to a honeycomb activated alumina product and a preparation method thereof.
Background
In the prior art, activated alumina is a porous material, has a large surface area, has excellent adsorption performance, surface activity, thermal stability and the like, is usually made into a spherical shape, and is used as an adsorbent, a catalyst and a catalyst carrier. Most are spherical alumina in the existing market, and the packing density and the gas resistance increase in an exponential relationship in application, so that the gas passes through the spherical layer, a high-power fan is needed, and the energy consumption of equipment is increased. The existing active alumina extrusion molding technology is mainly made of pseudo-boehmite, which is extruded into different shapes by adding acid, sesbania powder and the like and sintered at the temperature of 600 ℃ of 500-. But the product has large shrinkage ratio when being dried, the complex section is difficult to form, in addition, the product price is high, the pseudo-boehmite is more than 4 times of the price of the spherical alumina, and the product cost is high. Acid is needed to be added in the preparation process, and the volatilization of the acid during sintering can cause environmental pollution.
Disclosure of Invention
The invention provides a honeycomb activated alumina product and a preparation method thereof, which solve the technical problems.
The invention provides a honeycomb activated alumina product, which is provided with honeycomb through holes.
Optionally, the raw materials of the honeycomb activated alumina product include: activated alumina powder.
Optionally, the raw material of the honeycomb activated alumina product further comprises: auxiliary materials and extrusion aids.
Optionally, the extrusion aid comprises one or more of cellulose, polyvinyl alcohol, starch, glycerol, sesbania powder; the auxiliary material comprises kaolin or clay.
Optionally, the honeycomb activated alumina product has an outer shape of a square or a circle or an ellipse.
Optionally, the through hole is specifically a square hole or a hexagonal hole.
The invention also provides a preparation method of the honeycomb activated alumina product, which comprises the following steps: mixing activated alumina powder, auxiliary materials, an extrusion aid and water to obtain a mud pie; putting the mud pellets into a machine for extrusion to form a honeycomb shape; drying in the shade and/or drying, and sintering at high temperature to obtain the honeycomb-shaped active alumina product.
Optionally, the method specifically includes:
step a: mixing 50-80% of active alumina powder and 50-20% of kaolin, and then adding 1-10% of extrusion auxiliary agent for mixing to obtain a mixed material; continuously mixing the mixed material with 30-45% of water to obtain a mud dough;
step b: ageing the mud pie, and then putting the mud pie into a vacuum pug mill for vacuum pugging;
step c: putting the mud dough obtained after vacuum pugging into an extruder to be extruded into a honeycomb shape, and drying in the shade and/or drying until the water content of the mud dough is less than 10%;
step d: sintering in a kiln at 800-950 deg.c to obtain honeycomb active alumina product.
Optionally, the activated alumina powder has a size of 100 mesh to 325 mesh.
Optionally, the sintering at high temperature is specifically: and putting the mixture into a kiln for sintering, wherein the sintering temperature is 800-950 ℃.
The invention has the beneficial effects that: compared with the prior art, the honeycomb activated alumina product and the preparation method thereof have obvious advantages, the preparation method adopts the activated alumina powder to replace pseudo-boehmite, the cost is more than 1/4 of the pseudo-boehmite, the product cost is reduced, in addition, acid materials are not used in the process of manufacturing the honeycomb activated alumina product, acid mist is not generated during sintering, and no environmental pollution is caused. The obtained honeycomb-shaped activated alumina product has the water absorption rate of 30-40 percent and is honeycomb-shaped, so that the gas passing resistance is reduced, and the energy conservation and consumption reduction of equipment using the product are realized.
Drawings
FIG. 1 is a schematic flow chart of a method for preparing a honeycomb activated alumina product according to example 1 of the present invention;
fig. 2 is a schematic structural diagram of a honeycomb activated alumina product provided in examples 1 and 2 of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a preparation method of a honeycomb activated alumina product, which comprises the following steps: mixing activated alumina powder, auxiliary materials, an extrusion aid and water to obtain a mud pie; putting the mud pellets into a machine for extrusion to form a honeycomb shape; drying in the shade and/or drying, and sintering at high temperature to obtain the honeycomb-shaped active alumina product.
In this embodiment, the adjuvant comprises kaolin or clay or other materials known to those skilled in the art to replace kaolin or clay.
Specifically, as shown in fig. 1, the method includes:
step a: mixing 50-80% of active alumina powder and 50-20% of kaolin, and then adding 1-10% of extrusion auxiliary agent for mixing to obtain a mixed material; continuously mixing the mixed material with 30-45% of water to obtain a mud dough;
the extrusion aids may include, but are not limited to, one or more of cellulose, polyvinyl alcohol, starch, glycerin, sesbania powder.
Preferably, the extrusion aid is methylcellulose or polyvinyl alcohol.
Preferably, the size of the activated alumina powder is 100 mesh to 325 mesh.
In the present embodiment, the ratio of the activated alumina powder refers to the ratio of the weight of the activated alumina powder to the sum of the weight of the activated alumina powder and the weight of the kaolin; the proportion of the kaolin refers to the proportion of the weight of the kaolin to the sum of the weight of the activated alumina powder and the weight of the kaolin; the proportion of the extrusion auxiliary agent is the proportion of the weight of the extrusion auxiliary agent to the sum of the weight of the extrusion auxiliary agent, the activated alumina powder and the kaolin; the proportion of the water is the proportion of the weight of the water to the sum of the weight of the water, the extrusion aid, the activated alumina powder and the kaolin. Therefore, the weight of the activated alumina powder, the kaolin, the extrusion aid and the water can be calculated in advance according to the proportion in the step, and the activated alumina powder, the kaolin, the extrusion aid and the water are directly mixed into a mud pie.
For example: mixing 65g of active alumina powder and 35g of kaolin, and then adding 10g of methyl cellulose for mixing to obtain a mixed material; mixing the mixed material with 72g of water to obtain a mud pie; or mixing 65g of activated alumina powder, 35g of kaolin, 10g of methyl cellulose and 72g of water to obtain a mud dough;
or mixing 65g of active alumina powder, 35g of kaolin and 5g of polyvinyl alcohol to obtain a mixed material; and continuously mixing the mixed material with 40-45% of water to form a mud pie.
Step b: ageing the mud pie, and then putting the mud pie into a vacuum pug mill for vacuum pugging;
preferably, step b is specifically: ageing the mud pie for 1-3 days, and then putting the mud pie into a vacuum pugging machine for vacuum pugging.
Step c: putting the mud dough obtained after vacuum pugging into an extruder to be extruded into a honeycomb shape, and drying in the shade and/or drying until the water content of the mud dough is less than 10%;
step d: sintering in a kiln at 800-950 deg.c to obtain honeycomb active alumina product.
Preferably, step d is specifically: sintering in a kiln at 800-950 deg.c to obtain honeycomb active alumina product.
The embodiment also provides a honeycomb activated alumina product obtained by the preparation method, and as shown in fig. 2, the honeycomb activated alumina product is provided with through holes in a honeycomb shape.
In the preparation method of the honeycomb activated alumina product provided by the embodiment, the activated alumina powder is adopted to replace pseudo-boehmite, the cost is more than 1/4 of the pseudo-boehmite, and the cost of the activated alumina powder product is reduced. The obtained honeycomb-shaped activated alumina product has the water absorption rate of 30-40 percent and is honeycomb-shaped, so that the gas passing resistance is reduced, and the energy conservation and consumption reduction of equipment using the product are realized.
Example 2
The present embodiment provides a honeycomb activated alumina product having through holes in a honeycomb shape, as shown in fig. 2.
Alternatively, the raw materials of the honeycomb activated alumina product include: activated alumina powder.
Optionally, the raw material of the honeycomb activated alumina product further comprises: auxiliary materials and extrusion aids.
Optionally, the extrusion aid comprises one or more of cellulose, polyvinyl alcohol, starch, glycerol, sesbania powder; the adjuvants include kaolin or clay or other materials known to those skilled in the art to replace kaolin or clay.
Preferably, the extrusion aid is cellulose or polyvinyl alcohol; the auxiliary material is kaolin.
Preferably, the outer shape of the honeycomb activated alumina product can be various shapes, and can be, but is not limited to, square, round, oval, and the like.
Preferably, the through holes of the honeycomb-shaped activated alumina product can be square holes or hexagonal holes or holes with other shapes.
The product water absorption of the honeycomb activated alumina product provided by the embodiment can reach 30% -40% and is honeycomb-shaped, so that the gas passing resistance is reduced, and the energy consumption of equipment is reduced.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The honeycomb activated alumina product is characterized in that the honeycomb activated alumina product is provided with honeycomb through holes.
2. The honeycomb activated alumina product according to claim 1, wherein the raw materials of the honeycomb activated alumina product comprise: activated alumina powder.
3. The honeycomb activated alumina product according to claim 2, wherein the raw material of the honeycomb activated alumina product further comprises: auxiliary materials and extrusion aids.
4. The honeycomb activated alumina product of claim 3, wherein the extrusion aids comprise one or more of cellulose, polyvinyl alcohol, starch, glycerin, sesbania powder; the auxiliary material comprises kaolin or clay.
5. The honeycomb activated alumina product according to claim 1, wherein the outer shape of the honeycomb activated alumina product is square or circular or oval.
6. Honeycomb activated alumina product according to claim 1, characterized in that the honeycomb cells are in particular square or hexagonal cells.
7. A method of making a honeycomb activated alumina product according to any one of claims 1 to 6 comprising:
mixing activated alumina powder, auxiliary materials, an extrusion aid and water to obtain a mud pie; putting the mud pellets into a machine for extrusion to form a honeycomb shape; drying in the shade and/or drying, and sintering at high temperature to obtain the honeycomb-shaped active alumina product.
8. The preparation method according to claim 7, which specifically comprises:
step a: mixing 50-80% of active alumina powder and 50-20% of kaolin, and then adding 1-10% of extrusion auxiliary agent for mixing to obtain a mixed material; continuously mixing the mixed material with 30-45% of water to obtain a mud dough;
step b: ageing the mud pie, and then putting the mud pie into a vacuum pugging machine for vacuum pugging;
step c: putting the mud dough obtained after vacuum pugging into an extruder to be extruded into a honeycomb shape, and drying in the shade and/or drying until the water content of the mud dough is less than 10%;
step d: sintering in a kiln at 800-950 deg.c to obtain honeycomb active alumina product.
9. The method of claim 7, wherein the size of the activated alumina powder is 100-325 mesh.
10. The preparation method according to claim 7, wherein the high-temperature sintering is specifically: and putting the mixture into a kiln for sintering, wherein the sintering temperature is 800-950 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011269375.XA CN112225578A (en) | 2020-11-13 | 2020-11-13 | Honeycomb activated alumina product and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011269375.XA CN112225578A (en) | 2020-11-13 | 2020-11-13 | Honeycomb activated alumina product and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019674A1 (en) * | 1979-05-31 | 1980-12-10 | Sumitomo Aluminium Smelting Company Limited | Process for the production of a hollow catalyst carrier made of transition-alumina |
| JPH06154598A (en) * | 1992-11-20 | 1994-06-03 | Sumitomo Metal Mining Co Ltd | Manufacture of gamma-alumina catalyst carrier |
| CN1926076A (en) * | 2004-10-08 | 2007-03-07 | 揖斐电株式会社 | Honeycomb structure and process for producing the same |
| CN106083134A (en) * | 2015-06-27 | 2016-11-09 | 北京神雾电力科技有限公司 | A kind of alpha-aluminium oxide matter large size ceramic heat storage and preparation technology thereof |
| CN110655389A (en) * | 2019-11-19 | 2020-01-07 | 中氢能源科技发展(内蒙古)有限公司 | Honeycomb ceramic with mesoporous nano alumina as matrix and preparation method thereof |
| CN215480607U (en) * | 2020-11-13 | 2022-01-11 | 广州市怡森环保设备有限公司 | Cellular activated alumina product |
-
2020
- 2020-11-13 CN CN202011269375.XA patent/CN112225578A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019674A1 (en) * | 1979-05-31 | 1980-12-10 | Sumitomo Aluminium Smelting Company Limited | Process for the production of a hollow catalyst carrier made of transition-alumina |
| JPH06154598A (en) * | 1992-11-20 | 1994-06-03 | Sumitomo Metal Mining Co Ltd | Manufacture of gamma-alumina catalyst carrier |
| CN1926076A (en) * | 2004-10-08 | 2007-03-07 | 揖斐电株式会社 | Honeycomb structure and process for producing the same |
| CN106083134A (en) * | 2015-06-27 | 2016-11-09 | 北京神雾电力科技有限公司 | A kind of alpha-aluminium oxide matter large size ceramic heat storage and preparation technology thereof |
| CN110655389A (en) * | 2019-11-19 | 2020-01-07 | 中氢能源科技发展(内蒙古)有限公司 | Honeycomb ceramic with mesoporous nano alumina as matrix and preparation method thereof |
| CN215480607U (en) * | 2020-11-13 | 2022-01-11 | 广州市怡森环保设备有限公司 | Cellular activated alumina product |
Non-Patent Citations (1)
| Title |
|---|
| 朱洪法: "催化剂手册", 31 August 2008, 金盾出版社, pages: 550 - 551 * |
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