CN115608372A - Iron-cobalt-based catalyst, carbon nano tube and preparation process thereof - Google Patents
Iron-cobalt-based catalyst, carbon nano tube and preparation process thereof Download PDFInfo
- Publication number
- CN115608372A CN115608372A CN202211121091.5A CN202211121091A CN115608372A CN 115608372 A CN115608372 A CN 115608372A CN 202211121091 A CN202211121091 A CN 202211121091A CN 115608372 A CN115608372 A CN 115608372A
- Authority
- CN
- China
- Prior art keywords
- cobalt
- iron
- based catalyst
- nitrate
- carbon nano
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 39
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 39
- 239000003054 catalyst Substances 0.000 title claims abstract description 29
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 15
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims abstract description 13
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims abstract description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 235000012501 ammonium carbonate Nutrition 0.000 claims abstract description 12
- 239000001099 ammonium carbonate Substances 0.000 claims abstract description 12
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 12
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims abstract description 12
- 229940010552 ammonium molybdate Drugs 0.000 claims abstract description 12
- 235000018660 ammonium molybdate Nutrition 0.000 claims abstract description 12
- 239000011609 ammonium molybdate Substances 0.000 claims abstract description 12
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims abstract description 12
- 229940071125 manganese acetate Drugs 0.000 claims abstract description 12
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 238000005336 cracking Methods 0.000 claims abstract description 4
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 abstract description 5
- 239000010941 cobalt Substances 0.000 abstract description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8898—Manganese, technetium or rhenium containing also molybdenum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/16—Preparation
- C01B32/162—Preparation characterised by catalysts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/16—Preparation
- C01B32/164—Preparation involving continuous processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/22—Electronic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/30—Purity
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/34—Length
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/36—Diameter
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides an iron-cobalt-based catalyst, a carbon nano tube and a preparation process thereof, wherein the iron-cobalt-based catalyst is prepared from the following raw materials in percentage by mass: 7-7.5wt% of ferric nitrate, aluminum nitrate: 10-15wt%, 4-8wt% of ammonia water, 0.1-0.5wt% of ammonium molybdate, 1-5wt% of ammonium carbonate, 0.5-0.9wt% of manganese acetate, 1.5-2wt% of cobalt nitrate and H 2 O62-75 wt%; the preparation process of the carbon nano tube comprises the following steps: adding the iron-cobalt-based catalyst into the first main reactor, introducing nitrogen and propylene, and performing expansion cracking on the propylene under the action of the iron-cobalt-based catalyst to obtain a carbon nano tube seed material; and blowing the carbon nano tube seed material into the second main reactor, and then introducing nitrogen and propylene for reaction to obtain a carbon nano tube finished product. The iron-cobalt-based catalyst of the invention is beneficial to improving the purity of the carbon nano tubeAnd the content of impurities such as iron, cobalt and the like is reduced.
Description
Technical Field
The invention relates to the technical field of carbon nano tubes, in particular to an iron-cobalt-based catalyst, a carbon nano tube and a preparation process thereof.
Background
The carbon nano tube prepared by chemical vapor deposition is prepared by adding a catalyst into a furnace body, and then introducing a carbon source gas in the atmosphere of protective gas to grow the carbon nano tube, wherein the carbon nano tube prepared by the existing iron-cobalt based catalyst has the problems of low purity, high content of impurities such as iron, cobalt and the like.
Disclosure of Invention
The invention provides an iron-cobalt-based catalyst, a carbon nano tube and a preparation process thereof, which can improve the purity of the carbon nano tube and reduce the content of impurities such as iron, cobalt and the like.
The technical scheme of the invention is realized as follows: an iron-cobalt-based catalyst is prepared from the following raw materials in percentage by mass: 7-7.5wt% of ferric nitrate, aluminum nitrate: 10-15wt%, ammonia water 4-8wt%, ammonium molybdate 0.1-0.5wt%, ammonium carbonate 1-5wt%, manganese acetate 0.5-0.9wt%, cobalt nitrate 1.5-2wt%, and H 2 O62-75wt％。
Further, 7-7.5wt% of ferric nitrate, aluminum nitrate: 11-12wt%, ammonia water 5-6wt%, ammonium molybdate 0.2-0.3wt%, ammonium carbonate 3wt%, manganese acetate 0.7-0.8wt%, cobalt nitrate 1.5-2wt%, and H 2 O 70-72wt％。
Further, iron nitrate 7.28wt%, aluminum nitrate: 11.3wt%, ammonia water 5.61wt%, ammonium molybdate 0.26wt%, ammonium carbonate 3wt%, manganese acetate 0.71wt%, cobalt nitrate 1.64wt%, and H 2 O 70.2wt％。
A preparation process of carbon nanotubes comprises the following steps:
(1) Adding the iron-cobalt-based catalyst into a first main reactor, then introducing nitrogen and propylene, and carrying out expansion cracking on the propylene under the action of the iron-cobalt-based catalyst in a nitrogen environment to obtain a carbon nano tube seed material;
(2) And blowing the carbon nano tube seed material into the second main reactor through nitrogen, and then introducing nitrogen and propylene for reaction to obtain a carbon nano tube finished product.
The carbon nano tube is prepared by adopting the preparation process.
The invention has the beneficial effects that:
the carbon nano tube prepared by the iron-cobalt-based catalyst is beneficial to reducing the content of metal impurities such as iron, cobalt and the like, reducing the resistivity of carbon nano tube powder and improving the purity of the carbon nano tube.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a TEM image of carbon nanotubes in example 5 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention adopts nitrogen with the purity of 99.999 percent as protective gas and propylene with the purity of 99.6 percent.
Example 1
An iron-cobalt-based catalyst is prepared from the following raw materials in percentage by mass: 7wt% of iron nitrate, aluminum nitrate: 15wt%, ammonia water 6wt%, ammonium molybdate 0.2wt%, ammonium carbonate 4wt%, manganese acetate 0.8wt%, cobalt nitrate 1.5wt%, and H 2 O 65.5wt％。
Example 2
An iron-cobalt-based catalyst is prepared from the following raw materials in percentage by mass: 7.5wt% of iron nitrate, aluminum nitrate: 10wt%, ammonia water 5wt%, ammonium molybdate 0.5wt%, ammonium carbonate 3wt%, manganese acetate 0.5wt%, cobalt nitrate 2wt%, and H 2 O 71.5wt％。
Example 3
An iron-cobalt-based catalyst is prepared from the following raw materials in percentage by mass: 7.28wt% of iron nitrate, aluminum nitrate: 11.3wt%, 5.61wt% of ammonia water, 0.26wt% of ammonium molybdate, 3wt% of ammonium carbonate, 0.71wt% of manganese acetate, 1.64wt% of cobalt nitrate and H 2 O 70.2wt％。
Example 4
An iron-cobalt-based catalyst is prepared from the following raw materials in percentage by mass: 7wt% of iron nitrate, aluminum nitrate: 12wt%, 8wt% of ammonia water, 0.3wt% of ammonium molybdate, 5wt% of ammonium carbonate, 0.9wt% of manganese acetate, 1.5wt% of cobalt nitrate and H 2 O 65.3wt％。
The method of preparing an iron-cobalt-based catalyst according to examples 1 to 4, wherein the iron-cobalt-based catalyst was obtained by stirring the above-mentioned raw materials uniformly, dehydrating, baking (550 °), pulverizing, and sieving.
Example 5
A preparation process of carbon nanotubes comprises the following steps:
(1) Firstly, blowing protective gas into a main reactor and a gas preheating furnace and starting to heat, wherein the protective gas is nitrogen with the purity of 99.999 percent; after the temperature of the main reactor is raised to 600 ℃, adding 3kg of the iron-cobalt-based catalyst prepared in the embodiment 3 into the main reactor, then introducing nitrogen and propylene, in a nitrogen environment, expanding and cracking the propylene under the action of the iron-cobalt-based catalyst to obtain a carbon nano tube seed material, cooling the carbon nano tube seed material, and then blowing the cooled carbon nano tube seed material into a transfer tank through nitrogen;
(2) And blowing the carbon nanotube seed material into the second main reactor through nitrogen, then introducing nitrogen and propylene for reaction, after the reaction is finished, blowing the carbon nanotube seed material into the cooling tank through nitrogen, cooling to 80 degrees, and blowing the carbon nanotube seed material into a finished product tank through nitrogen to obtain a carbon nanotube finished product.
In the steps (1) and (2), the introduction of the gas is divided into ten stages, the gas comprises high-temperature propylene, low-temperature propylene, high-temperature nitrogen and low-temperature nitrogen, and the introduction amount is shown in the following table 1:
TABLE 1 gas introduction in the individual stages
Comparative example 1
This example is substantially the same as example 5 except that: an iron-cobalt-based catalyst is prepared from the following raw materials in percentage by mass: 7.6wt% of ferric nitrate, aluminum nitrate: 11.3wt%, 5.61wt% of ammonia water, 0.26wt% of ammonium molybdate, 3wt% of ammonium carbonate, 0.71wt% of manganese acetate, 1.32wt% of cobalt nitrate and H 2 O 70.2wt％。
The finished carbon nanotubes prepared in example 5 were examined as shown in table 2 below:
table 2 examination results of carbon nanotube finished products of example 5 and comparative example 1
As can be seen from table 2 above, the carbon nanotube product prepared in example 5 of the present invention has lower iron and cobalt contents in metal impurities, lower powder resistivity, and higher purity.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The iron-cobalt-based catalyst is characterized by being prepared from the following raw materials in percentage by mass: 7-7.5wt% of ferric nitrate, aluminum nitrate: 10-15wt%, ammonia water 4-8wt%, ammonium molybdate 0.1-0.5wt%, ammonium carbonate 1-5wt%, manganese acetate 0.5-0.9wt%, cobalt nitrate 1.5-2wt%, and H 2 O 62-75wt％。
2. The iron-cobalt based catalyst according to claim 1, wherein the weight percentage of iron nitrate is 7-7.5%, and the weight percentage of aluminum nitrate is aluminum nitrate: 11-12wt%, ammonia water 5-6wt%, ammonium molybdate 0.2-0.3wt%, ammonium carbonate 3wt%, manganese acetate 0.7-0.8wt%, cobalt nitrate 1.5-2wt%, and H 2 O 70-72wt％。
3. The iron-cobalt based catalyst according to claim 2, wherein the iron nitrate is iron nitrate7.28wt%, aluminum nitrate: 11.3wt%, ammonia water 5.61wt%, ammonium molybdate 0.26wt%, ammonium carbonate 3wt%, manganese acetate 0.71wt%, cobalt nitrate 1.64wt%, and H 2 O 70.2wt％。
4. A preparation process of carbon nanotubes is characterized by comprising the following steps:
(1) Adding the iron-cobalt-based catalyst in the claims 1-3 into a first main reactor, then introducing nitrogen and propylene, and performing expansion cracking on the propylene under the action of the iron-cobalt-based catalyst in a nitrogen environment to obtain a carbon nanotube seed material;
(2) And blowing the carbon nano tube seed material into the second main reactor through nitrogen, and then introducing nitrogen and propylene for reaction to obtain a carbon nano tube finished product.
5. A carbon nanotube produced by the production process according to claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211121091.5A CN115608372B (en) | 2022-09-15 | 2022-09-15 | Iron-cobalt-based catalyst, carbon nanotube and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211121091.5A CN115608372B (en) | 2022-09-15 | 2022-09-15 | Iron-cobalt-based catalyst, carbon nanotube and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115608372A true CN115608372A (en) | 2023-01-17 |
| CN115608372B CN115608372B (en) | 2024-03-26 |
Family
ID=84858797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211121091.5A Active CN115608372B (en) | 2022-09-15 | 2022-09-15 | Iron-cobalt-based catalyst, carbon nanotube and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115608372B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006087590A1 (en) * | 2005-02-15 | 2006-08-24 | The Foundation Of Research And Technology Hellas / Institute Of Chemical Engineering And High Temperature Chemical Processes | Catalysts for the large scale production of high purity carbon nanotubes with chemical vapor deposition |
| US20130171054A1 (en) * | 2011-12-31 | 2013-07-04 | Cheil Industries Inc. | Supported Catalyst for Synthesizing Multi-Wall Carbon Nanotubes and Method for Preparing the Same |
| CN103502146A (en) * | 2011-03-21 | 2014-01-08 | 阿克马法国公司 | Process for fabricating carbon nanotubes and apparatus for implementing the process |
| US20150093576A1 (en) * | 2013-09-30 | 2015-04-02 | Samsung Sdi Co., Ltd. | Carbon Nanotubes and Method for Preparing the Same |
| KR20160080718A (en) * | 2014-12-30 | 2016-07-08 | 금호석유화학 주식회사 | Method for preparing carbon nanotubes having high purity and high density |
| US20170022063A1 (en) * | 2015-07-23 | 2017-01-26 | Sk Innovation Co., Ltd. | Catalyst for Production of Multi-Walled Carbon Nanotubes and Method of Producing Multi-Walled Carbon Nanotubes Using the Same |
| US20190126255A1 (en) * | 2017-10-31 | 2019-05-02 | Sk Innovation Co., Ltd. | Catalyst for Synthesizing Carbon Nanotube and Method of Synthesizing Carbon Nanotube |
| CN110801843A (en) * | 2019-11-11 | 2020-02-18 | 内蒙古骏成新能源科技有限公司 | Two-stage method for preparing high-magnification carbon nano tube with superfine tube diameter, catalyst and preparation method thereof |
| CN113058605A (en) * | 2021-03-08 | 2021-07-02 | 新奥石墨烯技术有限公司 | Catalyst for carbon nanotube and preparation method and application thereof |
| CN114308049A (en) * | 2021-12-17 | 2022-04-12 | 诺瑞(深圳)新技术有限公司 | Growth catalyst for preparing carbon nano tube with high specific surface area |
-
2022
- 2022-09-15 CN CN202211121091.5A patent/CN115608372B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006087590A1 (en) * | 2005-02-15 | 2006-08-24 | The Foundation Of Research And Technology Hellas / Institute Of Chemical Engineering And High Temperature Chemical Processes | Catalysts for the large scale production of high purity carbon nanotubes with chemical vapor deposition |
| CN103502146A (en) * | 2011-03-21 | 2014-01-08 | 阿克马法国公司 | Process for fabricating carbon nanotubes and apparatus for implementing the process |
| US20130171054A1 (en) * | 2011-12-31 | 2013-07-04 | Cheil Industries Inc. | Supported Catalyst for Synthesizing Multi-Wall Carbon Nanotubes and Method for Preparing the Same |
| US20150093576A1 (en) * | 2013-09-30 | 2015-04-02 | Samsung Sdi Co., Ltd. | Carbon Nanotubes and Method for Preparing the Same |
| KR20160080718A (en) * | 2014-12-30 | 2016-07-08 | 금호석유화학 주식회사 | Method for preparing carbon nanotubes having high purity and high density |
| US20170022063A1 (en) * | 2015-07-23 | 2017-01-26 | Sk Innovation Co., Ltd. | Catalyst for Production of Multi-Walled Carbon Nanotubes and Method of Producing Multi-Walled Carbon Nanotubes Using the Same |
| US20190126255A1 (en) * | 2017-10-31 | 2019-05-02 | Sk Innovation Co., Ltd. | Catalyst for Synthesizing Carbon Nanotube and Method of Synthesizing Carbon Nanotube |
| CN110801843A (en) * | 2019-11-11 | 2020-02-18 | 内蒙古骏成新能源科技有限公司 | Two-stage method for preparing high-magnification carbon nano tube with superfine tube diameter, catalyst and preparation method thereof |
| CN113058605A (en) * | 2021-03-08 | 2021-07-02 | 新奥石墨烯技术有限公司 | Catalyst for carbon nanotube and preparation method and application thereof |
| CN114308049A (en) * | 2021-12-17 | 2022-04-12 | 诺瑞(深圳)新技术有限公司 | Growth catalyst for preparing carbon nano tube with high specific surface area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115608372B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110801843B (en) | Two-stage method for preparing high-magnification carbon nano tube with superfine tube diameter, catalyst and preparation method thereof | |
| CN110227826B (en) | Method for preparing high-purity nano molybdenum powder | |
| CN103924111B (en) | The preparation method of a kind of Wimet nanometer particle size powder and high performance sintered block materials | |
| AU2020103465A4 (en) | Method for preparing high-purity spherical ruthenium powder by microwave one-step method | |
| CN109079151B (en) | Method for preparing ultra-coarse tungsten powder by high-temperature liquid-phase reduction of tungsten oxide | |
| CN111495381A (en) | Preparation method of flaky catalyst, flaky catalyst and application of flaky catalyst in preparation of superfine carbon nano tube | |
| CN107673318B (en) | Boron nitride nanotubes and batch preparation method thereof | |
| CN113058605A (en) | Catalyst for carbon nanotube and preparation method and application thereof | |
| CN108500283A (en) | A kind of method that inexpensive two sections of reduction prepare nano-tungsten powder | |
| CN115608372A (en) | Iron-cobalt-based catalyst, carbon nano tube and preparation process thereof | |
| CN103130284B (en) | Method for producing nickel carbonyl powder from nickel hydroxide | |
| CN110066952B (en) | Preparation method of zirconium oxide reinforced molybdenum alloy bar | |
| CN107746057B (en) | Preparation method of superfine molybdenum carbide | |
| CN116495736A (en) | Method for preparing MXees composite material efficiently by flash freezing and microwaves | |
| CN115947342A (en) | Nitrogen-doped molybdenum carbide and carbon composite nano material and preparation method thereof | |
| CN115072677A (en) | High-quality silicon nitride powder synthesis method | |
| CN113353899B (en) | Preparation method of boron nitride nanotube, boron nitride nanotube and application of boron nitride nanotube | |
| CN115747552A (en) | Preparation method of nano-copper modified carbon nanotube reinforced titanium-based composite material | |
| CN115386911A (en) | Preparation method of graphene-disulfur compound heterogeneous composite powder | |
| CN114873569A (en) | Method for preparing high-quality vanadium nitride by vanadium oxide reduction nitridation under reducing atmosphere | |
| CN115650211A (en) | Carbon nano tube and two-section type preparation process thereof | |
| CN115650211B (en) | Carbon nanotube and two-stage preparation process thereof | |
| CN112919913A (en) | Preparation method of high-purity superfine hafnium boride powder and hafnium boride powder | |
| CN110980735A (en) | Short flow path, low cost micron WO3Method for preparing high-performance nano WC powder | |
| CN1663681A (en) | Catalyst for preparing carbon nanotube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |