CN117904709A - Method for preparing diamond by extracting carbon from animals - Google Patents
Method for preparing diamond by extracting carbon from animals Download PDFInfo
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- CN117904709A CN117904709A CN202311782135.3A CN202311782135A CN117904709A CN 117904709 A CN117904709 A CN 117904709A CN 202311782135 A CN202311782135 A CN 202311782135A CN 117904709 A CN117904709 A CN 117904709A
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- China
- Prior art keywords
- diamond
- methane
- carbon
- preparing
- hydrogen
- Prior art date
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- 239000010432 diamond Substances 0.000 title claims abstract description 51
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 47
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 25
- 241001465754 Metazoa Species 0.000 title claims abstract description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000001257 hydrogen Substances 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 10
- 238000010000 carbonizing Methods 0.000 claims abstract description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 210000004209 hair Anatomy 0.000 abstract description 2
- 230000002194 synthesizing effect Effects 0.000 abstract description 2
- 210000004369 blood Anatomy 0.000 abstract 1
- 239000008280 blood Substances 0.000 abstract 1
- 210000001185 bone marrow Anatomy 0.000 abstract 1
- 238000005229 chemical vapour deposition Methods 0.000 abstract 1
- 238000003763 carbonization Methods 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010437 gem Substances 0.000 description 2
- 229910001751 gemstone Inorganic materials 0.000 description 2
- 238000007545 Vickers hardness test Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a method for extracting carbon from animals, which mainly comprises the steps of carbonizing animal carbon sources, and reacting the generated carbon with hydrogen to prepare CH 4. The mixed gas of methane and hydrogen is prepared into diamond by adopting a CVD method. The purity of the prepared methane reaches more than 99.99%, the demand of synthesizing diamond carbon source is met, and the carbon source is derived from animal hair, bone marrow, blood and the like, so that the universality is strong. The invention also provides a method for preparing diamond by using the carbon source, which can obtain diamond with D-E grade color and FL grade purity.
Description
Technical Field
The invention belongs to the field of superhard material preparation, and particularly relates to a method for preparing diamond by extracting carbon from animals.
Background
Diamond is a precious stone and has been touted and liked by people, however, natural diamond has been increasingly expensive, people have sought alternatives, and artificial diamond is rapidly becoming a new pet in the precious stone market due to its low cost, environmental protection and high quality. The synthetic diamond may be used to make jewelry such as engagement media, necklaces, earrings, and the like. Artificial diamond has a great potential in the market because of its appearance similar to natural diamond, its stability and price. Many brands of jewelry begin to make jewelry items using artificial diamonds instead of natural diamonds, and this trend is referred to as "sustainable jewelry". Custom diamond with personalized features has important market value, for example, diamond is prepared from hair and bone as raw materials. How to extract and prepare the animal characteristic carbon source into diamond has important economic benefit.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for preparing diamond by extracting carbon from animals, obtaining high purity carbon powder and preparing diamond using the carbon powder.
Therefore, the invention provides a diamond prepared by extracting carbon from animals, which mainly comprises the technological processes of carbonization of carbon sources, preparation of dimethyl ether, preparation of diamond and the like. The diamond prepared by the process has D-E grade and FL grade of purity.
The invention also provides a method for preparing diamond by extracting carbon from animals, which comprises the following steps:
Carbonizing a carbon source: and (3) taking 100-300 g of animal carbon source, placing the animal carbon source in a drying oven, drying at 100-150 ℃, performing ball milling, placing the ball-milled powder in a crucible, placing the crucible in a pipe Ma Fulu, introducing argon gas into the crucible, preserving heat for 30-50 min at 600-1000 ℃, performing low-temperature carbonization, and performing high-temperature carbonization at 1500-2000 ℃ for 30-50 ℃.
Methane preparation: and placing the carbonized carbon in a tubular muffle furnace, and introducing hydrogen to react at 500-700 ℃ to prepare methane gas. On which methane is adsorbed by activated carbon. The desorbed methane is then collected by a drag-and-drop process.
Preparing diamond: mixing the collected methane and hydrogen, and depositing on the surface of the diamond seed crystal by adopting a microwave CVD device to prepare the diamond monocrystal. Wherein the temperature in the chamber is 1100-1600 ℃, and the flow ratio of methane to hydrogen is 1-1.5:0.5-1.2.
Based on the above, the carbon source carbonization step includes:
And (3) taking 100-300 g of animal carbon source, placing the animal carbon source in a drying oven, drying at 100-150 ℃, performing ball milling, placing the ball-milled powder in a crucible, placing the crucible in a pipe Ma Fulu, introducing argon gas into the crucible, preserving heat for 30-50 min at 600-1000 ℃, performing low-temperature carbonization, and performing high-temperature carbonization at 1500-2000 ℃ for 30-50 ℃.
Based on the above, the methane preparation step comprises:
and placing the carbonized carbon in a tubular muffle furnace, and introducing hydrogen to react at 500-700 ℃ to prepare methane gas. On which methane is adsorbed by activated carbon. The desorbed methane is then collected by a drag-and-drop process.
Based on the above, the diamond preparation steps include:
mixing the collected methane and hydrogen, and depositing on the surface of the diamond seed crystal by adopting a microwave CVD device to prepare the diamond monocrystal. Wherein the temperature in the chamber is 1100-1600 ℃, and the flow ratio of methane to hydrogen is 1-1.5:0.5-1.2.
Compared with the prior art, the grain size of the diamond prepared by the technology is increased by 10-20%. The synthesis rate of the diamond prepared by the technology is improved by 10-20%.
Description of the embodiments
The following describes the embodiments of the present invention in further detail by way of specific embodiments.
The embodiment of the invention provides a method for preparing diamond by extracting carbon from animals, which comprises the following steps:
Carbonization of carbon sources
And (3) taking 100-300 g of animal carbon source, placing the animal carbon source in a drying oven, drying at 100-150 ℃, performing ball milling, placing the ball-milled powder in a crucible, placing the crucible in a pipe Ma Fulu, introducing argon gas into the crucible, preserving heat for 30-50 min at 600-1000 ℃, performing low-temperature carbonization, and performing high-temperature carbonization at 1500-2000 ℃ for 30-50 ℃.
Methane production
And placing the carbonized carbon in a tubular muffle furnace, and introducing hydrogen to react at 500-700 ℃ to prepare methane gas. On which methane is adsorbed by activated carbon. The desorbed methane is then collected by a drag-and-drop process.
Diamond preparation
Mixing the collected methane and hydrogen, and depositing on the surface of the diamond seed crystal by adopting a microwave CVD device to prepare the diamond monocrystal. Wherein the temperature in the chamber is 1100-1600 ℃, and the flow ratio of methane to hydrogen is 1-1.5:0.5-1.2. Performance verification [ unified format ]
Control group 1: control group 1 provides a method for synthesizing diamond directly in a hexahedral press after ball milling and mixing graphite and catalyst.
Test conditions: the diamonds according to the present invention were tested for abrasion ratio, impact resistance, microhardness, etc. with the diamonds provided in the control group 1, respectively, and the relevant test data are shown in table 1.
The abrasion ratio test method comprises the following steps: referring to JB-T3235-1999, under specified conditions, the ratio of the abrasive to the 80# grain size ceramic bond wheel silicon carbide parallel wheel, the ratio of the abrasion amount of the wheel M s (g) to the abrasion ratio of the composite sheet M j (g), is referred to as the composite sheet abrasion ratio E value, where e=m s(g)/Mj (g).
The method for testing the impact resistance comprises the following steps: the usual method is a gradient method, in which first 10 samples are subjected to a preliminary test to estimate the impact energy at 50% failure, on the basis of which an energy close to that at which the sample is broken by impact is selected, the first sample is subjected to impact, whether the sample is broken or not is observed, if it is broken, the second sample is subjected to impact by decreasing an energy value deltae, if it is not broken, a deltae is added, and so on and at least 20 samples are subjected to impact test repeatedly. Wherein the energy increment delta E can be increased according to 5-15% of the pre-tested breaking energy. E=h×g×m; m=m0+ [ delta ] M (a/n±0.5); a=Σ nizi, M0-experimental minimum drop weight mass; delta M drop weight is increased, kg; h drop height; g free acceleration; the number of times the mass of zi increases from M0, the total number of samples ni destroyed or not destroyed at Mi.
Hardness testing method: the pressing head is a very small diamond cone, and the cone angle is 136 DEG square cone pressing head (Vikers pressing head) by adopting a pressing method. Under the action of a certain load, the pressure head is vertically pressed into the surface of the tested sample to generate dents, and the pressure born by the unit area is the Vickers hardness. The calculation formula is as follows: hv= 1854.4P/d2, and Hv-Vickers hardness, P-load (gf), d-indentation diagonal length (μm) are described in the Vickers hardness test method.
Table 1 diamond performance test
| Sample source | Embodiments of the invention | Control group 1 |
| Abrasion ratio | 20870 | 18740 |
| Impact toughness (kJ) | 11.17 | 9.41 |
| Microhardness (HV) | 7560 | 6310 |
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (4)
1. A method for preparing diamond by extracting carbon from animals, comprising the steps of:
Carbonizing a carbon source: drying animal carbon source in a drying oven, ball milling, placing the ball-milled powder in a crucible, and placing the crucible in a tube Ma Fulu to be filled with argon gas for greedy treatment;
Methane preparation: and (3) placing the carbonized carbon in a tubular muffle furnace, and introducing hydrogen to react to prepare methane gas. On which methane is adsorbed by activated carbon. Subsequently, the desorbed methane is collected by a drawing process;
Preparing diamond: mixing the collected methane and hydrogen, and depositing on the surface of the diamond seed crystal by adopting a microwave CVD device to prepare the diamond monocrystal.
2. The method of preparing diamond by extracting carbon from an animal according to claim 1, wherein the step of carbonizing the carbon source comprises: carbonizing at a high temperature of 1500-2000 ℃ for 30-50 ℃.
3. A method of preparing diamond by extracting carbon from an animal as claimed in claim 1, wherein the methane preparing step comprises: and placing the carbonized carbon in a tubular muffle furnace, and introducing hydrogen to react at 500-700 ℃ to prepare methane gas. On which methane is adsorbed by activated carbon. The desorbed methane is then collected by a drag-and-drop process.
4. A method of preparing diamond by extracting carbon from an animal as claimed in claim 1, wherein the diamond preparing step comprises: mixing the collected methane and hydrogen, and depositing on the surface of the diamond seed crystal by adopting a microwave CVD device to prepare the diamond monocrystal. Wherein the temperature in the chamber is 1100-1600 ℃, and the flow ratio of methane to hydrogen is 1-1.5:0.5-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311782135.3A CN117904709A (en) | 2023-12-22 | 2023-12-22 | Method for preparing diamond by extracting carbon from animals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311782135.3A CN117904709A (en) | 2023-12-22 | 2023-12-22 | Method for preparing diamond by extracting carbon from animals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117904709A true CN117904709A (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311782135.3A Pending CN117904709A (en) | 2023-12-22 | 2023-12-22 | Method for preparing diamond by extracting carbon from animals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117904709A (en) |
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2023
- 2023-12-22 CN CN202311782135.3A patent/CN117904709A/en active Pending
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