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Catalyst for synthesizing black artificial diamond and preparation thereof as well as black artificial diamond and preparation thereof

A technology of artificial diamond and catalyst, applied in the direction of metal/metal oxide/metal hydroxide catalyst, the process of applying ultra-high pressure, and the method of chemically changing substances by using atmospheric pressure, which can solve the problem of single catalyst, Achieve the effects of uniform chemical composition, improved efficiency, and good catalytic effect

Active Publication Date: 2016-08-10
HUBEI EXIN DIAMOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The first object of the present invention is to provide a kind of black artificial diamond synthetic catalyst, described catalyzer has used the raw material formula of Ni, Co, Ti, Fe creatively, and does not need to add boron compound in the reaction process of preparing diamond by catalysis, thereby It solves the technical problem that the catalyst for preparing black diamond is single in the prior art (the boron compound must be added in the catalytic reaction to prepare black diamond)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] According to percentage by weight, Ni25%, Co1%, Ti1% and the balance of Fe, weigh the raw materials Ni, Co, Ti, Fe with a purity of 99.9%, mix the raw material metals, place them in an intermediate frequency furnace, and mix the metals Melt into liquid; then, under the condition of water pressure of 50MPa-65MPa, use high-pressure water to crush and atomize the liquid metal into alloy powder, which is the black synthetic diamond synthesis catalyst of Example 1 of the present invention.

[0051] The catalyst in Example 1 was visually inspected, and it was found that the prepared catalyst particles were relatively uniform in size, and the proportion of 325- (that is, particles passing through a 325-mesh screen) could reach more than 80% of the total amount of the prepared catalyst.

[0052] The chemical composition of the catalyst in Example 1 was further analyzed, and the results showed that its alloy composition was Ni24.83%, Co0.97%, Ti0.95%, and the balance was Fe.

[...

Embodiment 2

[0056] By weight percentage, Ni30%, Co3%, Ti4%, and the rest of Fe, weigh the raw materials Ni, Co, Ti, Fe with a purity of 99.9%, mix the raw material metals, place them in an intermediate frequency furnace, and mix The metal is melted into liquid; then, under the condition of water pressure of 50MPa-65MPa, the liquid metal is crushed and atomized into alloy powder by using high-pressure water, which is the black synthetic diamond synthesis catalyst of Example 2 of the present invention.

[0057] The catalyst of Example 2 was visually inspected, and it was found that the prepared catalyst particles were relatively uniform in size, and the proportion of 325- (that is, the particles passing through the 325 mesh screen) could reach more than 80% of the total amount of the prepared catalyst.

[0058] Further analysis of the chemical composition of the catalyst in Example 2 shows that the alloy composition is Ni29.93%, Co2.97%, Ti3.92%, and the balance is Fe.

[0059] Screen the c...

Embodiment 3

[0062] By weight percentage, Ni29%, Co2%, Ti3%, and the rest of Fe, weigh the raw materials Ni, Co, Ti, Fe with a purity of 99.9%, mix the raw material metals, place them in an intermediate frequency furnace, and mix The metal is melted into liquid; then, under the condition of water pressure of 50MPa-65MPa, the liquid metal is crushed and atomized into alloy powder by using high-pressure water, which is the black synthetic diamond synthesis catalyst of Example 3 of the present invention.

[0063] The catalyst in Example 3 was visually inspected, and it was found that the prepared catalyst particles were relatively uniform in size, and the proportion of 325- (that is, particles passing through a 325-mesh screen) could reach more than 80% of the total amount of the prepared catalyst.

[0064] The chemical composition of the catalyst in Example 3 was further analyzed, and the results showed that its alloy composition was Ni28.91%, Co1.97%, Ti2.94%, and the balance was Fe.

[006...

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Abstract

The invention provides a catalyst for synthesizing a black artificial diamond. The catalyst has a novel raw material formula, and a boron compound does not need to be added in a catalytic reaction process, so that the technical problems in the prior art that the formula is single and a boron compound needs to be added in a catalytic reaction are solved. The catalyst has the advantages of high catalytic reaction efficiency and the like. Meanwhile, the invention further provides a preparation method of the catalyst. The method has the advantages of simplicity and convenience in operation, and can guarantee uniform chemical components and uniform grain diameter of prepared catalyst powder,. Furthermore, the invention further provides a preparation method of the black artificial diamond, and the method has the advantages of simplicity and convenience in operation and can guarantee good quality of the diamond. Furthermore, the invention provides the black artificial diamond. The diamond is prepared by the method provided by the invention and has the advantages of complete crystal form, high crystal integrity degree, high uniformity of crystal grain diameters and the like.

Description

technical field [0001] The invention relates to the field of synthetic diamond synthesis, in particular to a catalyst for synthesizing black synthetic diamond and its preparation, black synthetic diamond and its preparation. Background technique [0002] Diamond, also known as diamond, is a mineral composed of carbon, which is an allotrope of carbon. Diamond is the hardest substance among the many naturally occurring substances found on the earth. Diamond has a wide range of uses, such as: handicrafts, cutting tools in industry. [0003] Studies have found that the reason why diamonds have different colors is mainly caused by a certain amount of impurity elements contained in diamonds. Industrially, synthetic diamond is formed by the action of graphite and metal catalyst (synthetic diamond industry is called powder catalyst) under high temperature and high pressure. The common synthetic diamond is mostly light yellow or yellow. [0004] Black diamond, also known as black d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C01B31/06B01J3/06
CPCB01J3/062B01J21/063B01J23/755
Inventor 向后奎何南兵王腾吉赵亚良
Owner HUBEI EXIN DIAMOND TECH
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