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Micro-domain graphitic materials and method for producing same

a graphitic material and micro-domain technology, applied in the field of micro-domain graphitic materials and methods for producing same, can solve the problems of limited diffusion of absorption process and low production yield, and achieve the effect of large yield ra

Inactive Publication Date: 2009-11-19
N TEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a new method for making micro-domain graphitised materials, which can yield high amounts of material. The method can be used on an industrial scale and produces materials that consist of a novel, highly crystalline graphitic material. This material is made up of open conical carbon structures with specific angles. The rest of the micro-conical graphitised materials can be fullerenes, carbon nanotubes, or a mixture of these.

Problems solved by technology

However, in such materials, the absorption process is limited by diffusion.
A common problem with the present methods for synthesizing peas and graphitic materials is the little production yield.

Method used

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  • Micro-domain graphitic materials and method for producing same

Examples

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example 1

[0031]Heavy fuel oil was heated to 1600° C. and introduced in the reactor by use of the self-invented axial aligned nozzle at a feed rate of 67 kg per hour. The reactor pressure was kept at 2 bar. Hydrogen was employed as plasma gas, and the plasma gas feed rate was 350 Nm3 / h, while the gross power supply from the plasma generator was 620 kW. This resulted in a plasma gas enthalpy of 1.8 kWh / Nm3 H2. The time elapsed from the atomized oil was introduced until the product left the reactor was approximately 0.23 seconds.

[0032]The resulting carbon black was traditional amorphous of N-7xx quality. The volatile content of the carbon black was measured to 0.6%.

example 2

[0033]In this example the oil feed rate, the hydrogen plasma gas enthalpy as well as the residence time was tuned in such a direction that the evaporated hydrocarbons did not achieve pyrolysis temperature during the first cycle. The residence time of the hydrocarbons during the first cycle through the reactor was minimized by increasing the oil and plasma gas feed rate.

[0034]Heavy fuel oil was heated to 160° C. and introduced in the reactor by use of the self-invented axial aligned nozzle at a feed rate of 115 kg per hour. The reactor pressure was kept at 2 bar. The hydrogen plasma gas feed rate was 450 Nm3 / h, while the gross power of supply from the plasma generator was 1005 kW. This resulted in plasma gas enthalpy of 2.2 kWh / Nm3H2. The time elapsed from the oil was introduced until the PAHs left the reactor was approximately 0.16 seconds.

[0035]The resulting PAHs were reintroduced into the reactor in the plasma-are zone to produce a micro-domain graphitic material, with a yield hig...

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Abstract

This invention relates to a method for producing micro-domain graphitic materials by use of a plasma process, and to novel micro-conical graphitic materials. By micro-domain graphitic material we mean fullerenes, carbon nanotubes, open conical carbon structures (also named micro-cones), preferably flat graphitic sheets, or a mixture of two or all of these. The novel carbon material is open carbon micro-cones with total disclination degrees of 60° and / or 120°, corresponding to cone angles of respectively 112.9° and / or 83.6°.

Description

[0001]This application is a continuation-in-part of prior application Ser. No. 09 / 400,530.FIELD OF THE INVENTION[0002]This invention relates to a method for producing micro-domain graphitic materials by use of a plasma process, and for producing novel micro-conical graphitic materials. By micro-domain graphitic materials we mean fullerenes, carbon nanotubes, open conical carbon structures (also named micro-cones), preferably flat graphitic sheets, or a mixture of two or all of these. The novel carbon material is open carbon micro-cones with total disclination degrees 60° and / or 120°, corresponding to cone angles of respectively 112.9° and / or 83.6°.BACKGROUND OF THE INVENTION[0003]There is currently an intense interest in novel carbon materials due to their unique and novel properties. For instance, the carbon materials may be useful to achieve high hydrogen energy storage, for use in purification processes as well as for different applications within the electrical / pharmaceutical se...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C01B31/04C01B31/02
CPCB82Y30/00B82Y40/00C01B31/04C01B31/0226C01B31/0293C01B31/0213Y10S977/844C01B32/152C01B32/16C01B32/18C01B32/20C01B32/154C01B32/205
Inventor LYNUM, STEINARHUGDAHL, JANHOX, KETILHILDRUM, RAGNENORDVIK, MAGNE
Owner N TEC
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