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High carbon fullerene preparation method

A technology of fullerene and carbon source, which is applied in the field of preparation of fullerene, can solve problems such as residence theory calculation, and achieve the effect of simple method and easy control

Inactive Publication Date: 2008-02-27
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty of obtaining sufficient high-purity high-carbon fullerenes, the structure, symmetry, and curvature of C 60 The structures and properties of other high-carbon fullerenes that are very different are poorly understood, and many studies remain in theoretical calculations and predictions. Therefore, finding new methods to synthesize and prepare high-carbon fullerenes in large quantities has become a technical bottleneck. Once a breakthrough is made, it may open A door leading to the research of many high-carbon fullerenes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The 532nm frequency-doubled laser beam (pulse width 10ns, pulse frequency 10) is output by the Nd:YAG solid-state laser, which passes through the optical lens after being refracted by the mirror, and focuses on the surface of the graphite target immersed in the flowing xylene, and makes the flow Xylene flooded the graphite target surface throughout. Pure nitrogen was slowly passed into the reactor. The cumulative preparation time was 10 hours, and about 708 ml of a brown-red transparent xylene solution was obtained. The xylene was evaporated under reduced pressure in a rotary evaporator to obtain 23 mg of a solid product containing mixed fullerenes. After separation and purification, 0.55 mg of mixed fullerenes was obtained, and mass spectrometry and high-pressure liquid chromatography showed that 20.3% of high-carbon fullerenes were contained therein.

Embodiment 2

[0023] The Nd:YAG solid-state laser outputs a 532nm frequency-doubled laser beam (pulse width 10ns, pulse frequency 10), which passes through the optical lens after being refracted by the mirror, and focuses on graphite immersed in flowing turpentine (containing 0.5% tungsten sulfide) target surface, and flow turpentine to flood the graphite target surface. Pure nitrogen was slowly passed into the reactor. The cumulative preparation time was five hours, and about 850 ml of a yellow-brown transparent turpentine solution was obtained. The turpentine was evaporated under reduced pressure in a rotary evaporator to obtain 16.0 mg of a solid product containing mixed fullerenes. After separation and purification, 0.80 mg of mixed fullerenes was obtained, and mass spectrometry and high-pressure liquid chromatography showed that it contained 28.8% high-carbon fullerenes.

Embodiment 3

[0025]The Nd:YAG solid-state laser outputs a 532nm frequency-doubled laser beam (pulse width 10ns, pulse frequency 10), passes through the optical lens after being refracted by the mirror, and focuses on the graphite immersed in flowing benzene (dissolved with 10.0% naphthalene) (containing 10.0% terpene resin) target surface, and keep flowing benzene flooding the graphite target surface. Pure nitrogen was slowly passed into the reactor. The cumulative preparation time was ten hours, and about 720ml of a yellowish-brown transparent benzene solution was obtained. The benzene and naphthalene were evaporated under reduced pressure in a rotary evaporator to obtain 19mg of a solid product containing mixed fullerenes. After separation and purification, 0.10 mg of mixed fullerenes was obtained, and mass spectrometry and high-pressure liquid chromatography showed that 19.0% of high-carbon fullerenes were contained therein.

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Abstract

The invention discloses a making method of Flue alkene, which comprises the following steps: adapting solid laser to bombarding the immersed carbon source solid target surface by continual flow alkene and terpenes liquid; generating nanometer carbon sol with high-carbon Flue alkene; separating and purifying to obtain the high-carbon Flue alkene. The carbon source solid target is composed of carbon or carbon and polymeric compound with aromatic ring and terpene structure; the carbon quantity occupies 90.0-100.0 percent of total solid target weight, which is graphite, carbon black, active carbon or coke; the polymer occupies 0-10.0 percent of total solid target weight, which is polystyrene, oil resin, terpene resin and tar resin; the metal salt is added in the carbon source solid target or flow liquid-phase, which doesn't exceed 30 percent of total weight.

Description

Technical field: [0001] The invention relates to a method for preparing fullerenes (Fullerences). Background technique: [0002] Since the discovery of fullerenes by smally et al. (Kroto H.W., Heath J.R., O'Brien S.C., Curl R.F. & Smalley R.E., Nature, 1985, 318(6042): 162-163) and Kratschmer et al. (solved C 60 W. Kratschmer, Lowell D. Lamb, K. Fostiropoulos & Donald R. Huffman, Solid C. after the mass preparation method 60 : A new form of carbon, Nature, 1990, 347(6291): 354-358), because fullerene has a special cage structure composed of pure carbon, it indicates that there must be new properties unknown to many people, and soon In the world set off a fullerene research upsurge. So far, the research on fullerenes has shown that fullerenes may have great application value in important scientific and technological fields such as optoelectronics, superconductivity, energy, biology, and medicine, so they have attracted great attention from all countries in the world and lis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/00C01B31/02
Inventor 章文贡章仪
Owner FUJIAN NORMAL UNIV
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