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Ppolynuclear aromatic hydrocarbons for fullerene synthesis in flames

A hydrocarbon, polycyclic aromatic technology for fullerenes, nanotechnology for materials and surface science, nanocarbons, etc.

Inactive Publication Date: 2004-11-24
先锋奈米碳素株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these patents do not teach or suggest that the use of naphthalene, other polycyclic aromatic hydrocarbons, or any specific product of coal or petroleum would significantly improve results in the preparation of fullerenes

Method used

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Embodiment Construction

[0045]The present invention is based, at least in part, on the discovery that fullerene synthesis by flame combustion increases in yield after employing polycyclic aromatic hydrocarbon fuels or feedstocks, particularly those containing polycyclic aromatic hydrocarbons. greatly improved. Most combustion methods focus on the production of fullerenes from sooting benzene flames, although up to 20% by weight of extractable fullerenes can be recovered from soot after benzene combustion, but fullerenes The yield (expressed as the total conversion of the hydrocarbon feedstock carbons (benzene ring carbons) to solvent-extractable fullerene carbons) was only 0.5%. Some patent applicants have also proved that benzene is not the best fuel when the combustion method is used to synthesize fullerenes. They used PAHs-containing hydrocarbon raw materials, so that the yield of fullerenes has been significantly improved (50% to 100% increase).

[0046] The middle distillates of coal tar disti...

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Abstract

This invention provides improved methods for combustion synthesis of carbon nanomaterials, including fullerenes, employing multiple-ring aromatic hydrocarbon fuels selected for high carbon conversion to extractable fullerenes. The multiple-ring aromatic hydrocarbon fuels include those that contain polynuclear aromatic hydrocarbons. More specifically, multiple-ring aromatic hydrocarbon fuels contain a substantial amount of indene, methylnapthalenes or mixtures thereof. Coal tar and petroleum distillate fractions provide low cost hydrocarbon fuels containing polynuclear aromatic hydrocarbons, including without limitation, indene, methylnapthalenes or mixtures thereof.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 60 / 316,314, filed August 30, 2001, and US Application No. 10 / 099,095, filed March 15, 2002. These two patent applications are incorporated herein by reference to the extent that they do not contradict the disclosures of this application. Background technique [0003] Fullerene is a closed cage carbon compound containing 5-membered carbocycle and 6-membered carbocycle, (see: Curl et al. (1991) Sci.Am.10, page54-63; Kratschmer et al. (1990) Nature 347:354-358 ; Diederich et al. (1991) Science 252:548-551). Fullerenes have a wide range of potential commercial applications: they can be used not only as additives for drugs and cosmetics, but also as additives for photoresists and electronic resists, proton-conducting membranes for fuel cells, photolimiting materials and components, Anodes for lithium batterie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12C01B31/02D01F9/127
CPCC01B31/0206C01B31/0213D01F9/1276B82Y30/00B82Y40/00C01B32/15C01B32/156C01B32/154
Inventor J.迈克尔·奥尔福德迈克尔·D·迪讷
Owner 先锋奈米碳素株式会社
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