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Title: Process for the removal of impurities from combustion fullerenes

Abstract

The invention generally relates to purification of carbon nanomaterials, particularly fullerenes, by removal of PAHs and other hydrocarbon impurities. The inventive process involves extracting a sample containing carbon nanomaterials with a solvent in which the PAHs are substantially soluble but in which the carbon nanomaterials are not substantially soluble. The sample can be repeatedly or continuously extracted with one or more solvents to remove a greater amount of impurities. Preferred solvents include ethanol, diethyl ether, and acetone. The invention also provides a process for efficiently separating solvent extractable fullerenes from samples containing fullerenes and PAHs wherein the sample is extracted with a solvent in which both fullerenes and PAHs are substantially soluble and the sample extract then undergoes selective extraction to remove PAHs. Suitable solvents in which both fullerenes and PAHs are soluble include o-xylene, toluene, and o-dichlorobenzene. The purification process is capable of treating quantities of combustion soot in excess of one kilogram and can produce fullerenes or fullerenic soot of suitable purity for many applications.

Inventors:
;
Issue Date:
Research Org.:
TDA Research, Inc., Wheat Ridge, CO (Unites States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175445
Patent Number(s):
6923915
Application Number:
10/233,010
Assignee:
TDA Research, Inc. (Wheat Ridge, CO)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
DOE Contract Number:  
FG03-98ER82692
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Alford, J. Michael, and Bolskar, Robert. Process for the removal of impurities from combustion fullerenes. United States: N. p., 2005. Web.
Alford, J. Michael, & Bolskar, Robert. Process for the removal of impurities from combustion fullerenes. United States.
Alford, J. Michael, and Bolskar, Robert. Tue . "Process for the removal of impurities from combustion fullerenes". United States. https://www.osti.gov/servlets/purl/1175445.
@article{osti_1175445,
title = {Process for the removal of impurities from combustion fullerenes},
author = {Alford, J. Michael and Bolskar, Robert},
abstractNote = {The invention generally relates to purification of carbon nanomaterials, particularly fullerenes, by removal of PAHs and other hydrocarbon impurities. The inventive process involves extracting a sample containing carbon nanomaterials with a solvent in which the PAHs are substantially soluble but in which the carbon nanomaterials are not substantially soluble. The sample can be repeatedly or continuously extracted with one or more solvents to remove a greater amount of impurities. Preferred solvents include ethanol, diethyl ether, and acetone. The invention also provides a process for efficiently separating solvent extractable fullerenes from samples containing fullerenes and PAHs wherein the sample is extracted with a solvent in which both fullerenes and PAHs are substantially soluble and the sample extract then undergoes selective extraction to remove PAHs. Suitable solvents in which both fullerenes and PAHs are soluble include o-xylene, toluene, and o-dichlorobenzene. The purification process is capable of treating quantities of combustion soot in excess of one kilogram and can produce fullerenes or fullerenic soot of suitable purity for many applications.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {8}
}

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Works referenced in this record:

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