Title:
METHODS FOR PURIFYING CARBON MATERIALS
Document Type and Number:
WIPO Patent Application WO2005089422
Kind Code:
A3
Abstract:
Methods of purifying samples are provided that are capable of removing carbonaceous and noncarbonaceous impurities from a sample containing a carbon material having a selected structure. Purification methods are provided for removing residual metal catalyst particles enclosed in multilayer carbonaceous impurities in samples generate by catalytic synthesis methods. Purification methods are provided wherein carbonaceous impurities in a sample are at least partially exfoliated, thereby facilitating subsequent removal of carbonaceous and noncarbonaceous impurities from the sample. Methods of purifying carbon nanotube-containing samples are provided wherein an intercalant is added to the sample and subsequently reacted with an exfoliation initiator to achieve exfoliation of carbonaceous impurities.
Inventors:
DAILLY ANNE (US)
AHN CHANNING (US)
RACHID YAZAMI (US)
FULTZ BRENT T (US)
AHN CHANNING (US)
RACHID YAZAMI (US)
FULTZ BRENT T (US)
Application Number:
PCT/US2005/008897
Publication Date:
October 19, 2006
Filing Date:
March 16, 2005
Export Citation:
Assignee:
CALIFORNIA INST OF TECHN (US)
DAILLY ANNE (US)
AHN CHANNING (US)
RACHID YAZAMI (US)
FULTZ BRENT T (US)
DAILLY ANNE (US)
AHN CHANNING (US)
RACHID YAZAMI (US)
FULTZ BRENT T (US)
International Classes:
C01B31/00; C01B31/02; C01B31/04; C01B31/06; D01F9/12; D01F11/12; D06M11/83
Foreign References:
| US20030224168A1 | 2003-12-04 | |||
| US20020127171A1 | 2002-09-12 | |||
| US20050006623A1 | 2005-01-13 | |||
| US20040131859A1 | 2004-07-08 |
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