Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Reexamination Certificate
2007-07-31
2007-07-31
Hendrickson, Stuart (Department: 1754)
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
C977S843000
Reexamination Certificate
active
10630054
ABSTRACT:
A method for growing single-wall carbon nanotubes involves preparing a catalyst comprising catalytic metals, iron and molybdenum, and magnesium oxide support material and contacting the catalyst with a gaseous carbon-containing feedstock at a sufficient temperature and for a sufficient contact time to make single-wall carbon nanotubes. The weight ratio of iron and molybdenum can range from about 2 to 1 to about 10 to 1 and the metals loading up to about 10 wt % of the MgO. The catalyst can be sulfided. Methane is a suitable carbon-containing feedstock. The process can be conducted in batch, continuous or semi-continuous modes, in reactors, such as a transport reactor, fluidized bed reactor, moving bed reactors and combinations thereof. The process also includes making single-wall carbon nanotubes with catalysts comprising at least one Group VIB or Group VIIIB metal on supports such as magnesia, zirconia, silica, and alumina, where the catalyst is sulfided.
REFERENCES:
patent: 5102647 (1992-04-01), Yamada et al.
patent: 6333016 (2001-12-01), Resasco et al.
patent: 6413487 (2002-07-01), Resasco et al.
patent: 6761870 (2004-07-01), Smalley et al.
patent: 6955800 (2005-10-01), Resasco et al.
patent: WO00/17102 (2000-03-01), None
patent: WO00/73205 (2000-12-01), None
patent: WO01/94260 (2001-12-01), None
patent: WO03/037792 (2003-05-01), None
Tang et al.,Chemical Physics Letters350:19-26 (2001).
Flahaut et al.,J. Mater. Chem.10:249-252 (2000).
Qingwen et al.,J. Mater. Chem.12:1179-1183 (2002).
Su et al.,Chemical Physics Letters322:321-326 (2000).
Willems et al.,Applied Catalysis A: General229:229-233 (2002).
Bacsa et al.,Chemical Physics Letters323:566-571 (2000).
Colomer et al.,Chemical Physics Letters317:83-89 (2000).
Bacsa et al.,J. Am. Ceram. Soc.85:2666-69 (2002).
PCT/US03/24012 Partial International Search Report (Jul. 27, 2005).
Kitiyanan et al.,Chemical Physics Letters317:497-503 (Feb. 4, 2000).
Hafner et al.,Chemical Physics Letters296:195-202 (Oct. 30, 1998).
Cheng et al.,Applied Physics Letters72:3282-3284 (Jun. 22, 1998).
Grosboll Martin P.
Smith Kenneth A.
Yang Yuemei
Carbon NanoTechnologies, Inc.
Hendrickson Stuart
Williams Morgan & Amerson P.C.
LandOfFree
Method for making single-wall carbon nanotubes using... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making single-wall carbon nanotubes using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making single-wall carbon nanotubes using... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3799588