Title of Invention

CARBON NANOTUBES AND THEIR SYNTHESIS

Abstract A process for the synthesis of single walled and multiwalled nanotubes comprising the steps of heating a furnace to 500°C in argon flow; allowing hydrogen gas into the furnace for almost 30 min; stopping the hydrogen flow and raising the temperature of the furnace to the deposition temperature in the range825 -860 (for production of alloy eneapsulated MWNTS) or 930-970°C (for production of SWNTS); allowing methane into the furnace for about 30 min; stopping the methane flow and the furmace cooled to room temperature, the argon flow being maintained throughout the process with the generation of hydrogen as a byproduct; removing the quartz reactor and quartz boat with nanotube deposit from the furnace
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Documents:


Patent Number 234373
Indian Patent Application Number 1129/CHE/2005
PG Journal Number 29/2009
Publication Date 17-Jul-2009
Grant Date 26-May-2009
Date of Filing 12-Aug-2005
Name of Patentee INDIAN INSTITUTE OF TECHNOLOGY
Applicant Address IIT P.O., CHENNAI 600 036,
Inventors:
# Inventor's Name Inventor's Address
1 DR.SUNDARA RAMAPRABHU DEPARTMENT OF PHYSICS, IIT, CHENNAI 600 036,
2 MANCHERI MANIKOTH SHAIJUMON DEPARTMENT OF PHYSICS, IIT, CHENNAI 600 036,
PCT International Classification Number H0IL 021/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA