Use and process for production of nanotubes
AssigneeEidg. Technische Hochschule Zurich
InventorsReinhard Nesper, Michael Spahr, Markus Niederberger, Petra Bitterli
Life of this patent
Estimating the term…
Abstract
Separable nanotubes are made from a transition metal oxide, preferably from a vanadium oxide of variable valence. They show a greater oxidation resistance than the carbon-based nanotubes known so far and offer many new and economic applications. The inventive nanotubes clearly show oxidation-reduction activities and are particularly suited as an active material for catalytic reactions.
Claims16
A process for the production of nanotubes comprising transition metallic oxide comprising the following process steps:
- production of a solution from a neutral tenside molecule and one transition metallic alkoxide,
- hydrolyzation of the solution and aging of a precipitation,
- heating of the precipitation,
- wherein the neutral tenside molecule is hexadecylamine.
A process for the production of nanotubes comprising metallic oxide comprising the following process steps:
- production of a solution from a neutral tenside molecule and one transition metallic alkoxide,
- hydrolyzation of the solution and aging of a precipitation,
- heating of the precipitation,
- wherein the transition metallic alkoxide is a vanadium alkoxide or molybdenum alkoxide.
A process for the production of nanotubes comprising transition metallic oxide comprising the following process steps:
- production of a solution from a neutral tenside molecule and one transition metallic alkoxide,
- hydrolyzation of the solution and aging of a precipitation,
- heating of the precipitation,
- wherein the precipitation is heated in stages at a temperature range of approximately 70° C. to 190° C.
A process for the production of nanotubes comprising transition metallic oxide comprising the following process steps:
- production of a solution from a neutral tenside molecule and one transition metallic alkoxide,
- hydrolyzation of the solution and aging of a precipitation,
- heating of the precipitation,
- wherein the nanotubes have intermediate layers containing template molecules, and the template molecules in the intermediate layers are removed by cation exchange.
A process for the production of nanotubes comprising transition metallic oxide comprising the following process steps:
- production of a solution from a neutral tenside molecule and one transition metallic alkoxide,
- hydrolyzation of the solution and aging of a precipitation,
- heating of the precipitation,
- wherein the precipitation is aged about 24 hours.
A process of catalyzing comprising carrying out catalytic reactions with nanotubes comprising a mixed valence vanadium oxide.
A process of redox reactions in high capacity capacitors comprising carrying out redox reactions in high capacity capacitors with nanotubes comprising a mixed valence vanadium oxide.
A process of redox reactions in batteries comprising carrying out redox reactions in batteries with nanotubes comprising a mixed valence vanadium oxide.
A process of exchange reaction, comprising carrying out an exchange reaction with nanotubes comprising a mixed valence vanadium oxide, wherein the reaction is an ion exchange, an absorption of electromagnetic waves or an electric excitation reaction.
Dependencies are inferred from the claim text.