Method for preparing boron nitride nanotubes
US10584032B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jul 20, 2017 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Jul 20, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a method for preparing boron nitride nanotubes, the method including: injecting a boron-metal catalyst composite into a reaction chamber; injecting a nitrogen precursor into the reaction chamber; producing a decomposition product of the boron-metal catalyst composite in a gas state by irradiating the boron-metal catalyst composite with a carbon dioxide laser or a free electron laser; and forming boron nitride nanotubes by reacting the decomposition product of the boron-metal catalyst composite in the gas state with the nitrogen precursor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.