Process and apparatus for purifying BNNT
US12172889B2 · kind B2 · utility
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4References
11Claims
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Key dates
| Filing date | Jul 11, 2019 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Apr 7, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/13
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a process and an apparatus for purifying boron nitride nanotube (BNNT) materials. The process involves the use of a halogen gas to remove halogen-reactive impurities from boron nitride nanotube (BNNT) materials in a single step with minimal interactions to produce structurally pristine BNNT. Gaseous byproducts are produced that 5 can be removed without the need for solution phase treatments. Yield efficiencies and purity of recovered BNNT are high compared to the other known methods of purification for BNNT material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.