Catalysts and processes for tunable base-grown multiwalled carbon nanotubes
US11040876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2018 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Sep 18, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2203/1241
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In various aspects, the present disclosure is directed to methods and compositions for the simultaneous production of carbon nanotubes and hydrogen gas from lower hydrocarbon comprises methane, ethane, propane, butane, or a combination thereof utilizing the disclosed catalysts. In various aspects, the disclosure relates to methods for COx-free production of hydrogen with concomitant production of carbon nanotubes. Also disclosed are methods and compostions for selective base grown carbon nanotubes over a disclosed catalyst composition. In a further aspect, the disclosure relates to mono, bimetallic, and trimetallic catalysts comprising a 3d transition metal (e.g., Ni, Fe, Co, Mn, Cr, Mo, and combinations thereof) over a support material selected from a silica, an alumina, a zeolite, titatnium dioxide, and combinations thereof. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.