Platinum/carbon nanotube catalyst, the preparation process and use thereof
US9433926B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2015 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Mar 30, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A platinum/carbon nanotube catalyst applicable to heterogeneous asymmetric hydrogenation, which is fabricated by supporting platinum on carbon nanotube carriers, and prepared by the steps of: heating purified carbon nanotubes in nitric acid, filtering and washing the same with water until pH value of the filtrate becomes neutral, drying the carbon nanotubes; immersing the carbon nanotube carriers obtained in an aqueous chloroplatinic acid solution and carrying out ultrasonic treatment at room temperature; immersing the mixture of the carbon nanotubes and the aqueous chloroplatinic acid solution under stirring; drying the material by heating to 110° C. from room temperature and maintaining this temperature; grinding the product to fine powders, reducing the fine powders with an aqueous sodium formate solution under a heating condition, filtering and washing the product with deionized water, and drying the product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.