Preparation method of nitrogen-doped hierarchical-porous carbon-loaded nanometer Pd catalyst and product and application thereof
US11772076B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2020 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Jun 11, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are a nitrogen-doped hierarchical-porous carbon-loaded nano-Pd catalyst and a preparation method thereof. The preparation method includes preparing nitrogen-doped hierarchical-porous carbon, mixing the nitrogen-doped hierarchical-porous carbon with water, adjusting a pH value of the mixed solution to be alkaline, mixing the mixed solution with a Pd metal precursor aqueous solution, and then adding a reducing agent to obtain the nitrogen-doped hierarchical-porous carbon-loaded nano-Pd catalyst after reduction. The prepared nitrogen-doped hierarchical-porous carbon-loaded nano-Pd catalyst includes a nitrogen-doped porous carbon material carrier with hierarchical pores and Pd metal nanoparticles loaded in the hierarchical pores of the carrier. The Pd metal nanoparticles have a size of 2˜14 nm and a regular polyhedron shape. The nitrogen-doped hierarchical-porous carbon-loaded nano-Pd catalyst has excellent catalytic performance, especially has ultra-high conversion rate, selectivity and cycle stability in the selective hydrogenation reaction of unsaturated ketones, and is a key to open a new synthetic route of vitamin E.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.