Hydrogen bond induced high stability porous covalent organic gel material and preparation method thereof
US11897972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2021 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Feb 18, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/083
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A hydrogen bond induced high stability porous covalent organic gel material and a preparation method thereof are provided. The method comprises: dissolving tetrakis(4-carboxyphenyl)silane in methanol to obtain solution A; adding concentrated sulfuric acid to the solution A, then water-bath heating and re-flowing to obtain a solution B; evaporating the solution B, dissolving remaining powder with an ethyl acetate, washing and drying, filtering and then evaporating the filtrate until crystallization to obtain a colorless solid C; dissolving the colorless solid C and hydrazine hydrate in methanol, water-bath re-fluxing, filtering and collecting white powder, washing and drying to obtain a white solid D; adding the white solid D and 1,4-Phthalaldehyde to N,N-dimethyl-formamide, adding trifluoroacetic acid, and then getting the desired material. The material is has high synthesis efficiency, abundant functional groups, a large specific surface area, a good adsorption performance, and excellent chemical stability and thermal stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.