Preparation method of COF-5 crystal

US11465124B2 · kind B2 · utility

Assignee

• WUHAN UNIVERSITY OF TECHNOLOGY · CN

Inventors

• Yueli Liu · 红钢城街道, CN
• WEN-YANG CHEN · 红钢城街道, CN
• Zifan Yang · 红钢城街道, CN
• Ziwei Wang · Meekrap-oord, CN

Key dates

• Filing date: Dec 14, 2020
• Grant date: Oct 11, 2022
• Expiry date: Dec 31, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2220/4812
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A preparation method for covalent organic framework 5 (COF-5) includes: adding 2,3,6,7,10,11-hexahydroxytriphenylene and 1,4-phenylenebisboronic acid to a mixed solution of 1,3,5-trimethylbenzene and 1,4-dioxane to form a mixture in the anhydrous and oxygen-free environment; and the addition ratio of 2,3,6,7,10,11-hexahydroxytriphenylene:1,4-phenylenebisboronic acid:1,3,5-trimethylbenzene:1,4-dioxane is 0.02-0.8 mmol:0.08-1.4 mmol:10-15 mL:10-15 mL; sealing the mixture in an airtight container; and obtaining a uniform dispersion solution after shaking the container for wholly mixing the components; heating the dispersion solution to a temperature ranging from 80-100° C.; reacting for a period of time ranging from 72-120 h; and obtaining a precipitate after the reaction; and washing the precipitate, drying the precipitate in vacuum, and heating the precipitate at a temperature ranging from 200-300° C. for a period of time ranging from 1-3 h with a protective atmosphere to obtain COF-5 crystal.