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US 2017/0362190 A1Published application
Phosphoric Acid Loaded Covalent Organic Framework And A Process For The Preparation Thereof
AssigneeCouncil of Scientific and Industrial Research
InventorsRahul Banerjee, Suman Chandra, Tanay Kundu, Sharath Kandambeth
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Abstract
The present invention is directed to a process for the preparation of phosphoric acid loaded covalent organic framework (PA@Tp-Azo and PA@Tp-Stb) with high stability and high proton conductivity.
Claims5
A process for preparing phosphoric acid loaded covalent organic framework with high stability and high proton conductivity comprising the steps of:
- a) dispersing 1,3,5-triformylphloroglucinol (Tp) and diamine compound in solvent by ultrasonication for 10 minutes followed by degassing the solution;
- b) heating the solution as obtained in step (a) in oven for 3-5 days at temperature in the range of 100 to 120° C. followed by washing and drying under vacuum at temperature in the range of 120 to 150° C. for period in the range of 18 to 12 h to obtain desired covalent organic framework with at least one basic anchoring site;
- c) immersing the covalent organic framework material of step (b) in H3PO4 for period in the range of 1 h to 5 h followed by washing to remove the surface absorbed phosphoric acid and activating overnight for period in the range of 12 to 18 hr at temperature in the range of 60 to 80° C. under vacuum to obtain phosphoric acid loaded covalent organic framework.
Dependencies are inferred from the claim text.