Phosphoric acid loaded covalent organic framework and a process for the preparation thereof
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.
1. A phosphoric acid loaded covalent organic framework comprising phosphoric acid (PA) in the range of 2 to 6 (wt %) and covalent organic framework in the range of 94 to 98 (wt %) wherein covalent organic framework are selected from Tp (1,3,5-triformylphloroglucinol)-Azo (4,4′-azodianiline) or Tp-Stb (4,4-diaminostilbene).
2. The phosphoric acid loaded covalent organic framework as claimed in claim 1 , wherein proton conductivity of phosphoric acid loaded covalent organic framework (PA@Tp-Azo) is 9.9×10 −4 s/cm at 332K in 98% relative humidity (RH).
3. The phosphoric acid loaded covalent organic framework as claimed in claim 1 , wherein proton conductivity of phosphoric acid loaded covalent organic framework (PA@Tp-Azo) is 6.7×10 −5 s/cm at 340K in 0% relative humidity (RH).
4. The phosphoric acid loaded covalent organic framework as claimed in claim 1 , wherein proton conductivity of phosphoric acid loaded covalent organic framework (PA@Tp-Stb) is 2.3×10 −5 s/cm at 332K in 98% relative humidity (RH).