Covalent Triazine Frameworks Prepared from 1,3,5-Tricyanobenzene

A novel covalent triazine framework (CTF-0) was prepared by trimerization of 1,3,5-tricyanobenzene in molten ZnCl₂. The monomer/ZnCl₂ ratio, the reaction time, and temperature significantly influence the structure and porosity of such networks. XRD measurements revealed that crystalline frameworks can be formed with surface areas around 500 m²·g^–1 and high CO₂ uptakes. Increasing the reaction temperature yielded an amorphous material with an enlarged surface area of 2000 m²·g^–1. This material showed good catalytic activity for CO₂ cycloaddition