@article{article_1515088, title={Development of a Silica-Organic Framework Ionic Solid Bronsted Acid Catalyst for the Synthesis of 2,4,5-trisubstituted Imidazole Derivatives}, journal={Journal of the Turkish Chemical Society Section A: Chemistry}, volume={12}, pages={1–14}, year={2025}, DOI={10.18596/jotcsa.1515088}, author={Alshook, Noor Abbas and Hanoon, Haitham Dalol and Mihsen, Hayder Hamied}, keywords={Rice husks, Heterogeneous solid acid, Catalyst, Brønsted acid, Imidazole derivatives, Aldehydes.}, abstract={Heterogeneous Bronsted acid is one of the most promising compounds that can be used as a catalyst in chemical production, and that can certainly have a positive impact on the environment. This research includes the preparation of heterogeneous Bronsted acid by using rice hulls as a starting material. The prepared acid was characterized by FTIR, XRD, TGA, SEM-EDX, TEM, and elemental analysis. The FTIR results showed the presence of N-H and S=O absorption bands within the expected range in prepared Bronsted acid. The specific surface area of the catalyst determined by Brunauer-Emmett-Teller (BET) using the nitrogen adsorption method is 205.42 m2/g, and the average pore diameters are 3.69 nm, 2,4,5-Trisubstituted imidazole derivatives were prepared by reacting substituted aldehydes with benzil and ammonium acetate in the presence of a solid acid catalyst. The main advantages of this method are safe, cheap, and short reaction conditions. In addition, the prepared catalyst can be reused.}, number={1}, publisher={Turkish Chemical Society}, organization={This project did not receive any funding}