Liquid-Phase Synthesis of Cyanuric Acid from Urea

Dong-Mei She, Hai-Lin Yu, Qi-Liang Huang, Fen-Ming Li, Chun-Jiu Li
2010 Molecules  
The focus of this paper was to identify a cheaper solvent from among diesel fuel, kerosene, sulfolane or a mixture of sulfolane and cyclohexanol for the preparation of cyanuric acid heterocyclization of urea. To obtain a higher yield, the effects of catalyst (sodium, ammonium, calcium and zinc salts) and temperature (160 °C to 220 °C) on the trimerization of urea were also carefully studied. We established the optimal reaction conditions and further validated them in our scale-up experiments.
doi:10.3390/molecules15031898 pmid:20336020 fatcat:6zzeixgdnrhotdyiuwzgg6staa