Production of sulfur nanocrystal through dilution crystallization

Selecting process conditions for the dilution crystallization of sulfur in ethanol +toluene mixture for production of sulfur nanocrystals is studied in the present work. The crystallization process is carried out using the anti-solvent technique to obtain sulfur precipitations in solution. First of all, the solubility of sulfur in toluene was determined as a solvent and then sulfur particles were produced by using crystallizer, anti solvent (ethanol) and mechanical mixer as a producer of supper saturation. Since the purpose is to produce nano particles, we have determined the shape and size of particles by filtrating crystals from solution and performing SEM and TEM tests. The feasibility of the proposed scheme and operating conditions are confirmed by experimental studies in a crystallizer at 25 0 C constant temperature.

Keywords:

Anti-solvent , dilution Crystallization , Solubility , super saturation , sulfur