Supercritical Antisolvent Micronization of Cyclotrimethylenetrinitramin: Influence of the Organic Solvent
| Autor: | Hyoun-Soo Kim, Youn-Woo Lee, Young Ho Lee, Byung-Chul Lee, Byoung-Min Lee, Jinseong Jeong, Hwayong Kim |
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| Rok vydání: | 2009 |
| Předmět: |
Chromatography
General Chemical Engineering Analytical chemistry General Chemistry Industrial and Manufacturing Engineering Supercritical fluid Solvent chemistry.chemical_compound Differential scanning calorimetry chemistry Particle-size distribution Dimethylformamide Particle Particle size Micronization |
| Zdroj: | Industrial & Engineering Chemistry Research. 48:11162-11167 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie900448w |
| Popis: | A supercritical antisolvent (SAS) process was used to prepare micronized cyclotrimethylenetrinitramin (RDX). This study examined the influence of different solvents at a fixed temperature (50 °C) and pressure (13.7 or 15 MPa) on the morphology, particle size (PS), and particle size distribution (PSD) using a semicontinuous SAS process. Dimethyl sulfoxide (DMSO), dimethylformamide (DMF), acetone (AC), acetonitrile (ACN), n-methyl 2-pyrrolidone (NMP), and cyclohexanone (CHN) were used as solvents. The recrystallized RDX particles were characterized by scanning electron microscopy (SEM), particle size analyzer (PSA), Fourier transform infrared (FT-IR) spectroscopy, and differential scanning calorimetry (DSC). Depending on the solvent used, the recrystallized RDX particles showed a variety of morphologies, particle sizes, and particle size distributions (PSD). The mean particle size of the recrystallized RDX ranged from 2.6 to 17.7 μm. The enthalpy change (ΔH = 583.4, 847.7, 967.1, 823.9, 1131, and 1620 J/g) ... |
| Databáze: | OpenAIRE |
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