Influence of NaCl on Granulometric Characteristics and Polymorphism in Batch-Cooling Crystallization of Glycine
| Autor: | Neven Ukrainczyk, Martina Hrkovac, Jasna Prlić Kardum |
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| Rok vydání: | 2014 |
| Předmět: |
Diffraction
Scanning electron microscope Chemistry General Chemical Engineering Analytical chemistry Sieve analysis General Chemistry Crystal morphology Industrial and Manufacturing Engineering law.invention Crystallography Polymorphism (materials science) law Crystal size distribution Fourier transform infrared spectroscopy Crystallization additive batch crystallization glycine granulometric properties polymorphism |
| Zdroj: | Chemical Engineering & Technology. 38:139-146 |
| ISSN: | 0930-7516 |
| Popis: | The effect of NaCl added in different quantities on thermodynamic properties, granulometric characteristics, and structure of glycine in a crystallization process was investigated. Solubilities of a- and g-polymorphs in the presence of varying amounts of NaCl were analyzed. In order to examine the impact of the additive on granulometric properties of glycine, crystal morphology was examined by observing crystals under a scanning electron microscope. Crystal size distribution was determined by sieve analysis. By X-ray diffraction analysis, the critical concentration of NaCl at which the structure of glycine changed, could be defined. The purity of obtained polymorphs was confirmed by Fourier transform infrared spectroscopy. |
| Databáze: | OpenAIRE |
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