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UPORABA VIEDMA ZORENJA PRI KRISTALIZACIJI NATRIJEVEGA KLORATA
ID Jamšek, Sara (Author), ID Podgornik, Aleš (Mentor) More about this mentor... This link opens in a new window

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Abstract
Enantiomerno čistost je mogoče doseči z različnimi tehnikami, ena izmed njih je uporaba Viedma zorenja, ki ni ravno nov vendar sorazmerno sodoben postopek in se je bolj razvil šele v zadnjih desetletjih. V diplomskem delu sem poskušala pokazati, če lahko zgolj s pomočjo mehanskega trenja v raztopini povzročimo, da prvotno racemna zmes natrijevega klorata postane enantiomerno čista. Rezultati so pokazali, da se racemni sistem lahko postopoma preoblikuje v enokiralno fazo, pri čemer je bila smer kiralnosti naključna. Ugotovila sem, da imajo na dinamiko procesa pomemben vpliv intenzivnost mešanja, čistost vzorca ter preprečevanje možnosti izhlapevanja. Čeprav so bili doseženi primeri enantiomerne čistosti, rezultati niso bili dovolj ponovljivi za zanesljivo potrditev metode v uporabljenih laboratorijskih pogojih. Kljub temu raziskava potrjuje potencial tehnike Viedma zorenja kot učinkovit pristop k doseganju enantiomernih čistih kristalov, ki bi lahko našel širšo uporabo pri raziskavah kiralnosti in razvoju novih materialov.

Language:Slovenian
Keywords:Enantiomer, natrijev klorat, enantiomerna čistost, Viedma zorenje
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Year:2025
PID:20.500.12556/RUL-176374 This link opens in a new window
COBISS.SI-ID:262761475 This link opens in a new window
Publication date in RUL:28.11.2025
Views:77
Downloads:12
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Secondary language

Language:English
Title:USE OF VIEDMA RIPENING IN THE CRYSTALLIZATION OF SODIUM CHLORATE
Abstract:
Enantiomeric purity can be achieved by various techniques, one of which is the use of Viedma ripening, a relatively modern method that has been more extensively developed only in the last few decades. In this thesis, I aimed to demonstrate whether mechanical attrition in solution alone can induce the transformation of an initially racemic mixture of sodium chlorate into an enantiomerically pure phase. The results showed that the racemic system can gradually evolve into a single chiral phase, with the direction of chirality being random. I found that the dynamics of the process is strongly influenced by mixing intensity, sample purity, and the prevention of evaporation. Although cases of enantiomeric purity were observed, the outcomes were not sufficiently reproducible to reliably confirm the method under the laboratory conditions employed. Nevertheless, the study highlights the potential of Viedma ripening as an effective approach to obtaining enantiomerically pure crystals, with possible broader applications in chirality research and the development of new materials.

Keywords:Enantiomer, sodium chlorate, enantiomeric purity, Viedma ripening

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