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Pomen pridobivanja in uporabe nepolarnih topil iz rastlin
ID Pleša, Kaja (Author), ID Kranjc, Krištof (Mentor) More about this mentor... This link opens in a new window

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Abstract
Magistrska naloga je sestavljena iz dveh delov. V prvem delu obravnava zamenjavo klasičnih organskih spojin iz neobnovljivih virov s spojinami rastlinskega izvora pri izvajanju laboratorijskih vaj iz kemije v srednjih šolah. V uvodu so predstavljeni principi zelene kemije in z njo povezana pomembnost uporabe zelenih topil. Eksperimentalno delo je razdeljeno na pet sklopov: ekstrakcija cinamaldehida s parno destilacijo, redukcija cinamaldehida z natrijevim borohidridom z etanolom kot topilom, spremljanje reakcije s tankoplastno kromatografijo z limonenom kot sestavino mobilne faze; oksidacija etanola do ocetne kisline s kalijevim permanganatom; elektrofilna adicija broma in joda na terpene in rastlinska olja; identifikacija bromidnih, kloridnih in jodididnih ionov v vodnih raztopinah soli z uporabo topil iz obnovljivih virov; ugotavljanje topnosti organskih spojin v polarnem (voda) in nepolarnem (limonen) topilu. V drugem delu magistrske naloge so uspešni eksperimenti preoblikovani v navodila za laboratorijske vaje z rešitvami, ki so namenjena vključevanju trajnostne kemije v izobraževanje. Namen vaj je dijakom omogočiti boljše razumevanje kemijskih konceptov ter trajnostnega razvoja preko uporabe rastlinskih virov, kot so olja in terpeni.

Language:Slovenian
Keywords:rastlinska topila, topnost, ekstrakcija, redukcija, oksidacija, elektrofilna adicija
Work type:Master's thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Year:2025
PID:20.500.12556/RUL-167113 This link opens in a new window
COBISS.SI-ID:226038275 This link opens in a new window
Publication date in RUL:10.02.2025
Views:632
Downloads:1075
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Secondary language

Language:English
Title:Importance of extracting and using non-polar solvents from plants
Abstract:
The master's thesis consists of two parts. The first part addresses the replacement of traditional organic compounds derived from non-renewable resources with plant-based compounds in chemistry laboratory exercises in secondary schools. The introduction outlines the principles of green chemistry and the importance of using green solvents. The experimental work is divided into five sections: extraction of cinnamaldehyde with steam distillation, reduction of cinnamaldehyde with sodium borohydride with ethanol as a solvent, monitoring the reaction with thin layer chromatography using limonene as a mobile phase component; oxidation of ethanol to acetic acid with potassium permanganate; electrophilic addition of bromine and iodine to terpenes and plant oils; identification of bromide, chloride and iodide ions in aqueous salt solutions using solvents derived from renewable sources; determination of solubility of organic compounds in polar (water) and non-polar (limonene) solvents. In the second part of the work, successful experiments are transformed into guidelines for laboratory exercises with solutions aimed at integrating sustainable chemistry into education. The purpose of these exercises is to provide students with a better understanding of chemical concepts and sustainable development through the use of plant-based resources, such as oils and terpenes.

Keywords:plant solvents, solubility, extraction, reduction, oxidation, electrophilic addition

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