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.
|