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This subject is focused on the development of microwave chemistry (history, description), on the mechanism of microwave heating (polarization vs. conduction), on interaction of the microwaves with materials (absorption, transmission, reflection, scattering), on the behavior of compounds in microwave field (superheating effects, complex dielectric constant, loss angle, penetration depth, hot spots), on application of microwaves on selected chemical reactions (increase of reaction rate, effect on yield and selectivity of reaction), and on the experimental equipment for microwave chemistry (magnetron, measuring of temperature).
Last update: Církva Vladimír (21.06.2018)
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Students will be able to: to understand the effect of microwaves on chemical reactions select suitable reaction for application of microwaves conduct experiments on commercial microwave equipment Last update: Církva Vladimír (21.06.2018)
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It is compulsory to pass written examination test with the result at least 50%, and finally to pass successfuly the oral examination (50 %). Students can complete the exam in Czech or English. Last update: Církva Vladimír (20.08.2018)
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R: de la Hoz A., Loupy A.: Microwaves in Organic Synthesis, Third Edition, 2012 Wiley-VCH Verlag, ISBN: 978-3-527-33116-1. A: Kappe C.O., Stadler A., Dallinger D.: Microwaves in Organic and Medicinal Chemistry, 2012 Wiley-VCH Verlag, ISBN: 978-3-527-33185-7. Last update: Církva Vladimír (20.08.2018)
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1. Introduction and development of microwave chemistry 2. Microwave oven - history, description, danger of microwave radiation 3. Mechanism of microwave heating (polarization vs. conduction) 4. Interaction of the microwaves with materials (absorption, transmission, reflection, scattering) 5. Behavior of compounds in microwave field 1 (superheating effects) 6. Behavior of compounds in microwave field 2 (complex dielectric constant, loss angle) 7. Behavior of compounds in microwave field 3 (penetration depth, hot spots) 8. Application of microwaves on selected chemical reactions 1 (increase of reaction rate) 9. Application of microwaves on selected chemical reactions 2 (effect on yield) 10. Application of microwaves on selected chemical reactions 3 (selective heating) 11. Application of microwaves on selected chemical reactions 4 (uniform heating) 12. Application of microwaves on selected chemical reactions 5 ("green chemistry") 13. Experimental equipment for microwave chemistry (magnetron, measuring of temperature) 14. Microwaves in practice Last update: Církva Vladimír (21.06.2018)
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Materials available at e-learning portal of the subject Monografies for various methods: Microwaves in Organic Synthesis, Third Edition https://onlinelibrary-wiley-com.ezproxy.vscht.cz/doi/book/10.1002/9783527651313 Last update: Církva Vladimír (21.06.2018)
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Physics, Physical Chemistry Last update: Církva Vladimír (21.06.2018)
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Activity | Credits | Hours | ||
Příprava na zkoušku a její absolvování | 0 | 1 | ||
0 / 0 | 1 / 0 |