The electrodeless discharge lamp: a prospective tool for photochemistry
| Autor: | Jaromír Literák, Petr Klán |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Norrish reaction
Gas-discharge lamp Valerophenone 010405 organic chemistry Fries rearrangement General Chemical Engineering Microwave oven Photodissociation General Physics and Astronomy General Chemistry 010402 general chemistry Photochemistry 7. Clean energy 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Chlorobenzene Electrodeless lamp |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 137:29-35 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/s1010-6030(00)00335-x |
| Popis: | We have previously reported results from the study of an original photochemical reactor consisting of an electrodeless discharge lamp (MWL) placed into the reactor vessel of a microwave oven [P. Klan, J. Literak, M. Hajek, J. Photochem. Photobiol. A: Chemistry 128 (1999) 145]. The microwave field generates ultraviolet irradiation in the lamp at the same time as it interacts with the studied sample, which is therefore affected by a simultaneous UV/VIS and MW irradiation. Here, five different common photoreactions have been investigated in the reactor: Norrish type II reaction of valerophenone and its p-methyl derivative, photo-Fries reaction, photoreduction of acetophenone, photolysis of a phenacyl ester, and a radical nucleophilic substitution of chlorobenzene in methanol. The reaction conversions and product distributions have been studied in terms of the MWL quality and the scale of the experiment. In addition, MW experiments were compared to those using a conventional UV lamp. The electrodeless lamp is presented as a very simple, economic, and efficient tool for photochemistry. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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