MÜLLER, Pavel, Petr KLÁN and Vladimír CÍRKVA. The Electrodeless Discharge Lamp: A Prospective Tool for Photochemistry. Part 4: Temperature- and Envelope Material-Dependent Emission Characteristics. Journal of Photochemistry and Photobiology A: Chemistry. Amsterdam, The Netherlands: Elsevier Science, 2003, vol. 158, No 1, p. 1-5. ISSN 1010-6030.
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Basic information
Original name The Electrodeless Discharge Lamp: A Prospective Tool for Photochemistry. Part 4: Temperature- and Envelope Material-Dependent Emission Characteristics
Authors MÜLLER, Pavel (203 Czech Republic, belonging to the institution), Petr KLÁN (203 Czech Republic, guarantor, belonging to the institution) and Vladimír CÍRKVA (203 Czech Republic).
Edition Journal of Photochemistry and Photobiology A: Chemistry, Amsterdam, The Netherlands, Elsevier Science, 2003, 1010-6030.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10401 Organic chemistry
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 1.693
RIV identification code RIV/00216224:14310/03:00007991
Organization unit Faculty of Science
Keywords in English Electrodeless Discharge Lamp; photochemistry; microwave
Tags Electrodeless Discharge Lamp, microwave, Photochemistry
Tags International impact
Changed by Changed by: Mgr. Pavel Müller, učo 42217. Changed: 25/11/2011 14:28.
Abstract
This work extends our previous research on an original photochemical reactor - the electrodeless discharge lamp (EDL) inside a reaction mixture that generates ultraviolet radiation in the microwave (MW) field. This arrangement was found to be a straightforward solution for homogeneous as well as heterogeneous photochemical experiments that need to be carried out at higher temperatures. Here we report the emission characteristics (250 - 600 nm) of EDL as a function of temperature, MW output power of the reactor, EDL envelope material, and properties of solvents used in photochemical reactions. Relative intensities of the individual emission peaks were found to be largely dependent on temperature (in the region of 35 to 174 oC): the short wavelength bands (particularly the 254-nm peak) were suppressed with increasing temperature. Solvents absorbing MW significantly reduced the EDL emission intensity. It is concluded that the right choice of EDL envelope material and reaction conditions is essential for an efficient course of a photochemical process in this experimental arrangement.
Links
GA203/02/0879, research and development projectName: Vliv mikrovlnného záření na fotochemické reakce
Investor: Czech Science Foundation, Microwave Irradiation Effect on Photochemical Reactions
MSM 143100005, plan (intention)Name: Strukturně-funkční vztahy biomolekul a jejich role v metabolismu
Investor: Ministry of Education, Youth and Sports of the CR, Biomolecular Structure-function Relationships and their role in the Metabolism
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