J 1999

The Electrodeless Discharge Lamp: A Prospective Tool for Photochemistry

KLÁN, Petr, Jaromír LITERÁK and Milan HÁJEK

Basic information

Original name

The Electrodeless Discharge Lamp: A Prospective Tool for Photochemistry

Authors

KLÁN, Petr (203 Czech Republic, guarantor), Jaromír LITERÁK (203 Czech Republic) and Milan HÁJEK

Edition

Journal of Photochemistry and Photobiology A: Chemistry, Amsterdam, The Netherlands, Elsevier Science, 1999, 1010-6030

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10401 Organic chemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.034

RIV identification code

RIV/00216224:14310/99:00001184

Organization unit

Faculty of Science

UT WoS

000083774300019

Keywords (in Czech)

Fotochemie

Keywords in English

Photochemistry
Změněno: 7/4/2010 18:29, Mgr. Jaromír Literák, Ph.D.

Abstract

V originále

A simple photochemical reactor has been developed and tested for photochemical reactions. It consisted of an electrodeless discharge lamp (MWL) placed into the reactor vessel of a commercial microwave oven. The microwave (MW) field generated ultraviolet irradiation by the lamp at the same time as it interacted with a studied sample. This technique brings a unique possibility to study the simultaneous effect of both UV/VIS and MW irradiations on photochemical reactions. The use of MWL in a MW reactor has been studied in terms of (1) an operating MW power and temperature influence on the lamp, (2) solvent polarity influence, (3) MWL heating capabilities, and (4) dependence of the photoreaction efficiency on the MW power output. It was found that the lamp produced enough heat to quickly warm up any liquid to boil even in case of 'transparent' liquids in the MW field. An efficiency of light-induced photofragmentation reaction of valerophenone (Type II reaction) was investigated.

In Czech

A simple photochemical reactor has been developed and tested for photochemical reactions. It consisted of an electrodeless discharge lamp (MWL) placed into the reactor vessel of a commercial microwave oven. The microwave (MW) field generated ultraviolet irradiation by the lamp at the same time as it interacted with a studied sample. This technique brings a unique possibility to study the simultaneous effect of both UV/VIS and MW irradiations on photochemical reactions. The use of MWL in a MW reactor has been studied in terms of (1) an operating MW power and temperature influence on the lamp, (2) solvent polarity influence, (3) MWL heating capabilities, and (4) dependence of the photoreaction efficiency on the MW power output. It was found that the lamp produced enough heat to quickly warm up any liquid to boil even in case of 'transparent' liquids in the MW field. An efficiency of light-induced photofragmentation reaction of valerophenone (Type II reaction) was investigated.

Links

MSM 143100011, plan (intention)
Name: Struktura a vazebné poměry, vlastnosti a analýza syntetických a přírodních molekulových ansamblů
Investor: Ministry of Education, Youth and Sports of the CR, Structure and character of bonding, properties and analysis of synthetic and natural molecular ensembles