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Conditioning of Organic Pigments in Carbon Dioxide
Eliáš, Z. ; Vyňuchal, J. ; Krystyník, Pavel ; Klusoň, Petr
A patent review in area of conditionation of organic pigments in supercritical fluid was presented. The results of conditioning with various polycyclic pigments and azo dyes in supercritical CO2 were discussed. Special attention was paid to unpublished extractional conditioning that can lead to significant removal of residual solvents or contaminants from pigments with lower expenses and shorter time than with utilization of well-estabilished current procedures.
Fulltext:  PDF
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Performance of Continuous Micro Photo Reactor – Comparison with Batch Process
Drhová, Magdalena ; Hejda, S. ; Křišťál, Jiří ; Klusoň, Petr
Utilization of the flow chemistry as well as microreactors belongs to the latest trends in chemical engineering. Continuous microreactors of various kinds can be found in the literature, for example the micromixers, micro packed beds, or micro photo reactors. In order to evaluate the benefits of microtechnology application for the given process, the performance of a particular microreactor needs to be compared with the conventional setup. This contribution presents the performance of a continuous micro photo reactor in comparison with a batch process. Two model reactions were selected: the catalyzed photooxidation of 4-chlorophenol (4-CP) and the singlet oxygen chemical quencher 9,10-dimethylanthracene (DMA) in dimethylformamide. The tests were carried out using advanced opto-chemical apparatus with a well-defined light filter corresponding to the absorption bands of the used photo catalysts.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22012102414080 - PDF
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