- FeOOH and derived phases: Efficient heterogeneous catalysts for clofibric acid degradation by advanced oxidation processes (AOPs)
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In this study the degradation of an aqueous solution of clofibric acid was investigated during catalytic ozonation and Fenton-like process with FeOOH - derived catalysts. From the different calcination temperatures tested, it has been observed that the most active catalyst is the commercial FeOOH calcined at 200°C, when maghemite and hematite are the predominant phases obtained. The best result, at room temperature, for CFA mineralization was observed over 0.5 wt% Pd on FeOOH (calcined at 200°C) among all tested catalysts, achieving 68% and 81% mineralization degree, in 2 h and 6 h, respectively, in catalytic ozonation and 66% and 71% of mineralization degree within 2 h and 6 h, respectively for Fenton process. The efficiency of the Fenton-like process is enhanced at higher temperature (40-60°C), reaching a mineralization degree up to 82% in 6 h. Furthermore, Pd impregnation on FeOOH increased the catalyst stability.
- Sable, Shailesh S.,Ghute, Pallavi P.,álvarez, Pedro,Beltrán, Fernando J.,Medina, Francesc,Contreras, Sandra
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- The pharmacokinetics of antilipemic agents. 5. Is 2-(4-hydroxyphenoxy)-2-methylpropionic acid a metabolite of the antilipemic ciprofibrate?
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After oral administration of Ciprofibrate (1) to volunteers (n = 5) only its glucuronide, but no 1 and no 2-(4-Hydroxyphenoxy)-2-methyl-propionic acid (3) could be detected in the fresh urine. Its formation from 1 seems to be impossible on the basis of es
- Oelschlaeger,Rothley,Hellwich,Schmidt
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p. 337 - 342
(2007/10/02)
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