| Autor: |
Nadia, Yousef, El-Sousy, Khaled M., EL-Aila, Hisham J. Y., Mhesen, Fatheya |
| Zdroj: |
Tenside Surfactants Detergents; December 2005, Vol. 42 Issue: 6 p368-372, 5p |
| Abstrakt: |
Kinetic study for the heterogeneous decomposition of hydrogen peroxide over different non-soluble metal oxides (CuO, Fe2O3and PbO2) was taken as a model reaction, mainly in normal micellar, inverse micellar microemulsion of sodium dodecyl sulfate (SDS). Other micellar phases of different surfactants [sodium dioctylsulfosuccinate (AOT), cetyle trimethyl ammonium bromide (CTAB) and triton X100] have been studied. Different organic solvents have been investigated. A promotional effect was generally observed. The reaction rate determining step was estimated. Reaction rate constants and thermodynamic parameters (?G*, ?H*and ?S*) were calculated. It was found that the highest promotional influence was observed in the case of (SDS/Fe3O4) in micellar and inverse micellar micro-emulsion media. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
