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Determination of the active phase structure in CuO/γ-Al2O3catalysts by TPR kinetic model discrimination

100%
Kuśtrowski P., Białas A., Surman J., Dudek B.
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2010
|
vol. 65
68-78
EN
The results of temperature-programmed reduction with hydrogen of alumina supported copper oxide catalysts were used to find the best model describing the kinetics of Cu ions' reduction. On the basis of the rate determining step of this reaction the structure of copper oxide was revealed. This kinetic approach was compared with BET and UV-vis-DRS results. The catalytic activity of various copper oxide forms was tested in toluene combustion.
2
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Thermal stability and pollutant adsorption efficiency of nanocomposites consisted of clay and polymeric quaternary ammonium salts

76%
Natkański P., Kuśtrowski P., Kochanowski A., Białas A., Piwowarska Z., Michalik M.
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2011
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vol. 66
47-59
EN
Polymer/layered silicate nanocomposites based on polymeric quaternary ammonium salts (ionenes) intercalated into the interlayer galleries of montmorillonite were synthesized. Zeta potential measurements were conducted to determine the amount of ionenes required to neutralize the negative charge of clay. The composition and structure of the obtained nanocomposites were examined by elemental analysis, ATR-FTIR and XRD. High dye sorption capacity was observed for the composite containing ionene 6,2.
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