Effect Potassium

CO hydrogenation, 32 328-349, 408-410 coordination numbers, 35 238 elemental composition, dispersion, and catalytie properties, 39 243-244 Fischer-Tropsch reaetion, potassium effect, 36 36... 

Potassium Effects on the Deactivation by Carbon of Ruthenium Catalysts... 

POTASSIUM EFFECTS ON THE DEACTIVA nON BY CARBON OF RUTHENIUM CATALYSTS... 

Fig, 6. Flame photometer readings for potassium effect of sodium. Curve A, solutions containing 2 mg K/lOO ml (as KCl) -)- Na (as NaCl), as shown by abscissas Curve B, solutions containing no K, but Na, as shown by abscissas. Asterisks denote ordinate and abscissa for curve A only. (By permission of Domingo and Klyne (D2).)... 

Testing of varied doses (0-4 mg/kg) of the compound glycyrrhizin for 12 weeks in women to determine a noobservable-adverse-effect level (NOAEL) for blood pressure and potassium effects suggested that 2 mg/kg glycyrrhizin was the NOAEL. This level is approximately equivalent to 6 g of licorice daily (van Gelderen et al. 2000). 

Figure 9.5 Displacement of hydrated cations from mica surfaces. Alumino-silicate minerals, including mica, adsorb (blue balls) at aluminate sites. The potassium effectively blocks catechol from forming bidentate H-bonds and coordination complexes with the underlying oxide. Tandem placement of charged amines, such as fysine, next to the catechol moieties effectively repels KT, thus allowing the catechol groups to bond to the surface. (Interpreted from ref. 25.)...

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