Elektrische Leitfähigkeiten geschmolzener Salzmischungen aus Erdalkalimetallbromiden und Alkalimetallbromiden

Electrical Conductivity of Molten Alkaline Earth Bromide - Alkali Bromide Salt Mixtures The temperature and concentration dependence of the specific electrical conductivity was measured for binary CaBr₂? MBr(M?Li, K, Rb, Cs) and KBr–(Sr, Ba)Br₂ mixtures. In the systems CaBr₂? (K, Rb, Cs)Br and SrBr₂–KBr minima were found on the isotherms of the specific and molar electrical conductivity at the concentration x ≈0,5.     

Elektrische Leitfähigkeiten geschmolzener Salzmischungen aus Strontiumchlorid und Alkalimetallchloriden

Electrical Conductivity of Molten Strontium Chloride-Alkali Chloride Salt Mixtures The temperature and concentration dependence of the specific electrical conductivity is measured for binary fused mixtures SrCl₂–MeCl (Me = Li, Na, K, Rb, Cs). Minima of the conductivity are found at the concentration x · 0.5 in the systems SrCl₂–(KCl, RbCl, CsCl).     

Ein Beitrag zur Struktur geschmolzener Mischungen aus Alkalimetall- und Erdalkalimetallhalogeniden,dargestellt an ihren thermodynamischen Eigenschaften

Thermodynamics and Structure of Molten Mixtures Alkali Halide-Alkaline Earth Halide Thermodynamic quantities a_i, f_i, G^E, and S^E were calculated on the basis of vapour pressures of molten mixtures of the type alkali halide-alkaline earth halide. Negative deviations from ideality were found in all systems. The influence of cations or anions on the properties of mixtures is discussed. There is a good correlation between G^E and the change of polarization energy δE_p. Strong ionic interactions were found in molten mixtures, especially in the system RbBr—CaBr₂. The existence of stable complex ions in melts could not be shown by Raman spectroscopy.     

Massenspektrometrische Untersuchungen binärer Mischungen aus Alkalimetall- und Erdalkalimetallhalogeniden

Mass Spectrometrical Investigations of Binary Mixtures Alkali Halide – Alkaline Earth Halide The vapor composition of some binary mixtures alkali halide – alkaline earth halide was investigated by high-temperature mass spectrometry. Concentrations of all molecules in gas phase in dependence on the molar composition of liquid mixture were studied. In the vapors over all mixtures exist gaseous heterocomplexes. With increasing radius of the anion a tendency of decreasing stabilities of 1:1 heterocomplexes is stated. The absolute content of gaseous complexes is a function of the ratio of the vapor pressures of the pure components of mixtures. Calculated formation enthalpies fo various stoichiometric heterocomplexes are given.     

Mischungen aus Wasserstoff und Methan

Ohne Zusammenfassung     

Untersuchung von Mischungen aus Portlandcement und Schlackenmehl

Ohne Zusammenfassung     

Flammsichere Mischungen aus Wolle und Baumwolle sowie aus Wolle, Baumwolle und Polyester-Fasern

Ohne Zusammenfassung     

Zur Analyse von Mischungen aus schwerem und leichtem Wasser

Ohne Zusammenfassung     

Extraktion von Lanthaniden mit Mischungen aus Thenoyl-trifluoraceton und Pyridinbasen

The extraction of some lanthanides from the aqueous phase of ionic strength μ=0.05 by mixtures of thenoyl-trifluoroacetone and pyridine bases such as 3- and 4-methyl-pyridine, 2,6-dimethyl-pyridine, 2,4,6-trimethyl-pyridine and piperidine in CCl₄ has been investigated. The synergic effect observed is explained in terms of the formation of mixed tetra-β-diketonate complexes of the typeLnX ₄CH.     

Mischungen aus Toluol-2,4-diisocyanat und Toluol-2,6-diisocyanat

Ohne Zusammenfassung     

Chemie der Seltenen Erden in geschmolzenen Alkalihalogeniden. XI. Spezifische elektrische Leitfähigkeiten und Aktivierungsenergien von Lanthaniden(III)-jodid–Alkalijodid-Schmelzen

Specific electrical conductivities and activation energies of the molten binary systems RJ₃–MeJ (R = La, Nd, Gd, Dy; Me = Na; K, Cs) have been investigated. In the mixtures with Me = K, Cs there are clear indications to species like RJ, RJ or R₂J.     

Extraktion von Lanthaniden mit Mischungen aus Thenoyl-trifluoraceton und 2-Methylpyridin

The extraction of some lanthanides from an aqueous phase with ionic strength of μ=0.05 by a mixture of thenoyl-trifluoroacetone (HTTA) and 2-methylpyridine (α-picoline) in CCl₄ has been investigated. The possibility has been shown for the formation of mixed tetra-β-diketonate complexes and no difference has been observed in the behaviour of the lanthanides of the two sub-groups.