Catálise Supramolecular: Envíos recentes
Mostrando ítems 6-10 de 11
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Salting coefficient of triethanolamine in major seawater salts
(Elsevier, 2006-01)Activity coefficient of triethanolamine (TEA) in major seawater salts (NaCl, KCl, CaCl2 and MgCl2) has been determinated using the distribution method. It increases slowly in KCl, remains almost constant in NaCl and decreases ... -
Equilibrium constants of triethanolamine in major seawater salts
(Elsevier, 2006-12)Acid–base equilibrium constants of triethanolamine (TEA) have been determined by potentiometric titrations with a glass electrode, at 25 °C. Ionic strength was kept constant with only one electrolyte (using one of these ... -
The salting coefficient and size of alkylamines in saline media at different temperatures: estimation from Pitzer equations and the mean spherical approximation
(Elsevier, 2001-04)The renewed theoretical interest in the proton transfer associated to the amino group together with the scarcity of acid-base studies of amines in moderate to concentrated saline media focussed our attention on the study ... -
Effect of ionic strength on the formal potential of the glass electrode in various saline media
(Elsevier, 1998-08)We examined the variation with ionic strength (I, adjusted with KCl, KNO3, KBr, NaCl or NaClO4) of the formal potential (Econst) for glass electrodes exhibiting a Nernstian response (i.e. Ecell=Econst−s log [H+]). For this ... -
Solvent Effects versus Concentration Effects in determining Rates of Base-catalysed Keto-enol Tautomerization
(Royal Society of Chemistry, 2005)Solvent effects of homogeneous media (such as solvent-water mixtures) in chemical reactivity may be interpreted as due to solvent polarity and/or molecular structure of solvent molecules. In microheterogeneous media (such ...