Thermodynamics of aqueous aluminate ion: standard partial molar heat capacities and volumes of tetrahydroxyaluminate(1-)(aq) from 10 to 55.degree.C

Heat capacities of aqueous sodium hydroxide/aluminate mixtures and prediction of the solubility constant of boehmite up to 300°C

“…On the other hand, Figure 5 shows that there is a broad consistency between the present data at 10 MPa and the earlier investigations at low temperatures and atmospheric pressure (Hovey et al, 1988;Magalhães et al, 2002), where the compressibility of aqueous electrolyte solutions is typically small.…”

“…(Hovey et al, 1988;Magalhães et al, 2002). Hemingway et al (1991) b Verdes et al (1992) c Takahashi et al (1973) d e f Wesolowski (1992) g Hovey et al (1988) Hovey et al, 1988;, Magalhães et al, 2002). Values for C pφ (NaOH, T) included for comparison (dotted lines).…”

“…Since experimental r C p º(T) functions for reactions (5) and (6) Hovey et al (1988) in a fit of gibbsite solubility data to an empirical Kº s4 (T) function but concluded that the latter was not very sensitive to changes in r C p º in the rather small temperature interval covered.…”

“…In the fit of ion C p º(T) to Eq. (12), values measured at low temperatures and atmospheric pressure (Hovey et al, 1988;Magalhães et al, 2002) were combined with the present data given by Eq. (10).…”

Calorimetric study of the digestion of gibbsite, Al(OH)3(cr), and thermodynamics of aqueous aluminate ion, Al(OH)4−(aq)

“…Because the reaction, as represented concisely by equation [ 1 ], is electrically symmetrical, the initial molality of NaOH is equal to the final molal ionic strength of the solution as listed in Table 1.…”