Experimental study of Pd hydrolysis in aqueous solutions at 25-70° Cстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The hydrolysis of the Pd2+ ion in HClO4 solutions was examined at 25–70°C, and the thermodynamic constants of equilibrium K0(1) and K0(2) were determined for the reactions Pd2+ + H2O = PdOH+ + H+ and Pd2+ + 2H2O = + 2H+, respectively. The values of log K0(1) = –1.66 ± 0.5 (25°C) and –0.65 ± 0.25 (50°C) and log K0(2) = –4.34 ± 0.3 (25°C) and –3.80 ± 0.3 (50°C) were derived using the solubility technique at 0.95 confidence level. The values of log K0(1) = –1.9 ± 0.6 (25°C), –1.0 ± 0.4 (50°C), and –0.5 ± 0.3 (70°C) were obtained by spectrophotometric techniques. The palladium ion is significantly hydrolyzed at elevated temperatures (50–70°C) even in strongly acidic solutions (pH 1–1.5), and its hydrolysis is enhanced with increasing temperature.