论文部分内容阅读
Experimental data of hydrolytic polymerization of lanthanide ions in aqueous solutionwere treated by graphic method,computer fitting and pq analysis,species present were ascertained andhydrolysis constants obtained.Ln(OH)~(2+)and Ln_2(OH)_2~(4+)predominated in the species of all hydroly-sis products.When the first and the second hydrolysis constants were plotted against radii and ef-fective nuclear charge of lanthanide ions,the curves obtained conformed with the“three-divisiongroups”rule.Correlation between hydrolysis constants of Ln_2(OH)_2~(4+)and other hydrolysis constantsis linear.Using the above empirical correlations we calculated hydrolysis constants of all lanthanide ionsand obtained satisfactory results which showed good regularity for hydrolysis of lanthanide ions andthus systematized all data of the reaction.
Experimental data of hydrolytic polymerization of lanthanide ions in aqueous solutionwere treated by graphic method, computer fitting and pq analysis, species present were ascertained and hydrolyzed constants obtained.Ln (OH) 2+ and Ln_2 (OH) 2 ~ (4+) predominated in the species of all hydroly-sis products. The first and the second hydrolysis constants were plotted against radii and ef-fective nuclear charge of lanthanide ions, the curves obtained conformed with the “three-division groups” rule. Correlation between hydrolysis constants of Ln_2 (OH) _2 ~ (4+) and other hydrolysis constantsis linear. Using the above empirical correlations we calculated hydrolysis constants of all lanthanide ions and obtained satisfactory results which showed good regularity for hydrolysis of lanthanide ions andthus systematized all data of the reaction.