Hydroxides of Lanthanides

Reference [1597] reports lEPs of lanthanide hydroxides at pH 5.5-1.5 without experimental details or literature references. 

Only value, data points not reported. The same IEP is reported in Ref. [2226] for a precipitate (termed hydroxide) obtained from LaCl3 and NaOH. 

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This method has been realized for synthesis of perovskite solids. Precursor compoimds with anions as oxalates, acetates, cyanides, nitrates, hydroxides have been employed as precursors for the perovskite synthesis. Examples are LaCoOs from LaCo(CN)6.5H20 and LaNiOs and NdNiOs from tri hydroxide of lanthanide in both examples can be a substitution of cations (lanthanides or transition elements), LnFeO 3, (Ln = Er, Sm, Nd). Sometimes in this method, it is necessaiy to find a suitable precursor compound for the synthesis of the desired composition because it is limited by the stoichiometric ratio of cations in the preciu or and in the final oxide. [32, 33, 44]... 

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