A spectrophotometric study of samarium (III) speciation in chloride solutions at elevated temperatures

Add time:08/06/2019    Source:sciencedirect.com

The speciation of samarium (III) in chloride-bearing solutions was investigated spectrophotometrically at temperatures of 100–250 °C and a pressure of 100 bars. The simple hydrated ion, Sm3+, is predominant at ambient temperature, but chloride complexes are the dominant species at elevated temperatures. Cumulative formation constants for samarium chloride species were calculated for the following reactions:Sm3++Cl-=SmCl2+β1Sm3++2Cl-=SmCl2+β2

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