Determination of the parameters of thermodynamic stability constants of bromide complexes of rare earth metals for modeling the optimal regimes of hydrometallurgical extraction

المؤلفون المشاركون

Sergeevich, Fialkovsky Igor
Evgenievna, Litvinova Tatiana
Sergeevich, Lutsky Denis
Alexandrovich, Alexeev Andrey

المصدر

Arab Journal of Basic and Applied Sciences

العدد

المجلد 29، العدد 1 (31 يناير/كانون الثاني 2022)، ص ص. 1-9، 9ص.

الناشر

جامعة البحرين كلية العلوم

تاريخ النشر

2022-01-31

دولة النشر

البحرين

عدد الصفحات

9

التخصصات الرئيسية

العلوم الطبيعية والحياتية (متداخلة التخصصات)

الملخص EN

Determination of the thermodynamic parameters of complex compounds of rare earth metals in aqueous solutions is of considerable interest for understanding the hydrometallurgical processes associated with the extraction and separation of yttrium and lanthanides from solutions of complex multicomponent composition.

The composition of these solutions, as a rule, includes the following anions: SO4 2-, CO32-, PO43-, F-, which form strong complexes of the inner-sphere type, and anions, which form weak outer-sphere complexes, which primarily include complexes of the metal with halogens Cl-, Br- , I-.

By the method of direct potentiometry with the use of a bromide-selective electrode while maintaining the ionic strength constant in the medium of sodium perchlorate, the stability constants (lgK) of the complexes of bromine with cerium, neodymium and samarium at the first stage were determined, the numerical values of which were 0,346; 0,257; 0,387, respectively.

Based on the results obtained, the Gibbs energies of formation for the complexes under consideration are calculated.

A method is proposed for extrapolating literature or experimental data, which makes it possible to calculate the values of thermodynamic stability constants for the entire series of lanthanides and yttrium.

The fundamental possibility of using this method is shown by the example of calculating thermodynamic parameters for bromide complexes of rareearth metals.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Sergeevich, Fialkovsky Igor& Evgenievna, Litvinova Tatiana& Sergeevich, Lutsky Denis& Alexandrovich, Alexeev Andrey. 2022. Determination of the parameters of thermodynamic stability constants of bromide complexes of rare earth metals for modeling the optimal regimes of hydrometallurgical extraction. Arab Journal of Basic and Applied Sciences،Vol. 29, no. 1, pp.1-9.
https://search.emarefa.net/detail/BIM-1340794

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Sergeevich, Fialkovsky Igor…[et al.]. Determination of the parameters of thermodynamic stability constants of bromide complexes of rare earth metals for modeling the optimal regimes of hydrometallurgical extraction. Arab Journal of Basic and Applied Sciences Vol. 29, no. 1 (2022), pp.1-9.
https://search.emarefa.net/detail/BIM-1340794

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Sergeevich, Fialkovsky Igor& Evgenievna, Litvinova Tatiana& Sergeevich, Lutsky Denis& Alexandrovich, Alexeev Andrey. Determination of the parameters of thermodynamic stability constants of bromide complexes of rare earth metals for modeling the optimal regimes of hydrometallurgical extraction. Arab Journal of Basic and Applied Sciences. 2022. Vol. 29, no. 1, pp.1-9.
https://search.emarefa.net/detail/BIM-1340794

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references : p. 8-9

رقم السجل

BIM-1340794