Harmonization of fuel cycles for nuclear energy system with the use of molten-salt technology

Alekseev, P. N.; Ignatiev, V.; Ponomarev-Stepnoi, N. N.; Prusakov, V.N.; Stukalov, V. A.; Субботин, С. А.

doi:10.1016/s0149-1970(97)00027-9

Cited by 6 publications

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“…In addition, their chemical properties and similarities with actinides make them particularly useful as models for the study of speciation of radioactive actinides. Pyrochemical methods for the treatment of irradiated nuclear fuel have stimulated number of research programs and developments [14,15]. Separations would be based on the possibility of modifying the oxidation state of an element by electrolysis or by addition of a chemical agent.…”

Section: Introductionmentioning

confidence: 99%

In situ NMR approach of the local structure of molten materials at high temperature

Bessada

Rollet

Rakhmatullin

et al. 2005

Comptes Rendus. Chimie

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The developments of NMR spectroscopy at high temperature now allow us to study in situ a great number of molten materials. This technique is sensitive to local environment around the nucleus, and gives selective and quantitative information not limited by the disorder existing in liquids. NMR can thus provide a microscopic approach of the structure and dynamics of molten compounds by means of knowledge of different species existing in the melt, the average coordination, or nature of the first neighbors. We present high temperature NMR approach of molten fluoride systems of nuclear interest and description of the local structure around each nucleus, and its evolution with the composition.

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Section: Introductionmentioning

confidence: 99%

In situ NMR approach of the local structure of molten materials at high temperature

Bessada

Rollet

Rakhmatullin

et al. 2005

Comptes Rendus. Chimie

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“…Indeed, the first generation of nuclear reactors has come to an end, and we now face the problems of their demolition and of nuclear waste treatment. Different pyrochemical processes are proposed using molten mixtures of alkali fluorides and chlorides salts, where the radioactive elements are dissolved before electrolytic separation [1,2]. Separation of elements in such processes is based on the possibility of modifying the oxidation state by electrolysis or by addition of a chemical agent.…”

Section: Introductionmentioning

confidence: 99%

Local Structure Analogy of Lanthanide Fluoride Molten Salts

2005

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The objective of this paper is to describe the local structure of lanthanide fluoride melts of nuclear interest. An experimental approach combining NMR and EXAFS spectroscopy, both sensitive to the microstructure of solid or liquid materials, is presented. These techniques can be used to determine the coordination number, the nature of neighbors, and then to identify the complex formation. NMR and EXAFS spectroscopy have been applied to the molten LaF 3 -LiF and LuF 3 -LiF systems. The influence of melt compositions and temperature was studied.

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Molten Salt Reactors and Thorium Energy

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Harmonization of fuel cycles for nuclear energy system with the use of molten-salt technology

Cited by 6 publications

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In situ NMR approach of the local structure of molten materials at high temperature

In situ NMR approach of the local structure of molten materials at high temperature

Local Structure Analogy of Lanthanide Fluoride Molten Salts

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