Avancerad sökning

Visar resultat 1 - 5 av 34 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Tetradentate amide extraction agents for trivalent lanthanides

    Författare :Mikhail S Tyumentsev; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; malonamides; lanthanides; solvent extraction; entropic effect; electrospray ionization – mass spectrometry; single-crystal X-ray diffraction;

    Sammanfattning : Lanthanides are valuable materials. They are used in catalysts, permanent magnets, batteries, optical devices, and in many other products. Lanthanides are mainly supplied by mining industry, which generates large volumes of waste due to relatively low concentrations of these elements in geological deposits. LÄS MER

  3. 2. Development of Polyamide Solvent Extraction Reagents for Trivalent Lanthanides

    Författare :Mikhail S Tyumentsev; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Polyamides; Solvent Extraction; Europium; Rare Earth Elements; Lanthanides; Malonamides;

    Sammanfattning : Rare earth elements (REEs), including lanthanides, are critical materials for many industrial technologies. As a result recycling of end-of-life products containing REEs might be beneficial, as this could partially satisfy the growing demands of industry for these elements. LÄS MER

  4. 3. Investigations of Solvent Systems Based on bis-triazine-bipyridine (BTBP) - class Ligands for the Separation of Actinides from Lanthanides

    Författare :Teodora Retegan Vollmer; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; lanthanides; diluents; BTBP; solvent extraction; side groups; complexes; actinides;

    Sammanfattning : Shortages of fossil fuel and other political movements contributed to the nuclear energy “renaissance”.Nuclear energy, however, is not free of challenges, one of them being nuclear waste management. LÄS MER

  5. 4. Extraction Properties of some Nitrogen-Containing Extractants and Determination of Nitrate Complex Formation for Lanthanides and Selected Actinides Using Solvent Extraction

    Författare :Sofie Andersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; actinides; solvent extraction; separation; lanthanides; nitrate complex formation;

    Sammanfattning : Partitioning and transmutation of spent nuclear fuel will reduce the amount of waste and its radiotoxicity in a long-term perspective. At the same time the energy content of the spent nuclear fuel can be used more efficiently by recycling of uranium and plutonium and by using energy from the transmutation reactor. LÄS MER

  7. 5. Screening Investigations of Novel Nitrogen Donor Ligands

    Författare :Mikael Nilsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; lanthanides; transmutation; actinides; BTBP; solvent extraction; screening; partitioning;

    Sammanfattning : With an increasing global demand for electricity, nuclear power plays an important role. The nuclear power industry is in different stages of development throughout the world. LÄS MER