نتایج جستجو برای: trace and rare earth elements
تعداد نتایج: 16915845 فیلتر نتایج به سال:
This article delivers a novel economic analysis of US dependence on China for rare-earth elements and sheds light how Western nations may exploit the limitations limit pricing to break China’s global monopoly in element production refinement. analytical framework, supported by comprehensive literature review, application microeconomic industrial organization concepts, two case-study scenarios, ...
The ophiolitic complex of Sahneh-Harsin is composed of rock units such as gabbro, basalt, diabasic dikes, diorite and plagiogranite. The geochemical studies show that primitive magma has been sub-alkaline tholeiitic Mg-rich and K-poor. These data show enrichment of light rare earth elements (LREE) and depletion of heavy rare earth (HREE). The ratio of NbTa in the basalts is between 16.19 and 18...
BACKGROUND The study on the rare earth (RE)-doped layered double hydroxides (LDHs) has received considerable attention due to their potential applications in catalysts. However, the use of RE-doped LDHs as polymer halogen-free flame retardants was seldom investigated. Furthermore, the effect of rare earth elements on the hydrophobicity of LDHs materials and the compatibility of LDHs/polymer com...
Significant academic research and moderate commercial process innovation on rare-earth element (REE) processing have been underway for decades. The last several years seen exponential growth in due to demand of REE that is threatened by supply risks environmental obstacles. industry appears be at the intersection strong, but conflicting forces, including public political support a Green Revolut...
Rare earth elements (REEs) play indispensable roles in various advanced technologies, from electronics to renewable energy. However, the heavy global REEs supply and environmental impact of traditional mining practices have spurred search for sustainable recovery methods. Polymeric materials emerged as promising candidates due their selective adsorption capabilities, versatility, scalability, r...
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