来源：ACS PublicationsThe escalating global demand for rare earth elements (REE) has highlighted the potential of anthropogenic waste streams as secondary resources. This study characterizes the distribution and speciation of REE in Korean municipal solid waste incineration (MSWI) bottom ash (BA) and fly ash (FA). The ashes were subjected to particle size fractionation and magnetic separation to examine REE distribution across different particle sizes and magnetic fractions. In addition, raw BA and FA samples were analyzed using sequential extraction to assess REE speciation and leachability. Ele...
Release time:
2026
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07
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10
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来源：ACS PublicationsThe nature of magnetic phase transitions, whether first-order (FOMT) or second-order (SOMT), fundamentally impacts material properties. Doping in alloys can alter this nature, but the underlying mechanism remains poorly understood. Here, combining first-principles calculations with Landau–Ginzburg expansion, we investigated the electronic origin of the evolution in the nature of phase transitions in rare-earth RE2In alloys. Using Yb-doped Eu2In as a test case, we identified that such evolution is governed by the hybridization near the Fermi level between 5p states of In and ...
Release time:
2026
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07
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09
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来源：ACS PublicationsA series of NaRE(CO3)2 compounds (RE = Ce–Lu, Y, Sc) was synthesized under high-pressure and high-temperature and characterized by single-crystal X-ray diffraction and Raman spectroscopy. Combining these data with previously reported results for NaLa(CO3)2 reveals three distinct structure types dictated by the RE3+ species: an orthorhombic phase (Pmc21) for larger REs (La–Nd), a monoclinic phase (P21/c) for smaller ones (Tb–Lu, Y), and a trigonal dolomite-type (CaMg(CO3)2, R3̅) uniquely for Sc. Intermediate rare earths (Sm–Gd) failed to crystallize into NaRE(CO3)2 under our ...
Release time:
2026
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07
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08
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来源：ACS PublicationsIn recent years, there has been intensive interest in synthesizing and characterizing rare earth inverse-sandwich arene complexes due to their intriguing structural and electronic properties, and they can be exploited as low-valent synthons similar to divalent rare earth compounds. Herein, we use two room-temperature stable, previously reported inverse-sandwich dysprosium arene complexes [(L2Dy)2Ar] (L = [(Me3Si)2NC(NiPr)2], Ar = μ-η:6η6-C6H6 (A) and μ-η:6η6-C7H8 (B)) to react with elemental sulfur, selenium, and tellurium to isolate a series of dysprosium polychalcogenides,...
Release time:
2026
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07
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08
viewed：5